PHP 函数大全

a

函数    说明
abs    绝对值
acos    反余弦
acosh    反双曲余弦
addcslashes    以 C 语言风格使用反斜线转义字符串中的字符
addslashes    使用反斜线引用字符串
apache_child_terminate    在本次请求结束后终止 apache 子进程
apache_getenv    获取 Apache subprocess_env 变量
apache_get_modules    获得已加载的Apache模块列表
apache_get_version    获得Apache版本信息
apache_lookup_uri    对指定的 URI 执行部分请求并返回所有有关信息
apache_note    取得或设置 apache 请求记录
apache_request_headers    获取全部 HTTP 请求头信息
apache_reset_timeout    重置 Apache 写入计时器
apache_response_headers    获得全部 HTTP 响应头信息
apache_setenv    设置 Apache 子进程环境变量
apcu_add    Cache a new variable in the data store
apcu_cache_info    Retrieves cached information from APCu’s data store
apcu_cas    Updates an old value with a new value
apcu_clear_cache    Clears the APCu cache
apcu_dec    Decrease a stored number
apcu_delete    Removes a stored variable from the cache
apcu_entry    Atomically fetch or generate a cache entry
apcu_exists    Checks if entry exists
apcu_fetch    Fetch a stored variable from the cache
apcu_inc    Increase a stored number
apcu_sma_info    Retrieves APCu Shared Memory Allocation information
apcu_store    Cache a variable in the data store
apc_add    缓存一个变量到数据存储
apc_bin_dump    Get a binary dump of the given files and user variables
apc_bin_dumpfile    Output a binary dump of cached files and user variables to a file
apc_bin_load    Load a binary dump into the APC file/user cache
apc_bin_loadfile    Load a binary dump from a file into the APC file/user cache
apc_cache_info    Retrieves cached information from APC’s data store
apc_cas    用新值更新旧值
apc_clear_cache    清除APC缓存
apc_compile_file    Stores a file in the bytecode cache, bypassing all filters.
apc_dec    Decrease a stored number
apc_define_constants    Defines a set of constants for retrieval and mass-definition
apc_delete    从用户缓存中删除某个变量
apc_delete_file    Deletes files from the opcode cache
apc_exists    检查APC中是否存在某个或者某些key
apc_fetch    从缓存中取出存储的变量
apc_inc    递增一个储存的数字
apc_load_constants    Loads a set of constants from the cache
apc_sma_info    Retrieves APC’s Shared Memory Allocation information
apc_store    Cache a variable in the data store
apd_breakpoint    Stops the interpreter and waits on a CR from the socket
apd_callstack    Returns the current call stack as an array
apd_clunk    Throw a warning and a callstack
apd_continue    Restarts the interpreter
apd_croak    Throw an error, a callstack and then exit
apd_dump_function_table    Outputs the current function table
apd_dump_persistent_resources    Return all persistent resources as an array
apd_dump_regular_resources    Return all current regular resources as an array
apd_echo    Echo to the debugging socket
apd_get_active_symbols    Get an array of the current variables names in the local scope
apd_set_pprof_trace    Starts the session debugging
apd_set_session    Changes or sets the current debugging level
apd_set_session_trace    Starts the session debugging
apd_set_session_trace_socket    Starts the remote session debugging
array    新建一个数组
array_change_key_case    返回字符串键名全为小写或大写的数组
array_chunk    将一个数组分割成多个
array_column    返回数组中指定的一列
array_combine    创建一个数组，用一个数组的值作为其键名，另一个数组的值作为其值
array_count_values    统计数组中所有的值出现的次数
array_diff    计算数组的差集
array_diff_assoc    带索引检查计算数组的差集
array_diff_key    使用键名比较计算数组的差集
array_diff_uassoc    用用户提供的回调函数做索引检查来计算数组的差集
array_diff_ukey    用回调函数对键名比较计算数组的差集
array_fill    用给定的值填充数组
array_fill_keys    使用指定的键和值填充数组
array_filter    用回调函数过滤数组中的单元
array_flip    交换数组中的键和值
array_intersect    计算数组的交集
array_intersect_assoc    带索引检查计算数组的交集
array_intersect_key    使用键名比较计算数组的交集
array_intersect_uassoc    带索引检查计算数组的交集，用回调函数比较索引
array_intersect_ukey    用回调函数比较键名来计算数组的交集
array_keys    返回数组中部分的或所有的键名
array_key_exists    检查给定的键名或索引是否存在于数组中
array_map    将回调函数作用到给定数组的单元上
array_merge    合并一个或多个数组
array_merge_recursive    递归地合并一个或多个数组
array_multisort    对多个数组或多维数组进行排序
array_pad    用值将数组填补到指定长度
array_pop    将数组最后一个单元弹出（出栈）
array_product    计算数组中所有值的乘积
array_push    将一个或多个单元压入数组的末尾（入栈）
array_rand    从数组中随机取出一个或多个单元
array_reduce    用回调函数迭代地将数组简化为单一的值
array_replace    使用传递的数组替换第一个数组的元素
array_replace_recursive    使用传递的数组递归替换第一个数组的元素
array_reverse    返回一个单元顺序相反的数组
array_search    在数组中搜索给定的值，如果成功则返回相应的键名
array_shift    将数组开头的单元移出数组
array_slice    从数组中取出一段
array_splice    把数组中的一部分去掉并用其它值取代
array_sum    计算数组中所有值的和
array_udiff    用回调函数比较数据来计算数组的差集
array_udiff_assoc    带索引检查计算数组的差集，用回调函数比较数据
array_udiff_uassoc    带索引检查计算数组的差集，用回调函数比较数据和索引
array_uintersect    计算数组的交集，用回调函数比较数据
array_uintersect_assoc    带索引检查计算数组的交集，用回调函数比较数据
array_uintersect_uassoc    带索引检查计算数组的交集，用回调函数比较数据和索引
array_unique    移除数组中重复的值
array_unshift    在数组开头插入一个或多个单元
array_values    返回数组中所有的值
array_walk    使用用户自定义函数对数组中的每个元素做回调处理
array_walk_recursive    对数组中的每个成员递归地应用用户函数
arsort    对数组进行逆向排序并保持索引关系
asin    反正弦
asinh    反双曲正弦
asort    对数组进行排序并保持索引关系
assert    检查一个断言是否为 FALSE
assert_options    设置/获取断言的各种标志
atan    反正切
atan2    两个参数的反正切

atanh    反双曲正切

b

函数    说明
base64_decode    对使用 MIME base64 编码的数据进行解码
base64_encode    使用 MIME base64 对数据进行编码
basename    返回路径中的文件名部分
base_convert    在任意进制之间转换数字
bbcode_add_element    Adds a bbcode element
bbcode_add_smiley    Adds a smiley to the parser
bbcode_create    Create a BBCode Resource
bbcode_destroy    Close BBCode_container resource
bbcode_parse    Parse a string following a given rule set
bbcode_set_arg_parser    Attach another parser in order to use another rule set for argument parsing
bbcode_set_flags    Set or alter parser options
bcadd    2个任意精度数字的加法计算
bccomp    比较两个任意精度的数字
bcdiv    2个任意精度的数字除法计算
bcmod    对一个任意精度数字取模
bcmul    2个任意精度数字乘法计算
bcompiler_load    从一个 bz 压缩过的文件中读取并创建类
bcompiler_load_exe    从一个 bcompiler exe 文件中读取并创建类
bcompiler_parse_class    读取一个类的字节码并回调一个用户的函数
bcompiler_read    从一个文件句柄中读取并创建类
bcompiler_write_class    写入定义过的类的字节码
bcompiler_write_constant    写入定义过的常量的字节码
bcompiler_write_exe_footer    写入开始位置以及 exe 类型文件的结尾信号
bcompiler_write_file    写入 PHP 源码文件的字节码
bcompiler_write_footer    写入单个字符 \x00 用于标识编译数据的结尾
bcompiler_write_function    以字节码写入定义过的函数
bcompiler_write_functions_from_file    以字节码写入一个文件中定义过的所以函数
bcompiler_write_header    写入 bcompiler 头
bcompiler_write_included_filename    写入一个包含的文件的字节码
bcpow    任意精度数字的成方
bcpowmod    Raise an arbitrary precision number to another, reduced by a specified modulus
bcscale    设置所有bc数学函数的默认小数点保留位数
bcsqrt    任意精度数字的二次方根
bcsub    2个任意精度数字的减法
bin2hex    函数把ASCII字符的字符串转换为十六进制值
bindec    二进制转换为十进制
bindtextdomain    Sets the path for a domain
bind_textdomain_codeset    Specify the character encoding in which the messages from the DOMAIN message catalog will be returned
blenc_encrypt    Encrypt a PHP script with BLENC.
boolval    Get the boolean value of a variable
bson_decode    反序列化一个 BSON 对象为 PHP 数组
bson_encode    序列化一个 PHP 变量为 BSON 字符串
bzclose    关闭一个 bzip2 文件
bzcompress    把一个字符串压缩成 bzip2 编码数据
bzdecompress    解压经 bzip2 编码过的数据
bzerrno    返回一个 bzip2 错误码
bzerror    返回包含 bzip2 错误号和错误字符串的一个 array
bzerrstr    返回一个 bzip2 的错误字符串
bzflush    强制写入所有写缓冲区的数据
bzopen    打开一个经 bzip2 压缩过的文件
bzread    bzip2 文件二进制安全地读取
bzwrite    二进制安全地写入 bzip2 文件

c
函数    说明
cairo_create    Returns a new CairoContext object on the requested surface.
cairo_font_face_get_type    Description
cairo_font_options_create    Description
cairo_font_options_equal    Description
cairo_font_options_get_antialias    Description
cairo_font_options_get_hint_metrics    Description
cairo_font_options_get_hint_style    Description
cairo_font_options_get_subpixel_order    Description
cairo_font_options_hash    Description
cairo_font_options_merge    Description
cairo_font_options_set_antialias    Description
cairo_font_options_set_hint_metrics    Description
cairo_font_options_set_hint_style    Description
cairo_font_options_set_subpixel_order    Description
cairo_font_options_status    Description
cairo_format_stride_for_width    Description
cairo_image_surface_create    Description
cairo_image_surface_create_for_data    Description
cairo_image_surface_create_from_png    Description
cairo_image_surface_get_data    Description
cairo_image_surface_get_format    Description
cairo_image_surface_get_height    Description
cairo_image_surface_get_stride    Description
cairo_image_surface_get_width    Description
cairo_matrix_invert    Description
cairo_matrix_multiply    Description
cairo_matrix_rotate    Description
cairo_matrix_transform_distance    Description
cairo_matrix_transform_point    Description
cairo_matrix_translate    Description
cairo_pattern_add_color_stop_rgb    Description
cairo_pattern_add_color_stop_rgba    Description
cairo_pattern_create_for_surface    Description
cairo_pattern_create_linear    Description
cairo_pattern_create_radial    Description
cairo_pattern_create_rgb    Description
cairo_pattern_create_rgba    Description
cairo_pattern_get_color_stop_count    Description
cairo_pattern_get_color_stop_rgba    Description
cairo_pattern_get_extend    Description
cairo_pattern_get_filter    Description
cairo_pattern_get_linear_points    Description
cairo_pattern_get_matrix    Description
cairo_pattern_get_radial_circles    Description
cairo_pattern_get_rgba    Description
cairo_pattern_get_surface    Description
cairo_pattern_get_type    Description
cairo_pattern_set_extend    Description
cairo_pattern_set_filter    Description
cairo_pattern_set_matrix    Description
cairo_pattern_status    Description
cairo_pdf_surface_create    Description
cairo_pdf_surface_set_size    Description
cairo_ps_get_levels    Description
cairo_ps_level_to_string    Description
cairo_ps_surface_create    Description
cairo_ps_surface_dsc_begin_page_setup    Description
cairo_ps_surface_dsc_begin_setup    Description
cairo_ps_surface_dsc_comment    Description
cairo_ps_surface_get_eps    Description
cairo_ps_surface_restrict_to_level    Description
cairo_ps_surface_set_eps    Description
cairo_ps_surface_set_size    Description
cairo_scaled_font_create    Description
cairo_scaled_font_extents    Description
cairo_scaled_font_get_ctm    Description
cairo_scaled_font_get_font_face    Description
cairo_scaled_font_get_font_matrix    Description
cairo_scaled_font_get_font_options    Description
cairo_scaled_font_get_scale_matrix    Description
cairo_scaled_font_get_type    Description
cairo_scaled_font_glyph_extents    Description
cairo_scaled_font_status    Description
cairo_scaled_font_text_extents    Description
cairo_surface_copy_page    Description
cairo_surface_create_similar    Description
cairo_surface_finish    Description
cairo_surface_flush    Description
cairo_surface_get_content    Description
cairo_surface_get_device_offset    Description
cairo_surface_get_font_options    Description
cairo_surface_get_type    Description
cairo_surface_mark_dirty    Description
cairo_surface_mark_dirty_rectangle    Description
cairo_surface_set_device_offset    Description
cairo_surface_set_fallback_resolution    Description
cairo_surface_show_page    Description
cairo_surface_status    Description
cairo_surface_write_to_png    Description
cairo_svg_surface_create    Description
cairo_svg_surface_restrict_to_version    Description
cairo_svg_version_to_string    Description
calculhmac    Obtain a hmac key (needs 2 arguments)
calcul_hmac    Obtain a hmac key (needs 8 arguments)
call_user_func    把第一个参数作为回调函数调用
call_user_func_array    调用回调函数，并把一个数组参数作为回调函数的参数
call_user_method    对特定对象调用用户方法（已废弃）
call_user_method_array    调用一个用户方法，同时传递参数数组（已废弃）
cal_days_in_month    返回某个历法中某年中某月的天数
cal_from_jd    转换Julian Day计数到一个支持的历法。
cal_info    返回选定历法的信息
cal_to_jd    从一个支持的历法转变为Julian Day计数。
ceil    进一法取整
chdb_create    Creates a chdb file
chdir    改变目录
checkdate    验证一个格里高里日期
checkdnsrr    给指定的主机（域名）或者IP地址做DNS通信检查
chgrp    改变文件所属的组
chmod    改变文件模式
chop    rtrim 的别名
chown    改变文件的所有者
chr    返回指定的字符
chroot    改变根目录
chunk_split    将字符串分割成小块
classkit_import    Import new class method definitions from a file
classkit_method_add    Dynamically adds a new method to a given class
classkit_method_copy    Copies a method from class to another
classkit_method_redefine    Dynamically changes the code of the given method
classkit_method_remove    Dynamically removes the given method
classkit_method_rename    Dynamically changes the name of the given method
class_alias    为一个类创建别名
class_exists    检查类是否已定义
class_implements    返回指定的类实现的所有接口。
class_parents    返回指定类的父类。
class_uses    Return the traits used by the given class
clearstatcache    清除文件状态缓存
cli_get_process_title    Returns the current process title
cli_set_process_title    Sets the process title
closedir    关闭目录句柄
closelog    关闭系统日志链接
compact    建立一个数组，包括变量名和它们的值
com_create_guid    Generate a globally unique identifier (GUID)
com_event_sink    Connect events from a COM object to a PHP object
com_get_active_object    Returns a handle to an already running instance of a COM object
com_load_typelib    装载一个 Typelib
com_message_pump    Process COM messages, sleeping for up to timeoutms milliseconds
com_print_typeinfo    Print out a PHP class definition for a dispatchable interface
connection_aborted    检查客户端是否已经断开
connection_status    返回连接的状态位
constant    返回一个常量的值
Constants for PDO_4D    Constants for PDO_4D
Context 参数    Context 参数列表
convert_cyr_string    将字符由一种 Cyrillic 字符转换成另一种
convert_uudecode    解码一个 uuencode 编码的字符串
convert_uuencode    使用 uuencode 编码一个字符串
copy    拷贝文件
cos    余弦
cosh    双曲余弦
count    计算数组中的单元数目或对象中的属性个数
counter_bump    修改简单计数器的当前值。
counter_bump_value    更新计数器资源的当前值。
counter_create    创建一个包含单个数值的计数器。
counter_get    获取简单计数器的当前值。
counter_get_meta    返回计数器资源的部分元信息。
counter_get_named    按名称查询一个已存在的计数器，并作为资源返回。
counter_get_value    获取计数器资源的当前值。
counter_reset    重置简单计数器的当前值。
counter_reset_value    重置计数器资源的当前值。
count_chars    返回字符串所用字符的信息
crack_check    Performs an obscure check with the given password
crack_closedict    Closes an open CrackLib dictionary
crack_getlastmessage    Returns the message from the last obscure check
crack_opendict    Opens a new CrackLib dictionary
crc32    计算一个字符串的 crc32 多项式
create_function    Create an anonymous (lambda-style) function
crypt    单向字符串散列
ctype_alnum    做字母和数字字符检测
ctype_alpha    做纯字符检测
ctype_cntrl    做控制字符检测
ctype_digit    做纯数字检测
ctype_graph    做可打印字符串检测，空格除外
ctype_lower    做小写字符检测
ctype_print    做可打印字符检测
ctype_punct    检测可打印的字符是不是不包含空白、数字和字母
ctype_space    做空白字符检测
ctype_upper    做大写字母检测
ctype_xdigit    检测字符串是否只包含十六进制字符
cubrid_affected_rows    Return the number of rows affected by the last SQL statement
cubrid_bind    Bind variables to a prepared statement as parameters
cubrid_client_encoding    Return the current CUBRID connection charset
cubrid_close    Close CUBRID connection
cubrid_close_prepare    Close the request handle
cubrid_close_request    Close the request handle
cubrid_column_names    Get the column names in result
cubrid_column_types    Get column types in result
cubrid_col_get    Get contents of collection type column using OID
cubrid_col_size    Get the number of elements in collection type column using OID
cubrid_commit    Commit a transaction
cubrid_connect    Open a connection to a CUBRID Server
cubrid_connect_with_url    Establish the environment for connecting to CUBRID server
cubrid_current_oid    Get OID of the current cursor location
cubrid_data_seek    Move the internal row pointer of the CUBRID result
cubrid_db_name    Get db name from results of cubrid_list_dbs
cubrid_disconnect    Close a database connection
cubrid_drop    Delete an instance using OID
cubrid_errno    Return the numerical value of the error message from previous CUBRID operation
cubrid_error    Get the error message
cubrid_error_code    Get error code for the most recent function call
cubrid_error_code_facility    Get the facility code of error
cubrid_error_msg    Get last error message for the most recent function call
cubrid_execute    Execute a prepared SQL statement
cubrid_fetch    Fetch the next row from a result set
cubrid_fetch_array    Fetch a result row as an associative array, a numeric array, or both
cubrid_fetch_assoc    Return the associative array that corresponds to the fetched row
cubrid_fetch_field    Get column information from a result and return as an object
cubrid_fetch_lengths    Return an array with the lengths of the values of each field from the current row
cubrid_fetch_object    Fetche the next row and returns it as an object
cubrid_fetch_row    Return a numerical array with the values of the current row
cubrid_field_flags    Return a string with the flags of the given field offset
cubrid_field_len    Get the maximum length of the specified field
cubrid_field_name    Return the name of the specified field index
cubrid_field_seek    Move the result set cursor to the specified field offset
cubrid_field_table    Return the name of the table of the specified field
cubrid_field_type    Return the type of the column corresponding to the given field offset
cubrid_free_result    Free the memory occupied by the result data
cubrid_get    Get a column using OID
cubrid_get_autocommit    Get auto-commit mode of the connection
cubrid_get_charset    Return the current CUBRID connection charset
cubrid_get_class_name    Get the class name using OID
cubrid_get_client_info    Return the client library version
cubrid_get_db_parameter    Returns the CUBRID database parameters
cubrid_get_query_timeout    Get the query timeout value of the request
cubrid_get_server_info    Return the CUBRID server version
cubrid_insert_id    Return the ID generated for the last updated AUTO_INCREMENT column
cubrid_is_instance    Check whether the instance pointed by OID exists
cubrid_list_dbs    Return an array with the list of all existing CUBRID databases
cubrid_load_from_glo    Read data from a GLO instance and save it in a file
cubrid_lob2_bind    Bind a lob object or a string as a lob object to a prepared statement as parameters.
cubrid_lob2_close    Close LOB object.
cubrid_lob2_export    Export the lob object to a file.
cubrid_lob2_import    Import BLOB/CLOB data from a file.
cubrid_lob2_new    Create a lob object.
cubrid_lob2_read    Read from BLOB/CLOB data.
cubrid_lob2_seek    Move the cursor of a lob object.
cubrid_lob2_seek64    Move the cursor of a lob object.
cubrid_lob2_size    Get a lob object’s size.
cubrid_lob2_size64    Get a lob object’s size.
cubrid_lob2_tell    Tell the cursor position of the LOB object.
cubrid_lob2_tell64    Tell the cursor position of the LOB object.
cubrid_lob2_write    Write to a lob object.
cubrid_lob_close    Close BLOB/CLOB data
cubrid_lob_export    Export BLOB/CLOB data to file
cubrid_lob_get    Get BLOB/CLOB data
cubrid_lob_send    Read BLOB/CLOB data and send straight to browser
cubrid_lob_size    Get BLOB/CLOB data size
cubrid_lock_read    Set a read lock on the given OID
cubrid_lock_write    Set a write lock on the given OID
cubrid_move_cursor    Move the cursor in the result
cubrid_new_glo    Create a glo instance
cubrid_next_result    Get result of next query when executing multiple SQL statements
cubrid_num_cols    Return the number of columns in the result set
cubrid_num_fields    Return the number of columns in the result set
cubrid_num_rows    Get the number of rows in the result set
cubrid_pconnect    Open a persistent connection to a CUBRID server
cubrid_pconnect_with_url    Open a persistent connection to CUBRID server
cubrid_ping    Ping a server connection or reconnect if there is no connection
cubrid_prepare    Prepare a SQL statement for execution
cubrid_put    Update a column using OID
cubrid_query    Send a CUBRID query
cubrid_real_escape_string    Escape special characters in a string for use in an SQL statement
cubrid_result    Return the value of a specific field in a specific row
cubrid_rollback    Roll back a transaction
cubrid_save_to_glo    Save requested file in a GLO instance
cubrid_schema    Get the requested schema information
cubrid_send_glo    Read data from glo and send it to std output
cubrid_seq_drop    Delete an element from sequence type column using OID
cubrid_seq_insert    Insert an element to a sequence type column using OID
cubrid_seq_put    Update the element value of sequence type column using OID
cubrid_set_add    Insert a single element to set type column using OID
cubrid_set_autocommit    Set autocommit mode of the connection
cubrid_set_db_parameter    Sets the CUBRID database parameters
cubrid_set_drop    Delete an element from set type column using OID
cubrid_set_query_timeout    Set the timeout time of query execution
cubrid_unbuffered_query    Perform a query without fetching the results into memory
cubrid_version    Get the CUBRID PHP module’s version
CURL context options    CURL 上下文选项列表
curl_close    关闭一个cURL会话
curl_copy_handle    复制一个cURL句柄和它的所有选项
curl_errno    返回最后一次的错误号
curl_error    返回一个保护当前会话最近一次错误的字符串
curl_escape    使用 URL 编码给定的字符串
curl_exec    执行一个cURL会话
curl_file_create    创建一个 CURLFile 对象
curl_getinfo    获取一个cURL连接资源句柄的信息
curl_init    初始化一个cURL会话
curl_multi_add_handle    向curl批处理会话中添加单独的curl句柄
curl_multi_close    关闭一组cURL句柄
curl_multi_exec    运行当前 cURL 句柄的子连接
curl_multi_getcontent    如果设置了CURLOPT_RETURNTRANSFER，则返回获取的输出的文本流
curl_multi_info_read    获取当前解析的cURL的相关传输信息
curl_multi_init    返回一个新cURL批处理句柄
curl_multi_remove_handle    移除curl批处理句柄资源中的某个句柄资源
curl_multi_select    等待所有cURL批处理中的活动连接
curl_multi_setopt    为 cURL 并行处理设置一个选项
curl_multi_strerror    Return string describing error code
curl_pause    Pause and unpause a connection
curl_reset    Reset all options of a libcurl session handle
curl_setopt    设置一个cURL传输选项
curl_setopt_array    为cURL传输会话批量设置选项
curl_share_close    Close a cURL share handle
curl_share_init    Initialize a cURL share handle
curl_share_setopt    Set an option for a cURL share handle.
curl_strerror    Return string describing the given error code
curl_unescape    解码给定的 URL 编码的字符串
curl_version    获取cURL版本信息
current    返回数组中的当前单元
cyrus_authenticate    Authenticate against a Cyrus IMAP server
cyrus_bind    Bind callbacks to a Cyrus IMAP connection
cyrus_close    Close connection to a Cyrus IMAP server
cyrus_connect    Connect to a Cyrus IMAP server
cyrus_query    Send a query to a Cyrus IMAP server

cyrus_unbind    Unbind …

d
函数    说明
date    格式化一个本地时间／日期
date_default_timezone_get    取得一个脚本中所有日期时间函数所使用的默认时区
date_default_timezone_set    设定用于一个脚本中所有日期时间函数的默认时区
date_parse    Returns associative array with detailed info about given date
date_parse_from_format    Get info about given date formatted according to the specified format
date_sunrise    返回给定的日期与地点的日出时间
date_sunset    返回给定的日期与地点的日落时间
date_sun_info    Returns an array with information about sunset/sunrise and twilight begin/end
db2_autocommit    Returns or sets the AUTOCOMMIT state for a database connection
db2_bind_param    Binds a PHP variable to an SQL statement parameter
db2_client_info    Returns an object with properties that describe the DB2 database client
db2_close    Closes a database connection
db2_columns    Returns a result set listing the columns and associated metadata for a table
db2_column_privileges    Returns a result set listing the columns and associated privileges for a table
db2_commit    Commits a transaction
db2_connect    Returns a connection to a database
db2_conn_error    Returns a string containing the SQLSTATE returned by the last connection attempt
db2_conn_errormsg    Returns the last connection error message and SQLCODE value
db2_cursor_type    Returns the cursor type used by a statement resource
db2_escape_string    Used to escape certain characters
db2_exec    Executes an SQL statement directly
db2_execute    Executes a prepared SQL statement
db2_fetch_array    Returns an array, indexed by column position, representing a row in a result set
db2_fetch_assoc    Returns an array, indexed by column name, representing a row in a result set
db2_fetch_both    Returns an array, indexed by both column name and position, representing a row in a result set
db2_fetch_object    Returns an object with properties representing columns in the fetched row
db2_fetch_row    Sets the result set pointer to the next row or requested row
db2_field_display_size    Returns the maximum number of bytes required to display a column
db2_field_name    Returns the name of the column in the result set
db2_field_num    Returns the position of the named column in a result set
db2_field_precision    Returns the precision of the indicated column in a result set
db2_field_scale    Returns the scale of the indicated column in a result set
db2_field_type    Returns the data type of the indicated column in a result set
db2_field_width    Returns the width of the current value of the indicated column in a result set
db2_foreign_keys    Returns a result set listing the foreign keys for a table
db2_free_result    Frees resources associated with a result set
db2_free_stmt    Frees resources associated with the indicated statement resource
db2_get_option    Retrieves an option value for a statement resource or a connection resource
db2_last_insert_id    Returns the auto generated ID of the last insert query that successfully executed on this connection
db2_lob_read    Gets a user defined size of LOB files with each invocation
db2_next_result    Requests the next result set from a stored procedure
db2_num_fields    Returns the number of fields contained in a result set
db2_num_rows    Returns the number of rows affected by an SQL statement
db2_pclose    Closes a persistent database connection
db2_pconnect    Returns a persistent connection to a database
db2_prepare    Prepares an SQL statement to be executed
db2_primary_keys    Returns a result set listing primary keys for a table
db2_procedures    Returns a result set listing the stored procedures registered in a database
db2_procedure_columns    Returns a result set listing stored procedure parameters
db2_result    Returns a single column from a row in the result set
db2_rollback    Rolls back a transaction
db2_server_info    Returns an object with properties that describe the DB2 database server
db2_set_option    Set options for connection or statement resources
db2_special_columns    Returns a result set listing the unique row identifier columns for a table
db2_statistics    Returns a result set listing the index and statistics for a table
db2_stmt_error    Returns a string containing the SQLSTATE returned by an SQL statement
db2_stmt_errormsg    Returns a string containing the last SQL statement error message
db2_tables    Returns a result set listing the tables and associated metadata in a database
db2_table_privileges    Returns a result set listing the tables and associated privileges in a database
dbase_add_record    Adds a record to a database
dbase_close    Closes a database
dbase_create    Creates a database
dbase_delete_record    Deletes a record from a database
dbase_get_header_info    Gets the header info of a database
dbase_get_record    Gets a record from a database as an indexed array
dbase_get_record_with_names    Gets a record from a database as an associative array
dbase_numfields    Gets the number of fields of a database
dbase_numrecords    Gets the number of records in a database
dbase_open    Opens a database
dbase_pack    Packs a database
dbase_replace_record    Replaces a record in a database
dba_close    Close a DBA database
dba_delete    Delete DBA entry specified by key
dba_exists    Check whether key exists
dba_fetch    Fetch data specified by key
dba_firstkey    Fetch first key
dba_handlers    List all the handlers available
dba_insert    Insert entry
dba_key_split    Splits a key in string representation into array representation
dba_list    List all open database files
dba_nextkey    Fetch next key
dba_open    Open database
dba_optimize    Optimize database
dba_popen    Open database persistently
dba_replace    Replace or insert entry
dba_sync    Synchronize database
dbplus_add    Add a tuple to a relation
dbplus_aql    Perform AQL query
dbplus_chdir    Get/Set database virtual current directory
dbplus_close    Close a relation
dbplus_curr    Get current tuple from relation
dbplus_errcode    Get error string for given errorcode or last error
dbplus_errno    Get error code for last operation
dbplus_find    Set a constraint on a relation
dbplus_first    Get first tuple from relation
dbplus_flush    Flush all changes made on a relation
dbplus_freealllocks    Free all locks held by this client
dbplus_freelock    Release write lock on tuple
dbplus_freerlocks    Free all tuple locks on given relation
dbplus_getlock    Get a write lock on a tuple
dbplus_getunique    Get an id number unique to a relation
dbplus_info    Get information about a relation
dbplus_last    Get last tuple from relation
dbplus_lockrel    Request write lock on relation
dbplus_next    Get next tuple from relation
dbplus_open    Open relation file
dbplus_prev    Get previous tuple from relation
dbplus_rchperm    Change relation permissions
dbplus_rcreate    Creates a new DB++ relation
dbplus_rcrtexact    Creates an exact but empty copy of a relation including indices
dbplus_rcrtlike    Creates an empty copy of a relation with default indices
dbplus_resolve    Resolve host information for relation
dbplus_restorepos    Restore position
dbplus_rkeys    Specify new primary key for a relation
dbplus_ropen    Open relation file local
dbplus_rquery    Perform local (raw) AQL query
dbplus_rrename    Rename a relation
dbplus_rsecindex    Create a new secondary index for a relation
dbplus_runlink    Remove relation from filesystem
dbplus_rzap    Remove all tuples from relation
dbplus_savepos    Save position
dbplus_setindex    Set index
dbplus_setindexbynumber    Set index by number
dbplus_sql    Perform SQL query
dbplus_tcl    Execute TCL code on server side
dbplus_tremove    Remove tuple and return new current tuple
dbplus_undo    Undo
dbplus_undoprepare    Prepare undo
dbplus_unlockrel    Give up write lock on relation
dbplus_unselect    Remove a constraint from relation
dbplus_update    Update specified tuple in relation
dbplus_xlockrel    Request exclusive lock on relation
dbplus_xunlockrel    Free exclusive lock on relation
dbx_close    Close an open connection/database
dbx_compare    Compare two rows for sorting purposes
dbx_connect    Open a connection/database
dbx_error    Report the error message of the latest function call in the module
dbx_escape_string    Escape a string so it can safely be used in an sql-statement
dbx_fetch_row    Fetches rows from a query-result that had the DBX_RESULT_UNBUFFERED flag set
dbx_query    Send a query and fetch all results (if any)
dbx_sort    Sort a result from a dbx_query by a custom sort function
dcgettext    Overrides the domain for a single lookup
dcngettext    Plural version of dcgettext
debug_backtrace    产生一条回溯跟踪(backtrace)
debug_print_backtrace    打印一条回溯。
debug_zval_dump    Dumps a string representation of an internal zend value to output
decbin    十进制转换为二进制
dechex    十进制转换为十六进制
decoct    十进制转换为八进制
define    定义一个常量
defined    检查某个名称的常量是否存在
define_syslog_variables    Initializes all syslog related variables
deg2rad    将角度转换为弧度
delete    参见 unlink 或 unset
dgettext    Override the current domain
die    等同于 exit
dio_close    Closes the file descriptor given by fd
dio_fcntl    Performs a c library fcntl on fd
dio_open    Opens a file (creating it if necessary) at a lower level than the C library input/ouput stream functions allow.
dio_read    Reads bytes from a file descriptor
dio_seek    Seeks to pos on fd from whence
dio_stat    Gets stat information about the file descriptor fd
dio_tcsetattr    Sets terminal attributes and baud rate for a serial port
dio_truncate    Truncates file descriptor fd to offset bytes
dio_write    Writes data to fd with optional truncation at length
dir    返回一个 Directory 类实例
dirname    返回路径中的目录部分
diskfreespace    disk_free_space 的别名
disk_free_space    返回目录中的可用空间
disk_total_space    返回一个目录的磁盘总大小
dl    运行时载入一个 PHP 扩展
dngettext    Plural version of dgettext
dns_check_record    别名 checkdnsrr
dns_get_mx    别名 getmxrr
dns_get_record    获取指定主机的DNS记录
dom_import_simplexml    Gets a DOMElement object from a SimpleXMLElement object

doubleval    floatval 的别名

e
函数    说明
each    返回数组中当前的键／值对并将数组指针向前移动一步
easter_date    得到指定年份的复活节午夜时的Unix时间戳。
easter_days    得到指定年份的3月21日到复活节之间的天数
echo    输出一个或多个字符串
eio_busy    Artificially increase load. Could be useful in tests, benchmarking.
eio_cancel    Cancels a request
eio_chmod    Change file/direcrory permissions.
eio_chown    Change file/direcrory permissions.
eio_close    Close file
eio_custom    Execute custom request like any other eio_* call.
eio_dup2    Duplicate a file descriptor
eio_event_loop    Polls libeio until all requests proceeded
eio_fallocate    Allows the caller to directly manipulate the allocated disk space for a file
eio_fchmod    Change file permissions.
eio_fchown    Change file ownership
eio_fdatasync    Synchronize a file’s in-core state with storage device.
eio_fstat    Get file status
eio_fstatvfs    Get file system statistics
eio_fsync    Synchronize a file’s in-core state with storage device
eio_ftruncate    Truncate a file
eio_futime    Change file last access and modification times
eio_get_event_stream    Get stream representing a variable used in internal communications with libeio.
eio_get_last_error    Returns string describing the last error associated with a request resource
eio_grp    Createsa request group.
eio_grp_add    Adds a request to the request group.
eio_grp_cancel    Cancels a request group
eio_grp_limit    Set group limit
eio_init    (Re-)initialize Eio
eio_link    Create a hardlink for file
eio_lstat    Get file status
eio_mkdir    Create directory
eio_mknod    Create a special or ordinary file.
eio_nop    Does nothing, except go through the whole request cycle.
eio_npending    Returns number of finished, but unhandled requests
eio_nready    Returns number of not-yet handled requests
eio_nreqs    Returns number of requests to be processed
eio_nthreads    Returns number of threads currently in use
eio_open    Opens a file
eio_poll    Can be to be called whenever there are pending requests that need finishing.
eio_read    Read from a file descriptor at given offset.
eio_readahead    Perform file readahead into page cache
eio_readdir    Reads through a whole directory
eio_readlink    Read value of a symbolic link.
eio_realpath    Get the canonicalized absolute pathname.
eio_rename    Change the name or location of a file.
eio_rmdir    Remove a directory
eio_seek    Repositions the offset of the open file associated with the fd argument to the argument offset according to the directive whence
eio_sendfile    Transfer data between file descriptors
eio_set_max_idle    Set maximum number of idle threads.
eio_set_max_parallel    Set maximum parallel threads
eio_set_max_poll_reqs    Set maximum number of requests processed in a poll.
eio_set_max_poll_time    Set maximum poll time
eio_set_min_parallel    Set minimum parallel thread number
eio_stat    Get file status
eio_statvfs    Get file system statistics
eio_symlink    Create a symbolic link
eio_sync    Commit buffer cache to disk
eio_syncfs    Calls Linux’ syncfs syscall, if available
eio_sync_file_range    Sync a file segment with disk
eio_truncate    Truncate a file
eio_unlink    Delete a name and possibly the file it refers to
eio_utime    Change file last access and modification times.
eio_write    Write to file
empty    检查一个变量是否为空
enchant_broker_describe    Enumerates the Enchant providers
enchant_broker_dict_exists    Whether a dictionary exists or not. Using non-empty tag
enchant_broker_free    Free the broker resource and its dictionnaries
enchant_broker_free_dict    Free a dictionary resource
enchant_broker_get_dict_path    Get the directory path for a given backend
enchant_broker_get_error    Returns the last error of the broker
enchant_broker_init    create a new broker object capable of requesting
enchant_broker_list_dicts    Returns a list of available dictionaries
enchant_broker_request_dict    create a new dictionary using a tag
enchant_broker_request_pwl_dict    creates a dictionary using a PWL file
enchant_broker_set_dict_path    Set the directory path for a given backend
enchant_broker_set_ordering    Declares a preference of dictionaries to use for the language
enchant_dict_add_to_personal    add a word to personal word list
enchant_dict_add_to_session    add ‘word’ to this spell-checking session
enchant_dict_check    Check whether a word is correctly spelled or not
enchant_dict_describe    Describes an individual dictionary
enchant_dict_get_error    Returns the last error of the current spelling-session
enchant_dict_is_in_session    whether or not ‘word’ exists in this spelling-session
enchant_dict_quick_check    Check the word is correctly spelled and provide suggestions
enchant_dict_store_replacement    Add a correction for a word
enchant_dict_suggest    Will return a list of values if any of those pre-conditions are not met
end    将数组的内部指针指向最后一个单元
ereg    正则表达式匹配
eregi    不区分大小写的正则表达式匹配
eregi_replace    不区分大小写的正则表达式替换
ereg_replace    正则表达式替换
error_clear_last    Clear the most recent error
error_get_last    获取最后发生的错误
error_log    发送错误信息到某个地方
error_reporting    设置应该报告何种 PHP 错误
escapeshellarg    把字符串转码为可以在 shell 命令里使用的参数
escapeshellcmd    shell 元字符转义
eval    把字符串作为PHP代码执行
event_base_free    Destroy event base
event_base_loop    Handle events
event_base_loopbreak    Abort event loop
event_base_loopexit    Exit loop after a time
event_base_new    Create and initialize new event base
event_base_priority_init    Set the number of event priority levels
event_base_reinit    Reinitialize the event base after a fork
event_base_set    Associate event base with an event
event_buffer_base_set    Associate buffered event with an event base
event_buffer_disable    Disable a buffered event
event_buffer_enable    Enable a buffered event
event_buffer_fd_set    Change a buffered event file descriptor
event_buffer_free    Destroy buffered event
event_buffer_new    Create new buffered event
event_buffer_priority_set    Assign a priority to a buffered event
event_buffer_read    Read data from a buffered event
event_buffer_set_callback    Set or reset callbacks for a buffered event
event_buffer_timeout_set    Set read and write timeouts for a buffered event
event_buffer_watermark_set    Set the watermarks for read and write events
event_buffer_write    Write data to a buffered event
event_new    Create new event
event_priority_set    Assign a priority to an event.
event_timer_add    别名 event_add
event_timer_del    别名 event_del
event_timer_new    别名 event_new
event_timer_set    Prepare a timer event
Examples with PDO_4D    Examples PDO_4D
exec    执行一个外部程序
exif_imagetype    判断一个图像的类型
exif_read_data    从 JPEG 或 TIFF 文件中读取 EXIF 头信息
exif_tagname    获取指定索引的头名称
exif_thumbnail    取得嵌入在 TIFF 或 JPEG 图像中的缩略图
exit    输出一个消息并且退出当前脚本
exp    计算 e 的指数
expect_expectl    Waits until the output from a process matches one of the patterns, a specified time period has passed, or an EOF is seen
expect_popen    Execute command via Bourne shell, and open the PTY stream to the process
explode    使用一个字符串分割另一个字符串
expm1    返回 exp(number)
extension_loaded    检查一个扩展是否已经加载
extract    从数组中将变量导入到当前的符号表
ezmlm_hash    计算 EZMLM 所需的散列值
f
函数    说明
fam_cancel_monitor    Terminate monitoring
fam_close    Close FAM connection
fam_monitor_collection    Monitor a collection of files in a directory for changes
fam_monitor_directory    Monitor a directory for changes
fam_monitor_file    Monitor a regular file for changes
fam_next_event    Get next pending FAM event
fam_open    Open connection to FAM daemon
fam_pending    Check for pending FAM events
fam_resume_monitor    Resume suspended monitoring
fam_suspend_monitor    Temporarily suspend monitoring
fann_cascadetrain_on_data    Trains on an entire dataset, for a period of time using the Cascade2 training algorithm
fann_cascadetrain_on_file    Trains on an entire dataset read from file, for a period of time using the Cascade2 training algorithm.
fann_clear_scaling_params    Clears scaling parameters
fann_copy    Creates a copy of a fann structure
fann_create_from_file    Constructs a backpropagation neural network from a configuration file
fann_create_shortcut    Creates a standard backpropagation neural network which is not fully connectected and has shortcut connections
fann_create_shortcut_array    Creates a standard backpropagation neural network which is not fully connectected and has shortcut connections
fann_create_sparse    Creates a standard backpropagation neural network, which is not fully connected
fann_create_sparse_array    Creates a standard backpropagation neural network, which is not fully connected using an array of layer sizes
fann_create_standard    Creates a standard fully connected backpropagation neural network
fann_create_standard_array    Creates a standard fully connected backpropagation neural network using an array of layer sizes
fann_create_train    Creates an empty training data struct
fann_create_train_from_callback    Creates the training data struct from a user supplied function
fann_descale_input    Scale data in input vector after get it from ann based on previously calculated parameters
fann_descale_output    Scale data in output vector after get it from ann based on previously calculated parameters
fann_descale_train    Descale input and output data based on previously calculated parameters
fann_destroy    Destroys the entire network and properly freeing all the associated memory
fann_destroy_train    Destructs the training data
fann_duplicate_train_data    Returns an exact copy of a fann train data
fann_get_activation_function    Returns the activation function
fann_get_activation_steepness    Returns the activation steepness for supplied neuron and layer number
fann_get_bias_array    Get the number of bias in each layer in the network
fann_get_bit_fail    The number of fail bits
fann_get_bit_fail_limit    Returns the bit fail limit used during training
fann_get_cascade_activation_functions    Returns the cascade activation functions
fann_get_cascade_activation_functions_count    Returns the number of cascade activation functions
fann_get_cascade_activation_steepnesses    Returns the cascade activation steepnesses
fann_get_cascade_activation_steepnesses_count    The number of activation steepnesses
fann_get_cascade_candidate_change_fraction    Returns the cascade candidate change fraction
fann_get_cascade_candidate_limit    Return the candidate limit
fann_get_cascade_candidate_stagnation_epochs    Returns the number of cascade candidate stagnation epochs
fann_get_cascade_max_cand_epochs    Returns the maximum candidate epochs
fann_get_cascade_max_out_epochs    Returns the maximum out epochs
fann_get_cascade_min_cand_epochs    Returns the minimum candidate epochs
fann_get_cascade_min_out_epochs    Returns the minimum out epochs
fann_get_cascade_num_candidates    Returns the number of candidates used during training
fann_get_cascade_num_candidate_groups    Returns the number of candidate groups
fann_get_cascade_output_change_fraction    Returns the cascade output change fraction
fann_get_cascade_output_stagnation_epochs    Returns the number of cascade output stagnation epochs
fann_get_cascade_weight_multiplier    Returns the weight multiplier
fann_get_connection_array    Get connections in the network
fann_get_connection_rate    Get the connection rate used when the network was created
fann_get_errno    Returns the last error number
fann_get_errstr    Returns the last errstr
fann_get_layer_array    Get the number of neurons in each layer in the network
fann_get_learning_momentum    Returns the learning momentum
fann_get_learning_rate    Returns the learning rate
fann_get_MSE    Reads the mean square error from the network
fann_get_network_type    Get the type of neural network it was created as
fann_get_num_input    Get the number of input neurons
fann_get_num_layers    Get the number of layers in the neural network
fann_get_num_output    Get the number of output neurons
fann_get_quickprop_decay    Returns the decay which is a factor that weights should decrease in each iteration during quickprop training
fann_get_quickprop_mu    Returns the mu factor
fann_get_rprop_decrease_factor    Returns the increase factor used during RPROP training
fann_get_rprop_delta_max    Returns the maximum step-size
fann_get_rprop_delta_min    Returns the minimum step-size
fann_get_rprop_delta_zero    Returns the initial step-size
fann_get_rprop_increase_factor    Returns the increase factor used during RPROP training
fann_get_sarprop_step_error_shift    Returns the sarprop step error shift
fann_get_sarprop_step_error_threshold_factor    Returns the sarprop step error threshold factor
fann_get_sarprop_temperature    Returns the sarprop temperature
fann_get_sarprop_weight_decay_shift    Returns the sarprop weight decay shift
fann_get_total_connections    Get the total number of connections in the entire network
fann_get_total_neurons    Get the total number of neurons in the entire network
fann_get_training_algorithm    Returns the training algorithm
fann_get_train_error_function    Returns the error function used during training
fann_get_train_stop_function    Returns the stop function used during training
fann_init_weights    Initialize the weights using Widrow + Nguyen’s algorithm
fann_length_train_data    Returns the number of training patterns in the train data
fann_merge_train_data    Merges the train data
fann_num_input_train_data    Returns the number of inputs in each of the training patterns in the train data
fann_num_output_train_data    Returns the number of outputs in each of the training patterns in the train data
fann_print_error    Prints the error string
fann_randomize_weights    Give each connection a random weight between min_weight and max_weight
fann_read_train_from_file    Reads a file that stores training data
fann_reset_errno    Resets the last error number
fann_reset_errstr    Resets the last error string
fann_reset_MSE    Resets the mean square error from the network
fann_run    Will run input through the neural network
fann_save    Saves the entire network to a configuration file
fann_save_train    Save the training structure to a file
fann_scale_input    Scale data in input vector before feed it to ann based on previously calculated parameters
fann_scale_input_train_data    Scales the inputs in the training data to the specified range
fann_scale_output    Scale data in output vector before feed it to ann based on previously calculated parameters
fann_scale_output_train_data    Scales the outputs in the training data to the specified range
fann_scale_train    Scale input and output data based on previously calculated parameters
fann_scale_train_data    Scales the inputs and outputs in the training data to the specified range
fann_set_activation_function    Sets the activation function for supplied neuron and layer
fann_set_activation_function_hidden    Sets the activation function for all of the hidden layers
fann_set_activation_function_layer    Sets the activation function for all the neurons in the supplied layer.
fann_set_activation_function_output    Sets the activation function for the output layer
fann_set_activation_steepness    Sets the activation steepness for supplied neuron and layer number
fann_set_activation_steepness_hidden    Sets the steepness of the activation steepness for all neurons in the all hidden layers
fann_set_activation_steepness_layer    Sets the activation steepness for all of the neurons in the supplied layer number
fann_set_activation_steepness_output    Sets the steepness of the activation steepness in the output layer
fann_set_bit_fail_limit    Set the bit fail limit used during training
fann_set_callback    Sets the callback function for use during training
fann_set_cascade_activation_functions    Sets the array of cascade candidate activation functions
fann_set_cascade_activation_steepnesses    Sets the array of cascade candidate activation steepnesses
fann_set_cascade_candidate_change_fraction    Sets the cascade candidate change fraction
fann_set_cascade_candidate_limit    Sets the candidate limit
fann_set_cascade_candidate_stagnation_epochs    Sets the number of cascade candidate stagnation epochs
fann_set_cascade_max_cand_epochs    Sets the max candidate epochs
fann_set_cascade_max_out_epochs    Sets the maximum out epochs
fann_set_cascade_min_cand_epochs    Sets the min candidate epochs
fann_set_cascade_min_out_epochs    Sets the minimum out epochs
fann_set_cascade_num_candidate_groups    Sets the number of candidate groups
fann_set_cascade_output_change_fraction    Sets the cascade output change fraction
fann_set_cascade_output_stagnation_epochs    Sets the number of cascade output stagnation epochs
fann_set_cascade_weight_multiplier    Sets the weight multiplier
fann_set_error_log    Sets where the errors are logged to
fann_set_input_scaling_params    Calculate input scaling parameters for future use based on training data
fann_set_learning_momentum    Sets the learning momentum
fann_set_learning_rate    Sets the learning rate
fann_set_output_scaling_params    Calculate output scaling parameters for future use based on training data
fann_set_quickprop_decay    Sets the quickprop decay factor
fann_set_quickprop_mu    Sets the quickprop mu factor
fann_set_rprop_decrease_factor    Sets the decrease factor used during RPROP training
fann_set_rprop_delta_max    Sets the maximum step-size
fann_set_rprop_delta_min    Sets the minimum step-size
fann_set_rprop_delta_zero    Sets the initial step-size
fann_set_rprop_increase_factor    Sets the increase factor used during RPROP training
fann_set_sarprop_step_error_shift    Sets the sarprop step error shift
fann_set_sarprop_step_error_threshold_factor    Sets the sarprop step error threshold factor
fann_set_sarprop_temperature    Sets the sarprop temperature
fann_set_sarprop_weight_decay_shift    Sets the sarprop weight decay shift
fann_set_scaling_params    Calculate input and output scaling parameters for future use based on training data
fann_set_training_algorithm    Sets the training algorithm
fann_set_train_error_function    Sets the error function used during training
fann_set_train_stop_function    Sets the stop function used during training
fann_set_weight    Set a connection in the network
fann_set_weight_array    Set connections in the network
fann_shuffle_train_data    Shuffles training data, randomizing the order
fann_subset_train_data    Returns an copy of a subset of the train data
fann_test    Test with a set of inputs, and a set of desired outputs
fann_test_data    Test a set of training data and calculates the MSE for the training data
fann_train    Train one iteration with a set of inputs, and a set of desired outputs
fann_train_epoch    Train one epoch with a set of training data
fann_train_on_data    Trains on an entire dataset for a period of time
fann_train_on_file    Trains on an entire dataset, which is read from file, for a period of time
fastcgi_finish_request    冲刷(flush)所有响应的数据给客户端
fbsql_affected_rows    Get number of affected rows in previous FrontBase operation
fbsql_autocommit    Enable or disable autocommit
fbsql_blob_size    Get the size of a BLOB
fbsql_change_user    Change logged in user of the active connection
fbsql_clob_size    Get the size of a CLOB
fbsql_close    Close FrontBase connection
fbsql_commit    Commits a transaction to the database
fbsql_connect    Open a connection to a FrontBase Server
fbsql_create_blob    Create a BLOB
fbsql_create_clob    Create a CLOB
fbsql_create_db    Create a FrontBase database
fbsql_database    Get or set the database name used with a connection
fbsql_database_password    Sets or retrieves the password for a FrontBase database
fbsql_data_seek    Move internal result pointer
fbsql_db_query    Send a FrontBase query
fbsql_db_status    Get the status for a given database
fbsql_drop_db    Drop (delete) a FrontBase database
fbsql_errno    Returns the error number from previous operation
fbsql_error    Returns the error message from previous operation
fbsql_fetch_array    Fetch a result row as an associative array, a numeric array, or both
fbsql_fetch_assoc    Fetch a result row as an associative array
fbsql_fetch_field    Get column information from a result and return as an object
fbsql_fetch_lengths    Get the length of each output in a result
fbsql_fetch_object    Fetch a result row as an object
fbsql_fetch_row    Get a result row as an enumerated array
fbsql_field_flags    Get the flags associated with the specified field in a result
fbsql_field_len    Returns the length of the specified field
fbsql_field_name    Get the name of the specified field in a result
fbsql_field_seek    Set result pointer to a specified field offset
fbsql_field_table    Get name of the table the specified field is in
fbsql_field_type    Get the type of the specified field in a result
fbsql_free_result    Free result memory
fbsql_get_autostart_info    说明
fbsql_hostname    Get or set the host name used with a connection
fbsql_insert_id    Get the id generated from the previous INSERT operation
fbsql_list_dbs    List databases available on a FrontBase server
fbsql_list_fields    List FrontBase result fields
fbsql_list_tables    List tables in a FrontBase database
fbsql_next_result    Move the internal result pointer to the next result
fbsql_num_fields    Get number of fields in result
fbsql_num_rows    Get number of rows in result
fbsql_password    Get or set the user password used with a connection
fbsql_pconnect    Open a persistent connection to a FrontBase Server
fbsql_query    Send a FrontBase query
fbsql_read_blob    Read a BLOB from the database
fbsql_read_clob    Read a CLOB from the database
fbsql_result    Get result data
fbsql_rollback    Rollback a transaction to the database
fbsql_rows_fetched    Get the number of rows affected by the last statement
fbsql_select_db    Select a FrontBase database
fbsql_set_characterset    Change input/output character set
fbsql_set_lob_mode    Set the LOB retrieve mode for a FrontBase result set
fbsql_set_password    Change the password for a given user
fbsql_set_transaction    Set the transaction locking and isolation
fbsql_start_db    Start a database on local or remote server
fbsql_stop_db    Stop a database on local or remote server
fbsql_tablename    别名 fbsql_table_name
fbsql_table_name    Get table name of field
fbsql_username    Get or set the username for the connection
fbsql_warnings    Enable or disable FrontBase warnings
fclose    关闭一个已打开的文件指针
fdf_add_doc_javascript    Adds javascript code to the FDF document
fdf_add_template    Adds a template into the FDF document
fdf_close    Close an FDF document
fdf_create    Create a new FDF document
fdf_enum_values    Call a user defined function for each document value
fdf_errno    Return error code for last fdf operation
fdf_error    Return error description for FDF error code
fdf_get_ap    Get the appearance of a field
fdf_get_attachment    Extracts uploaded file embedded in the FDF
fdf_get_encoding    Get the value of the /Encoding key
fdf_get_file    Get the value of the /F key
fdf_get_flags    Gets the flags of a field
fdf_get_opt    Gets a value from the opt array of a field
fdf_get_status    Get the value of the /STATUS key
fdf_get_value    Get the value of a field
fdf_get_version    Gets version number for FDF API or file
fdf_header    Sets FDF-specific output headers
fdf_next_field_name    Get the next field name
fdf_open    Open a FDF document
fdf_open_string    Read a FDF document from a string
fdf_remove_item    Sets target frame for form
fdf_save    Save a FDF document
fdf_save_string    Returns the FDF document as a string
fdf_set_ap    Set the appearance of a field
fdf_set_encoding    Sets FDF character encoding
fdf_set_file    Set PDF document to display FDF data in
fdf_set_flags    Sets a flag of a field
fdf_set_javascript_action    Sets an javascript action of a field
fdf_set_on_import_javascript    Adds javascript code to be executed when Acrobat opens the FDF
fdf_set_opt    Sets an option of a field
fdf_set_status    Set the value of the /STATUS key
fdf_set_submit_form_action    Sets a submit form action of a field
fdf_set_target_frame    Set target frame for form display
fdf_set_value    Set the value of a field
fdf_set_version    Sets version number for a FDF file
feof    测试文件指针是否到了文件结束的位置
fflush    将缓冲内容输出到文件
fgetc    从文件指针中读取字符
fgetcsv    从文件指针中读入一行并解析 CSV 字段
fgets    从文件指针中读取一行
fgetss    从文件指针中读取一行并过滤掉 HTML 标记
file    把整个文件读入一个数组中
fileatime    取得文件的上次访问时间
filectime    取得文件的 inode 修改时间
filegroup    取得文件的组
fileinode    取得文件的 inode
filemtime    取得文件修改时间
fileowner    取得文件的所有者
fileperms    取得文件的权限
filepro    Read and verify the map file
filepro_fieldcount    Find out how many fields are in a filePro database
filepro_fieldname    Gets the name of a field
filepro_fieldtype    Gets the type of a field
filepro_fieldwidth    Gets the width of a field
filepro_retrieve    Retrieves data from a filePro database
filepro_rowcount    Find out how many rows are in a filePro database
filesize    取得文件大小
filetype    取得文件类型
file_exists    检查文件或目录是否存在
file_get_contents    将整个文件读入一个字符串
file_put_contents    将一个字符串写入文件
filter_has_var    Checks if variable of specified type exists
filter_id    返回与某个特定名称的过滤器相关联的id
filter_input    通过名称获取特定的外部变量，并且可以通过过滤器处理它
filter_input_array    获取一系列外部变量，并且可以通过过滤器处理它们
filter_list    返回所支持的过滤器列表
filter_var    使用特定的过滤器过滤一个变量
filter_var_array    获取多个变量并且过滤它们
finfo_close    关闭 fileinfo 资源
finfo_open    创建一个 fileinfo 资源
floatval    获取变量的浮点值
flock    轻便的咨询文件锁定
floor    舍去法取整
flush    刷新输出缓冲
fmod    返回除法的浮点数余数
fnmatch    用模式匹配文件名
fopen    打开文件或者 URL
forward_static_call    Call a static method
forward_static_call_array    Call a static method and pass the arguments as array
fpassthru    输出文件指针处的所有剩余数据
fprintf    将格式化后的字符串写入到流
fputcsv    将行格式化为 CSV 并写入文件指针
fputs    fwrite 的别名
fread    读取文件（可安全用于二进制文件）
FrenchToJD    从一个French Republican历法的日期得到Julian Day计数。
fribidi_log2vis    Convert a logical string to a visual one
fscanf    从文件中格式化输入
fseek    在文件指针中定位
fsockopen    打开一个网络连接或者一个Unix套接字连接
fstat    通过已打开的文件指针取得文件信息
ftell    返回文件指针读/写的位置
ftok    Convert a pathname and a project identifier to a System V IPC key
FTP context options    FTP context option listing
ftp_alloc    为要上传的文件分配空间
ftp_cdup    切换到当前目录的父目录
ftp_chdir    在 FTP 服务器上改变当前目录
ftp_chmod    设置 FTP 服务器上的文件权限
ftp_close    关闭一个 FTP 连接
ftp_connect    建立一个新的 FTP 连接
ftp_delete    删除 FTP 服务器上的一个文件
ftp_exec    请求运行一条 FTP 命令
ftp_fget    从 FTP 服务器上下载一个文件并保存到本地一个已经打开的文件中
ftp_fput    上传一个已经打开的文件到 FTP 服务器
ftp_get    从 FTP 服务器上下载一个文件
ftp_get_option    返回当前 FTP 连接的各种不同的选项设置
ftp_login    登录 FTP 服务器
ftp_mdtm    返回指定文件的最后修改时间
ftp_mkdir    建立新目录
ftp_nb_continue    连续获取／发送文件（non-blocking）
ftp_nb_fget    从 FTP 服务器获取文件并写入到一个打开的文件（非阻塞）
ftp_nb_fput    将文件存储到 FTP 服务器 （非阻塞）
ftp_nb_get    从 FTP 服务器上获取文件并写入本地文件（non-blocking）
ftp_nb_put    存储一个文件至 FTP 服务器（non-blocking）
ftp_nlist    返回给定目录的文件列表
ftp_pasv    返回当前 FTP 被动模式是否打开
ftp_put    上传文件到 FTP 服务器
ftp_pwd    返回当前目录名
ftp_quit    ftp_close 的 别名
ftp_raw    向 FTP 服务器发送命令
ftp_rawlist    返回指定目录下文件的详细列表
ftp_rename    更改 FTP 服务器上的文件或目录名
ftp_rmdir    删除 FTP 服务器上的一个目录
ftp_set_option    设置各种 FTP 运行时选项
ftp_site    向服务器发送 SITE 命令
ftp_size    返回指定文件的大小
ftp_ssl_connect    打开 SSL-FTP 连接
ftp_systype    返回远程 FTP 服务器的操作系统类型
ftruncate    将文件截断到给定的长度
function_exists    如果给定的函数已经被定义就返回 TRUE
func_get_arg    返回参数列表的某一项
func_get_args    返回一个包含函数参数列表的数组
func_num_args    Returns the number of arguments passed to the function

fwrite    写入文件（可安全用于二进制文件）

g
函数    说明
gc_collect_cycles    强制收集所有现存的垃圾循环周期
gc_disable    停用循环引用收集器
gc_enable    激活循环引用收集器
gc_enabled    返回循环引用计数器的状态
gc_mem_caches    Reclaims memory used by the Zend Engine memory manager
gd_info    取得当前安装的 GD 库的信息
geoip_asnum_by_name    Get the Autonomous System Numbers (ASN)
geoip_continent_code_by_name    Get the two letter continent code
geoip_country_code3_by_name    Get the three letter country code
geoip_country_code_by_name    Get the two letter country code
geoip_country_name_by_name    Get the full country name
geoip_database_info    Get GeoIP Database information
geoip_db_avail    Determine if GeoIP Database is available
geoip_db_filename    Returns the filename of the corresponding GeoIP Database
geoip_db_get_all_info    Returns detailed information about all GeoIP database types
geoip_domain_by_name    Get the second level domain name
geoip_id_by_name    Get the Internet connection type
geoip_isp_by_name    Get the Internet Service Provider (ISP) name
geoip_netspeedcell_by_name    Get the Internet connection speed
geoip_org_by_name    Get the organization name
geoip_record_by_name    Returns the detailed City information found in the GeoIP Database
geoip_region_by_name    Get the country code and region
geoip_region_name_by_code    Returns the region name for some country and region code combo
geoip_setup_custom_directory    Set a custom directory for the GeoIP database.
geoip_time_zone_by_country_and_region    Returns the time zone for some country and region code combo
getallheaders    获取全部 HTTP 请求头信息
getcwd    取得当前工作目录
getdate    取得日期／时间信息
getenv    获取一个环境变量的值
gethostbyaddr    获取指定的IP地址对应的主机名
gethostbyname    Get the IPv4 address corresponding to a given Internet host name
gethostbynamel    Get a list of IPv4 addresses corresponding to a given Internet host name
gethostname    Gets the host name
getimagesize    取得图像大小
getimagesizefromstring    从字符串中获取图像尺寸信息
getlastmod    获取页面最后修改的时间
getmxrr    Get MX records corresponding to a given Internet host name
getmygid    获取当前 PHP 脚本拥有者的 GID
getmyinode    获取当前脚本的索引节点（inode）
getmypid    获取 PHP 进程的 ID
getmyuid    获取 PHP 脚本所有者的 UID
getopt    从命令行参数列表中获取选项
getprotobyname    Get protocol number associated with protocol name
getprotobynumber    Get protocol name associated with protocol number
getrandmax    显示随机数最大的可能值
getrusage    获取当前资源使用状况
getservbyname    Get port number associated with an Internet service and protocol
getservbyport    Get Internet service which corresponds to port and protocol
gettext    Lookup a message in the current domain
gettimeofday    取得当前时间
gettype    获取变量的类型
get_browser    获取浏览器具有的功能
get_called_class    后期静态绑定（”Late Static Binding”）类的名称
get_cfg_var    获取 PHP 配置选项的值
get_class    返回对象的类名
get_class_methods    返回由类的方法名组成的数组
get_class_vars    返回由类的默认属性组成的数组
get_current_user    获取当前 PHP 脚本所有者名称
get_declared_classes    返回由已定义类的名字所组成的数组
get_declared_interfaces    返回一个数组包含所有已声明的接口
get_declared_traits    返回所有已定义的 traits 的数组
get_defined_constants    返回所有常量的关联数组，键是常量名，值是常量值
get_defined_functions    Returns an array of all defined functions
get_defined_vars    返回由所有已定义变量所组成的数组
get_extension_funcs    返回模块函数名称的数组
get_headers    取得服务器响应一个 HTTP 请求所发送的所有标头
get_html_translation_table    返回使用 htmlspecialchars 和 htmlentities 后的转换表
get_included_files    返回被 include 和 require 文件名的 array
get_include_path    获取当前的 include_path 配置选项
get_loaded_extensions    返回所有编译并加载模块名的 array
get_magic_quotes_gpc    获取当前 magic_quotes_gpc 的配置选项设置
get_magic_quotes_runtime    获取当前 magic_quotes_runtime 配置选项的激活状态
get_meta_tags    从一个文件中提取所有的 meta 标签 content 属性，返回一个数组
get_object_vars    返回由对象属性组成的关联数组
get_parent_class    返回对象或类的父类名
get_required_files    别名 get_included_files
get_resources    Returns active resources
get_resource_type    返回资源（resource）类型
glob    寻找与模式匹配的文件路径
gmdate    格式化一个 GMT/UTC 日期／时间
gmmktime    取得 GMT 日期的 UNIX 时间戳
gmp_abs    Absolute value
gmp_add    Add numbers
gmp_and    Bitwise AND
gmp_clrbit    Clear bit
gmp_cmp    Compare numbers
gmp_com    Calculates one’s complement
gmp_div    别名 gmp_div_q
gmp_divexact    Exact division of numbers
gmp_div_q    Divide numbers
gmp_div_qr    Divide numbers and get quotient and remainder
gmp_div_r    Remainder of the division of numbers
gmp_export    Export to a binary string
gmp_fact    Factorial
gmp_gcd    Calculate GCD
gmp_gcdext    Calculate GCD and multipliers
gmp_hamdist    Hamming distance
gmp_import    Import from a binary string
gmp_init    Create GMP number
gmp_intval    Convert GMP number to integer
gmp_invert    Inverse by modulo
gmp_jacobi    Jacobi symbol
gmp_legendre    Legendre symbol
gmp_mod    Modulo operation
gmp_mul    Multiply numbers
gmp_neg    Negate number
gmp_nextprime    Find next prime number
gmp_or    Bitwise OR
gmp_perfect_square    Perfect square check
gmp_popcount    Population count
gmp_pow    Raise number into power
gmp_powm    Raise number into power with modulo
gmp_prob_prime    Check if number is “probably prime”
gmp_random    Random number
gmp_random_bits    Random number
gmp_random_range    Random number
gmp_random_seed    Sets the RNG seed
gmp_root    Take the integer part of nth root
gmp_rootrem    Take the integer part and remainder of nth root
gmp_scan0    Scan for 0
gmp_scan1    Scan for 1
gmp_setbit    Set bit
gmp_sign    Sign of number
gmp_sqrt    Calculate square root
gmp_sqrtrem    Square root with remainder
gmp_strval    Convert GMP number to string
gmp_sub    Subtract numbers
gmp_testbit    Tests if a bit is set
gmp_xor    Bitwise XOR
gmstrftime    根据区域设置格式化 GMT/UTC 时间／日期
gnupg_adddecryptkey    Add a key for decryption
gnupg_addencryptkey    Add a key for encryption
gnupg_addsignkey    Add a key for signing
gnupg_cleardecryptkeys    Removes all keys which were set for decryption before
gnupg_clearencryptkeys    Removes all keys which were set for encryption before
gnupg_clearsignkeys    Removes all keys which were set for signing before
gnupg_decrypt    Decrypts a given text
gnupg_decryptverify    Decrypts and verifies a given text
gnupg_encrypt    Encrypts a given text
gnupg_encryptsign    Encrypts and signs a given text
gnupg_export    Exports a key
gnupg_geterror    Returns the errortext, if a function fails
gnupg_getprotocol    Returns the currently active protocol for all operations
gnupg_import    Imports a key
gnupg_init    Initialize a connection
gnupg_keyinfo    Returns an array with information about all keys that matches the given pattern
gnupg_setarmor    Toggle armored output
gnupg_seterrormode    Sets the mode for error_reporting
gnupg_setsignmode    Sets the mode for signing
gnupg_sign    Signs a given text
gnupg_verify    Verifies a signed text
gopher_parsedir    Translate a gopher formatted directory entry into an associative array.
grapheme_extract    Function to extract a sequence of default grapheme clusters from a text buffer, which must be encoded in UTF-8.
grapheme_stripos    Find position (in grapheme units) of first occurrence of a case-insensitive string
grapheme_stristr    Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack.
grapheme_strlen    Get string length in grapheme units
grapheme_strpos    Find position (in grapheme units) of first occurrence of a string
grapheme_strripos    Find position (in grapheme units) of last occurrence of a case-insensitive string
grapheme_strrpos    Find position (in grapheme units) of last occurrence of a string
grapheme_strstr    Returns part of haystack string from the first occurrence of needle to the end of haystack.
grapheme_substr    Return part of a string
GregorianToJD    转变一个Gregorian历法日期到Julian Day计数
gupnp_context_get_host_ip    Get the IP address
gupnp_context_get_port    Get the port
gupnp_context_get_subscription_timeout    Get the event subscription timeout
gupnp_context_host_path    Start hosting
gupnp_context_new    Create a new context
gupnp_context_set_subscription_timeout    Sets the event subscription timeout
gupnp_context_timeout_add    Sets a function to be called at regular intervals
gupnp_context_unhost_path    Stop hosting
gupnp_control_point_browse_start    Start browsing
gupnp_control_point_browse_stop    Stop browsing
gupnp_control_point_callback_set    Set control point callback
gupnp_control_point_new    Create a new control point
gupnp_device_action_callback_set    Set device callback function
gupnp_device_info_get    Get info of root device
gupnp_device_info_get_service    Get the service with type
gupnp_root_device_get_available    Check whether root device is available
gupnp_root_device_get_relative_location    Get the relative location of root device.
gupnp_root_device_new    Create a new root device
gupnp_root_device_set_available    Set whether or not root_device is available
gupnp_root_device_start    Start main loop
gupnp_root_device_stop    Stop main loop
gupnp_service_action_get    Retrieves the specified action arguments
gupnp_service_action_return    Return successfully
gupnp_service_action_return_error    Return error code
gupnp_service_action_set    Sets the specified action return values
gupnp_service_freeze_notify    Freeze new notifications
gupnp_service_info_get    Get full info of service
gupnp_service_info_get_introspection    Get resource introspection of service
gupnp_service_introspection_get_state_variable    Returns the state variable data
gupnp_service_notify    Notifies listening clients
gupnp_service_proxy_action_get    Send action to the service and get value
gupnp_service_proxy_action_set    Send action to the service and set value
gupnp_service_proxy_add_notify    Sets up callback for variable change notification
gupnp_service_proxy_callback_set    Set service proxy callback for signal
gupnp_service_proxy_get_subscribed    Check whether subscription is valid to the service
gupnp_service_proxy_remove_notify    Cancels the variable change notification
gupnp_service_proxy_send_action    Send action with multiple parameters synchronously
gupnp_service_proxy_set_subscribed    (Un)subscribes to the service.
gupnp_service_thaw_notify    Sends out any pending notifications and stops queuing of new ones.
gzclose    Close an open gz-file pointer
gzcompress    Compress a string
gzdecode    Decodes a gzip compressed string
gzdeflate    Deflate a string
gzencode    Create a gzip compressed string
gzeof    Test for EOF on a gz-file pointer
gzfile    Read entire gz-file into an array
gzgetc    Get character from gz-file pointer
gzgets    Get line from file pointer
gzgetss    Get line from gz-file pointer and strip HTML tags
gzinflate    Inflate a deflated string
gzopen    Open gz-file
gzpassthru    Output all remaining data on a gz-file pointer
gzputs    别名 gzwrite
gzread    Binary-safe gz-file read
gzrewind    Rewind the position of a gz-file pointer
gzseek    Seek on a gz-file pointer
gztell    Tell gz-file pointer read/write position
gzuncompress    Uncompress a compressed string
gzwrite    Binary-safe gz-file write
h
函数    说明
hash    生成哈希值 （消息摘要）
hash_algos    返回已注册的哈希算法列表
hash_copy    拷贝哈希运算上下文
hash_equals    可防止时序攻击的字符串比较
hash_file    使用给定文件的内容生成哈希值
hash_final    结束增量哈希，并且返回摘要结果
hash_hmac    使用 HMAC 方法生成带有密钥的哈希值
hash_hmac_file    使用 HMAC 方法和给定文件的内容生成带密钥的哈希值
hash_init    初始化增量哈希运算上下文
hash_pbkdf2    生成所提供密码的 PBKDF2 密钥导出
hash_update    向活跃的哈希运算上下文中填充数据
hash_update_file    从文件向活跃的哈希运算上下文中填充数据
hash_update_stream    从打开的流向活跃的哈希运算上下文中填充数据
header    发送原生 HTTP 头
headers_list    Returns a list of response headers sent (or ready to send)
headers_sent    Checks if or where headers have been sent
header_register_callback    Call a header function
header_remove    Remove previously set headers
hebrev    将逻辑顺序希伯来文（logical-Hebrew）转换为视觉顺序希伯来文（visual-Hebrew）
hebrevc    将逻辑顺序希伯来文（logical-Hebrew）转换为视觉顺序希伯来文（visual-Hebrew），并且转换换行符
hex2bin    转换十六进制字符串为二进制字符串
hexdec    十六进制转换为十进制
highlight_file    语法高亮一个文件
highlight_string    字符串的语法高亮
htmlentities    Convert all applicable characters to HTML entities
htmlspecialchars    Convert special characters to HTML entities
htmlspecialchars_decode    将特殊的 HTML 实体转换回普通字符
html_entity_decode    Convert all HTML entities to their applicable characters
HTTP context 选项    HTTP context 的选项列表
http_build_cookie    Build cookie string
http_build_query    生成 URL-encode 之后的请求字符串
http_build_str    产生一个查询字符串
http_build_url    产生一个 URL
http_cache_etag    Caching by ETag
http_cache_last_modified    Caching by last modification
http_chunked_decode    Decode chunked-encoded data
http_date    Compose HTTP RFC compliant date
http_deflate    Deflate data
http_get    Perform GET request
http_get_request_body    Get request body as string
http_get_request_body_stream    Get request body as stream
http_get_request_headers    Get request headers as array
http_head    Perform HEAD request
http_inflate    Inflate data
http_match_etag    Match ETag
http_match_modified    Match last modification
http_match_request_header    Match any header
http_negotiate_charset    Negotiate client’s preferred character set
http_negotiate_content_type    Negotiate client’s preferred content type
http_negotiate_language    Negotiate client’s preferred language
http_parse_cookie    Parse HTTP cookie
http_parse_headers    Parse HTTP headers
http_parse_message    Parse HTTP messages
http_parse_params    Parse parameter list
http_persistent_handles_clean    Clean up persistent handles
http_persistent_handles_count    Stat persistent handles
http_persistent_handles_ident    Get/set ident of persistent handles
http_post_data    Perform POST request with pre-encoded data
http_post_fields    Perform POST request with data to be encoded
http_put_data    Perform PUT request with data
http_put_file    Perform PUT request with file
http_put_stream    Perform PUT request with stream
http_redirect    Issue HTTP redirect
http_request    Perform custom request
http_request_body_encode    Encode request body
http_request_method_exists    Check whether request method exists
http_request_method_name    Get request method name
http_request_method_register    Register request method
http_request_method_unregister    Unregister request method
http_response_code    Get or Set the HTTP response code
http_send_content_disposition    Send Content-Disposition
http_send_content_type    Send Content-Type
http_send_data    Send arbitrary data
http_send_file    Send file
http_send_last_modified    Send Last-Modified
http_send_status    Send HTTP response status
http_send_stream    Send stream
http_support    Check built-in HTTP support
http_throttle    HTTP throttling
hwapi_attribute_new    Creates instance of class hw_api_attribute
hwapi_content_new    Create new instance of class hw_api_content
hwapi_hgcsp    Returns object of class hw_api
hwapi_object_new    Creates a new instance of class hwapi_object_new
hypot    计算一直角三角形的斜边长度
i
函数    说明
ibase_add_user    Add a user to a security database
ibase_affected_rows    Return the number of rows that were affected by the previous query
ibase_backup    Initiates a backup task in the service manager and returns immediately
ibase_blob_add    Add data into a newly created blob
ibase_blob_cancel    Cancel creating blob
ibase_blob_close    Close blob
ibase_blob_create    Create a new blob for adding data
ibase_blob_echo    Output blob contents to browser
ibase_blob_get    Get len bytes data from open blob
ibase_blob_import    Create blob, copy file in it, and close it
ibase_blob_info    Return blob length and other useful info
ibase_blob_open    Open blob for retrieving data parts
ibase_close    Close a connection to an InterBase database
ibase_commit    Commit a transaction
ibase_commit_ret    Commit a transaction without closing it
ibase_connect    Open a connection to a database
ibase_db_info    Request statistics about a database
ibase_delete_user    Delete a user from a security database
ibase_drop_db    Drops a database
ibase_errcode    Return an error code
ibase_errmsg    Return error messages
ibase_execute    Execute a previously prepared query
ibase_fetch_assoc    Fetch a result row from a query as an associative array
ibase_fetch_object    Get an object from a InterBase database
ibase_fetch_row    Fetch a row from an InterBase database
ibase_field_info    Get information about a field
ibase_free_event_handler    Cancels a registered event handler
ibase_free_query    Free memory allocated by a prepared query
ibase_free_result    Free a result set
ibase_gen_id    Increments the named generator and returns its new value
ibase_maintain_db    Execute a maintenance command on the database server
ibase_modify_user    Modify a user to a security database
ibase_name_result    Assigns a name to a result set
ibase_num_fields    Get the number of fields in a result set
ibase_num_params    Return the number of parameters in a prepared query
ibase_param_info    Return information about a parameter in a prepared query
ibase_pconnect    Open a persistent connection to an InterBase database
ibase_prepare    Prepare a query for later binding of parameter placeholders and execution
ibase_query    Execute a query on an InterBase database
ibase_restore    Initiates a restore task in the service manager and returns immediately
ibase_rollback    Roll back a transaction
ibase_rollback_ret    Roll back a transaction without closing it
ibase_server_info    Request information about a database server
ibase_service_attach    Connect to the service manager
ibase_service_detach    Disconnect from the service manager
ibase_set_event_handler    Register a callback function to be called when events are posted
ibase_trans    Begin a transaction
ibase_wait_event    Wait for an event to be posted by the database
iconv    字符串按要求的字符编码来转换
iconv_get_encoding    获取 iconv 扩展的内部配置变量
iconv_mime_decode    Decodes a MIME header field
iconv_mime_decode_headers    一次性解码多个 MIME 头字段
iconv_mime_encode    Composes a MIME header field
iconv_set_encoding    为字符编码转换设定当前设置
iconv_strlen    返回字符串的字符数统计
iconv_strpos    Finds position of first occurrence of a needle within a haystack
iconv_strrpos    Finds the last occurrence of a needle within a haystack
iconv_substr    截取字符串的部分
id3_get_frame_long_name    Get the long name of an ID3v2 frame
id3_get_frame_short_name    Get the short name of an ID3v2 frame
id3_get_genre_id    Get the id for a genre
id3_get_genre_list    Get all possible genre values
id3_get_genre_name    Get the name for a genre id
id3_get_tag    Get all information stored in an ID3 tag
id3_get_version    Get version of an ID3 tag
id3_remove_tag    Remove an existing ID3 tag
id3_set_tag    Update information stored in an ID3 tag
idate    将本地时间日期格式化为整数
idn_to_ascii    Convert domain name to IDNA ASCII form.
idn_to_unicode    别名 idn_to_utf8
idn_to_utf8    Convert domain name from IDNA ASCII to Unicode.
ifxus_close_slob    Deletes the slob object
ifxus_create_slob    Creates an slob object and opens it
ifxus_free_slob    Deletes the slob object
ifxus_open_slob    Opens an slob object
ifxus_read_slob    Reads nbytes of the slob object
ifxus_seek_slob    Sets the current file or seek position
ifxus_tell_slob    Returns the current file or seek position
ifxus_write_slob    Writes a string into the slob object
ifx_affected_rows    Get number of rows affected by a query
ifx_blobinfile_mode    Set the default blob mode for all select queries
ifx_byteasvarchar    Set the default byte mode
ifx_close    Close Informix connection
ifx_connect    Open Informix server connection
ifx_copy_blob    Duplicates the given blob object
ifx_create_blob    Creates an blob object
ifx_create_char    Creates an char object
ifx_do    Execute a previously prepared SQL-statement
ifx_error    Returns error code of last Informix call
ifx_errormsg    Returns error message of last Informix call
ifx_fetch_row    Get row as an associative array
ifx_fieldproperties    List of SQL fieldproperties
ifx_fieldtypes    List of Informix SQL fields
ifx_free_blob    Deletes the blob object
ifx_free_char    Deletes the char object
ifx_free_result    Releases resources for the query
ifx_getsqlca    Get the contents of sqlca.sqlerrd[0..5] after a query
ifx_get_blob    Return the content of a blob object
ifx_get_char    Return the content of the char object
ifx_htmltbl_result    Formats all rows of a query into a HTML table
ifx_nullformat    Sets the default return value on a fetch row
ifx_num_fields    Returns the number of columns in the query
ifx_num_rows    Count the rows already fetched from a query
ifx_pconnect    Open persistent Informix connection
ifx_prepare    Prepare an SQL-statement for execution
ifx_query    Send Informix query
ifx_textasvarchar    Set the default text mode
ifx_update_blob    Updates the content of the blob object
ifx_update_char    Updates the content of the char object
ignore_user_abort    设置客户端断开连接时是否中断脚本的执行
iis_add_server    Creates a new virtual web server
iis_get_dir_security    Gets Directory Security
iis_get_script_map    Gets script mapping on a virtual directory for a specific extension
iis_get_server_by_comment    Return the instance number associated with the Comment
iis_get_server_by_path    Return the instance number associated with the Path
iis_get_server_rights    Gets server rights
iis_get_service_state    Returns the state for the service defined by ServiceId
iis_remove_server    Removes the virtual web server indicated by ServerInstance
iis_set_app_settings    Creates application scope for a virtual directory
iis_set_dir_security    Sets Directory Security
iis_set_script_map    Sets script mapping on a virtual directory
iis_set_server_rights    Sets server rights
iis_start_server    Starts the virtual web server
iis_start_service    Starts the service defined by ServiceId
iis_stop_server    Stops the virtual web server
iis_stop_service    Stops the service defined by ServiceId
image2wbmp    以 WBMP 格式将图像输出到浏览器或文件
imageaffine    返回经过仿射变换后的图像，剪切区域可选
imageaffinematrixconcat    Concat two matrices (as in doing many ops in one go)
imageaffinematrixget    Return an image containing the affine tramsformed src image, using an optional clipping area
imagealphablending    设定图像的混色模式
imageantialias    是否使用抗锯齿（antialias）功能
imagearc    画椭圆弧
imagechar    水平地画一个字符
imagecharup    垂直地画一个字符
imagecolorallocate    为一幅图像分配颜色
imagecolorallocatealpha    为一幅图像分配颜色 + alpha
imagecolorat    取得某像素的颜色索引值
imagecolorclosest    取得与指定的颜色最接近的颜色的索引值
imagecolorclosestalpha    取得与指定的颜色加透明度最接近的颜色
imagecolorclosesthwb    取得与给定颜色最接近的色度的黑白色的索引
imagecolordeallocate    取消图像颜色的分配
imagecolorexact    取得指定颜色的索引值
imagecolorexactalpha    取得指定的颜色加透明度的索引值
imagecolormatch    使一个图像中调色板版本的颜色与真彩色版本更能匹配
imagecolorresolve    取得指定颜色的索引值或有可能得到的最接近的替代值
imagecolorresolvealpha    取得指定颜色 + alpha 的索引值或有可能得到的最接近的替代值
imagecolorset    给指定调色板索引设定颜色
imagecolorsforindex    取得某索引的颜色
imagecolorstotal    取得一幅图像的调色板中颜色的数目
imagecolortransparent    将某个颜色定义为透明色
imageconvolution    用系数 div 和 offset 申请一个 3×3 的卷积矩阵
imagecopy    拷贝图像的一部分
imagecopymerge    拷贝并合并图像的一部分
imagecopymergegray    用灰度拷贝并合并图像的一部分
imagecopyresampled    重采样拷贝部分图像并调整大小
imagecopyresized    拷贝部分图像并调整大小
imagecreate    新建一个基于调色板的图像
imagecreatefromgd    从 GD 文件或 URL 新建一图像
imagecreatefromgd2    从 GD2 文件或 URL 新建一图像
imagecreatefromgd2part    从给定的 GD2 文件或 URL 中的部分新建一图像
imagecreatefromgif    由文件或 URL 创建一个新图象。
imagecreatefromjpeg    由文件或 URL 创建一个新图象。
imagecreatefrompng    由文件或 URL 创建一个新图象。
imagecreatefromstring    从字符串中的图像流新建一图像
imagecreatefromwbmp    由文件或 URL 创建一个新图象。
imagecreatefromwebp    由文件或 URL 创建一个新图象。
imagecreatefromxbm    由文件或 URL 创建一个新图象。
imagecreatefromxpm    由文件或 URL 创建一个新图象。
imagecreatetruecolor    新建一个真彩色图像
imagecrop    Crop an image using the given coordinates and size, x, y, width and height
imagecropauto    Crop an image automatically using one of the available modes
imagedashedline    画一虚线
imagedestroy    销毁一图像
imageellipse    画一个椭圆
imagefill    区域填充
imagefilledarc    画一椭圆弧且填充
imagefilledellipse    画一椭圆并填充
imagefilledpolygon    画一多边形并填充
imagefilledrectangle    画一矩形并填充
imagefilltoborder    区域填充到指定颜色的边界为止
imagefilter    对图像使用过滤器
imageflip    Flips an image using a given mode
imagefontheight    取得字体高度
imagefontwidth    取得字体宽度
imageftbbox    给出一个使用 FreeType 2 字体的文本框
imagefttext    使用 FreeType 2 字体将文本写入图像
imagegammacorrect    对 GD 图像应用 gamma 修正
imagegd    将 GD 图像输出到浏览器或文件
imagegd2    将 GD2 图像输出到浏览器或文件
imagegif    输出图象到浏览器或文件。
imagegrabscreen    Captures the whole screen
imagegrabwindow    Captures a window
imageinterlace    激活或禁止隔行扫描
imageistruecolor    检查图像是否为真彩色图像
imagejpeg    输出图象到浏览器或文件。
imagelayereffect    设定 alpha 混色标志以使用绑定的 libgd 分层效果
imageline    画一条线段
imageloadfont    载入一新字体
imagepalettecopy    将调色板从一幅图像拷贝到另一幅
imagepalettetotruecolor    Converts a palette based image to true color
imagepng    以 PNG 格式将图像输出到浏览器或文件
imagepolygon    画一个多边形
imagepsbbox    给出一个使用 PostScript Type1 字体的文本方框
imagepsencodefont    改变字体中的字符编码矢量
imagepsextendfont    扩充或精简字体
imagepsfreefont    释放一个 PostScript Type 1 字体所占用的内存
imagepsloadfont    从文件中加载一个 PostScript Type 1 字体
imagepsslantfont    倾斜某字体
imagepstext    用 PostScript Type1 字体把文本字符串画在图像上
imagerectangle    画一个矩形
imagerotate    用给定角度旋转图像
imagesavealpha    设置标记以在保存 PNG 图像时保存完整的 alpha 通道信息（与单一透明色相反）
imagescale    Scale an image using the given new width and height
imagesetbrush    设定画线用的画笔图像
imagesetinterpolation    Set the interpolation method
imagesetpixel    画一个单一像素
imagesetstyle    设定画线的风格
imagesetthickness    设定画线的宽度
imagesettile    设定用于填充的贴图
imagestring    水平地画一行字符串
imagestringup    垂直地画一行字符串
imagesx    取得图像宽度
imagesy    取得图像高度
imagetruecolortopalette    将真彩色图像转换为调色板图像
imagettfbbox    取得使用 TrueType 字体的文本的范围
imagettftext    用 TrueType 字体向图像写入文本
imagetypes    返回当前 PHP 版本所支持的图像类型
imagewbmp    以 WBMP 格式将图像输出到浏览器或文件
imagewebp    将 WebP 格式的图像输出到浏览器或文件
imagexbm    将 XBM 图像输出到浏览器或文件
image_type_to_extension    取得图像类型的文件后缀
image_type_to_mime_type    取得 getimagesize，exif_read_data，exif_thumbnail，exif_imagetype 所返回的图像类型的 MIME 类型
imap_8bit    Convert an 8bit string to a quoted-printable string
imap_alerts    Returns all IMAP alert messages that have occurred
imap_append    Append a string message to a specified mailbox
imap_base64    Decode BASE64 encoded text
imap_binary    Convert an 8bit string to a base64 string
imap_body    Read the message body
imap_bodystruct    Read the structure of a specified body section of a specific message
imap_check    Check current mailbox
imap_clearflag_full    Clears flags on messages
imap_close    Close an IMAP stream
imap_create    别名 imap_createmailbox
imap_createmailbox    Create a new mailbox
imap_delete    Mark a message for deletion from current mailbox
imap_deletemailbox    Delete a mailbox
imap_errors    Returns all of the IMAP errors that have occurred
imap_expunge    Delete all messages marked for deletion
imap_fetchbody    Fetch a particular section of the body of the message
imap_fetchheader    Returns header for a message
imap_fetchmime    Fetch MIME headers for a particular section of the message
imap_fetchstructure    Read the structure of a particular message
imap_fetchtext    别名 imap_body
imap_fetch_overview    Read an overview of the information in the headers of the given message
imap_gc    Clears IMAP cache
imap_getacl    Gets the ACL for a given mailbox
imap_getmailboxes    Read the list of mailboxes, returning detailed information on each one
imap_getsubscribed    List all the subscribed mailboxes
imap_get_quota    Retrieve the quota level settings, and usage statics per mailbox
imap_get_quotaroot    Retrieve the quota settings per user
imap_header    别名 imap_headerinfo
imap_headerinfo    Read the header of the message
imap_headers    Returns headers for all messages in a mailbox
imap_last_error    Gets the last IMAP error that occurred during this page request
imap_list    Read the list of mailboxes
imap_listmailbox    别名 imap_list
imap_listscan    Returns the list of mailboxes that matches the given text
imap_listsubscribed    别名 imap_lsub
imap_lsub    List all the subscribed mailboxes
imap_mail    Send an email message
imap_mailboxmsginfo    Get information about the current mailbox
imap_mail_compose    Create a MIME message based on given envelope and body sections
imap_mail_copy    Copy specified messages to a mailbox
imap_mail_move    Move specified messages to a mailbox
imap_mime_header_decode    Decode MIME header elements
imap_msgno    Gets the message sequence number for the given UID
imap_num_msg    Gets the number of messages in the current mailbox
imap_num_recent    Gets the number of recent messages in current mailbox
imap_open    Open an IMAP stream to a mailbox
imap_ping    Check if the IMAP stream is still active
imap_qprint    Convert a quoted-printable string to an 8 bit string
imap_rename    别名 imap_renamemailbox
imap_renamemailbox    Rename an old mailbox to new mailbox
imap_reopen    Reopen IMAP stream to new mailbox
imap_rfc822_parse_adrlist    Parses an address string
imap_rfc822_parse_headers    Parse mail headers from a string
imap_rfc822_write_address    Returns a properly formatted email address given the mailbox, host, and personal info
imap_savebody    Save a specific body section to a file
imap_scan    别名 imap_listscan
imap_scanmailbox    别名 imap_listscan
imap_search    This function returns an array of messages matching the given search criteria
imap_setacl    Sets the ACL for a given mailbox
imap_setflag_full    Sets flags on messages
imap_set_quota    Sets a quota for a given mailbox
imap_sort    Gets and sort messages
imap_status    Returns status information on a mailbox
imap_subscribe    Subscribe to a mailbox
imap_thread    Returns a tree of threaded message
imap_timeout    Set or fetch imap timeout
imap_uid    This function returns the UID for the given message sequence number
imap_undelete    Unmark the message which is marked deleted
imap_unsubscribe    Unsubscribe from a mailbox
imap_utf7_decode    Decodes a modified UTF-7 encoded string
imap_utf7_encode    Converts ISO-8859-1 string to modified UTF-7 text
imap_utf8    Converts MIME-encoded text to UTF-8
implode    将一个一维数组的值转化为字符串
import_request_variables    将 GET／POST／Cookie 变量导入到全局作用域中
inclued_get_data    Get the inclued data
inet_ntop    Converts a packed internet address to a human readable representation
inet_pton    Converts a human readable IP address to its packed in_addr representation
ingres_autocommit    Switch autocommit on or off
ingres_autocommit_state    Test if the connection is using autocommit
ingres_charset    Returns the installation character set
ingres_close    Close an Ingres database connection
ingres_commit    Commit a transaction
ingres_connect    Open a connection to an Ingres database
ingres_cursor    Get a cursor name for a given result resource
ingres_errno    Get the last Ingres error number generated
ingres_error    Get a meaningful error message for the last error generated
ingres_errsqlstate    Get the last SQLSTATE error code generated
ingres_escape_string    Escape special characters for use in a query
ingres_execute    Execute a prepared query
ingres_fetch_array    Fetch a row of result into an array
ingres_fetch_assoc    Fetch a row of result into an associative array
ingres_fetch_object    Fetch a row of result into an object
ingres_fetch_proc_return    Get the return value from a procedure call
ingres_fetch_row    Fetch a row of result into an enumerated array
ingres_field_length    Get the length of a field
ingres_field_name    Get the name of a field in a query result
ingres_field_nullable    Test if a field is nullable
ingres_field_precision    Get the precision of a field
ingres_field_scale    Get the scale of a field
ingres_field_type    Get the type of a field in a query result
ingres_free_result    Free the resources associated with a result identifier
ingres_next_error    Get the next Ingres error
ingres_num_fields    Get the number of fields returned by the last query
ingres_num_rows    Get the number of rows affected or returned by a query
ingres_pconnect    Open a persistent connection to an Ingres database
ingres_prepare    Prepare a query for later execution
ingres_query    Send an SQL query to Ingres
ingres_result_seek    Set the row position before fetching data
ingres_rollback    Roll back a transaction
ingres_set_environment    Set environment features controlling output options
ingres_unbuffered_query    Send an unbuffered SQL query to Ingres
ini_alter    别名 ini_set
ini_get    获取一个配置选项的值
ini_get_all    获取所有配置选项
ini_restore    恢复配置选项的值
ini_set    为一个配置选项设置值
inotify_add_watch    Add a watch to an initialized inotify instance
inotify_init    Initialize an inotify instance
inotify_queue_len    Return a number upper than zero if there are pending events
inotify_read    Read events from an inotify instance
inotify_rm_watch    Remove an existing watch from an inotify instance
intdiv    Integer division
interface_exists    检查接口是否已被定义
intl_error_name    Get symbolic name for a given error code
intl_get_error_code    Get the last error code
intl_get_error_message    Get description of the last error
intl_is_failure    Check whether the given error code indicates failure
intval    获取变量的整数值
in_array    检查数组中是否存在某个值
ip2long    将一个IPV4的字符串互联网协议转换成数字格式
iptcembed    将二进制 IPTC 数据嵌入到一幅 JPEG 图像中
iptcparse    将二进制 IPTC 块解析为单个标记
isset    检测变量是否设置
is_a    如果对象属于该类或该类是此对象的父类则返回 TRUE
is_array    检测变量是否是数组
is_bool    检测变量是否是布尔型
is_callable    检测参数是否为合法的可调用结构
is_dir    判断给定文件名是否是一个目录
is_double    is_float 的别名
is_executable    判断给定文件名是否可执行
is_file    判断给定文件名是否为一个正常的文件
is_finite    判断是否为有限值
is_float    检测变量是否是浮点型
is_infinite    判断是否为无限值
is_int    检测变量是否是整数
is_integer    is_int 的别名
is_link    判断给定文件名是否为一个符号连接
is_long    is_int 的别名
is_nan    判断是否为合法数值
is_null    检测变量是否为 NULL
is_numeric    检测变量是否为数字或数字字符串
is_object    检测变量是否是一个对象
is_readable    判断给定文件名是否可读
is_real    is_float 的别名
is_resource    检测变量是否为资源类型
is_scalar    检测变量是否是一个标量
is_soap_fault    Checks if a SOAP call has failed
is_string    检测变量是否是字符串
is_subclass_of    如果此对象是该类的子类，则返回 TRUE
is_tainted    Checks whether a string is tainted
is_uploaded_file    判断文件是否是通过 HTTP POST 上传的
is_writable    判断给定的文件名是否可写
is_writeable    is_writable 的别名
iterator_apply    为迭代器中每个元素调用一个用户自定义函数
iterator_count    计算迭代器中元素的个数

iterator_to_array    将迭代器中的元素拷贝到数组

j
函数    说明
JDDayOfWeek    返回星期的日期
JDMonthName    返回月份的名称
JDToFrench    转变一个Julian Day计数到French Republican历法的日期
JDToGregorian    转变一个Julian Day计数为Gregorian历法日期
jdtojewish    转换一个julian天数为Jewish历法的日期
JDToJulian    转变一个Julian Day计数到Julian历法的日期
jdtounix    转变Julian Day计数为一个Unix时间戳
JewishToJD    转变一个Jewish历法的日期为一个Julian Day计数
join    别名 implode
jpeg2wbmp    将 JPEG 图像文件转换为 WBMP 图像文件
json_decode    对 JSON 格式的字符串进行编码
json_encode    对变量进行 JSON 编码
json_last_error    返回最后发生的错误
json_last_error_msg    Returns the error string of the last json_encode() or json_decode() call
judy_type    Return the type of a Judy array
judy_version    Return or print the current PHP Judy version
JulianToJD    转变一个Julian历法的日期为Julian Day计数
k
函数    说明
kadm5_chpass_principal    Changes the principal’s password
kadm5_create_principal    Creates a kerberos principal with the given parameters
kadm5_delete_principal    Deletes a kerberos principal
kadm5_destroy    Closes the connection to the admin server and releases all related resources
kadm5_flush    Flush all changes to the Kerberos database
kadm5_get_policies    Gets all policies from the Kerberos database
kadm5_get_principal    Gets the principal’s entries from the Kerberos database
kadm5_get_principals    Gets all principals from the Kerberos database
kadm5_init_with_password    Opens a connection to the KADM5 library
kadm5_modify_principal    Modifies a kerberos principal with the given parameters
key    从关联数组中取得键名
key_exists    别名 array_key_exists
krsort    对数组按照键名逆向排序

ksort    对数组按照键名排序

L
函数    说明
lcfirst    使一个字符串的第一个字符小写
lcg_value    组合线性同余发生器
lchgrp    Changes group ownership of symlink
lchown    Changes user ownership of symlink
ldap_8859_to_t61    Translate 8859 characters to t61 characters
ldap_add    Add entries to LDAP directory
ldap_bind    绑定 LDAP 目录
ldap_close    别名 ldap_unbind
ldap_compare    Compare value of attribute found in entry specified with DN
ldap_connect    Connect to an LDAP server
ldap_control_paged_result    Send LDAP pagination control
ldap_control_paged_result_response    Retrieve the LDAP pagination cookie
ldap_count_entries    Count the number of entries in a search
ldap_delete    Delete an entry from a directory
ldap_dn2ufn    Convert DN to User Friendly Naming format
ldap_err2str    Convert LDAP error number into string error message
ldap_errno    Return the LDAP error number of the last LDAP command
ldap_error    Return the LDAP error message of the last LDAP command
ldap_escape    Escape a string for use in an LDAP filter or DN
ldap_explode_dn    Splits DN into its component parts
ldap_first_attribute    Return first attribute
ldap_first_entry    Return first result id
ldap_first_reference    Return first reference
ldap_free_result    Free result memory
ldap_get_attributes    Get attributes from a search result entry
ldap_get_dn    Get the DN of a result entry
ldap_get_entries    Get all result entries
ldap_get_option    Get the current value for given option
ldap_get_values    Get all values from a result entry
ldap_get_values_len    Get all binary values from a result entry
ldap_list    Single-level search
ldap_modify    Modify an LDAP entry
ldap_modify_batch    Batch and execute modifications on an LDAP entry
ldap_mod_add    Add attribute values to current attributes
ldap_mod_del    Delete attribute values from current attributes
ldap_mod_replace    Replace attribute values with new ones
ldap_next_attribute    Get the next attribute in result
ldap_next_entry    Get next result entry
ldap_next_reference    Get next reference
ldap_parse_reference    Extract information from reference entry
ldap_parse_result    Extract information from result
ldap_read    Read an entry
ldap_rename    Modify the name of an entry
ldap_sasl_bind    Bind to LDAP directory using SASL
ldap_search    Search LDAP tree
ldap_set_option    Set the value of the given option
ldap_set_rebind_proc    Set a callback function to do re-binds on referral chasing
ldap_sort    Sort LDAP result entries
ldap_start_tls    Start TLS
ldap_t61_to_8859    Translate t61 characters to 8859 characters
ldap_unbind    Unbind from LDAP directory
levenshtein    计算两个字符串之间的编辑距离
libxml_clear_errors    Clear libxml error buffer
libxml_disable_entity_loader    Disable the ability to load external entities
libxml_get_errors    Retrieve array of errors
libxml_get_last_error    Retrieve last error from libxml
libxml_set_external_entity_loader    Changes the default external entity loader
libxml_set_streams_context    Set the streams context for the next libxml document load or write
libxml_use_internal_errors    Disable libxml errors and allow user to fetch error information as needed
link    建立一个硬连接
linkinfo    获取一个连接的信息
list    把数组中的值赋给一些变量
localeconv    Get numeric formatting information
localtime    取得本地时间
log    自然对数
log1p    返回 log(1 + number)，甚至当 number 的值接近零也能计算出准确结果
log10    以 10 为底的对数
long2ip    Converts an long integer address into a string in (IPv4) Internet standard dotted format
lstat    给出一个文件或符号连接的信息
ltrim    删除字符串开头的空白字符（或其他字符）
lzf_compress    LZF compression
lzf_decompress    LZF decompression
lzf_optimized_for    Determines what LZF extension was optimized for

m
函数    说明
magic_quotes_runtime    别名 set_magic_quotes_runtime
mail    发送邮件
mailparse_determine_best_xfer_encoding    Gets the best way of encoding
mailparse_msg_create    Create a mime mail resource
mailparse_msg_extract_part    Extracts/decodes a message section
mailparse_msg_extract_part_file    Extracts/decodes a message section
mailparse_msg_extract_whole_part_file    Extracts a message section including headers without decoding the transfer encoding
mailparse_msg_free    Frees a MIME resource
mailparse_msg_get_part    Returns a handle on a given section in a mimemessage
mailparse_msg_get_part_data    Returns an associative array of info about the message
mailparse_msg_get_structure    Returns an array of mime section names in the supplied message
mailparse_msg_parse    Incrementally parse data into buffer
mailparse_msg_parse_file    Parses a file
mailparse_rfc822_parse_addresses    Parse RFC 822 compliant addresses
mailparse_stream_encode    Streams data from source file pointer, apply encoding and write to destfp
mailparse_uudecode_all    Scans the data from fp and extract each embedded uuencoded file
main    虚拟的main
max    找出最大值
maxdb_affected_rows    Gets the number of affected rows in a previous MaxDB operation
maxdb_autocommit    Turns on or off auto-commiting database modifications
maxdb_bind_param    别名 maxdb_stmt_bind_param
maxdb_bind_result    别名 maxdb_stmt_bind_result
maxdb_change_user    Changes the user of the specified database connection
maxdb_character_set_name    Returns the default character set for the database connection
maxdb_client_encoding    别名 maxdb_character_set_name
maxdb_close    Closes a previously opened database connection
maxdb_close_long_data    别名 maxdb_stmt_close_long_data
maxdb_commit    Commits the current transaction
maxdb_connect    Open a new connection to the MaxDB server
maxdb_connect_errno    Returns the error code from last connect call
maxdb_connect_error    Returns a string description of the last connect error
maxdb_data_seek    Adjusts the result pointer to an arbitary row in the result
maxdb_debug    Performs debugging operations
maxdb_disable_reads_from_master    Disable reads from master
maxdb_disable_rpl_parse    Disable RPL parse
maxdb_dump_debug_info    Dump debugging information into the log
maxdb_embedded_connect    Open a connection to an embedded MaxDB server
maxdb_enable_reads_from_master    Enable reads from master
maxdb_enable_rpl_parse    Enable RPL parse
maxdb_errno    Returns the error code for the most recent function call
maxdb_error    Returns a string description of the last error
maxdb_escape_string    别名 maxdb_real_escape_string
maxdb_execute    别名 maxdb_stmt_execute
maxdb_fetch    别名 maxdb_stmt_fetch
maxdb_fetch_array    Fetch a result row as an associative, a numeric array, or both
maxdb_fetch_assoc    Fetch a result row as an associative array
maxdb_fetch_field    Returns the next field in the result set
maxdb_fetch_fields    Returns an array of resources representing the fields in a result set
maxdb_fetch_field_direct    Fetch meta-data for a single field
maxdb_fetch_lengths    Returns the lengths of the columns of the current row in the result set
maxdb_fetch_object    Returns the current row of a result set as an object
maxdb_fetch_row    Get a result row as an enumerated array
maxdb_field_count    Returns the number of columns for the most recent query
maxdb_field_seek    Set result pointer to a specified field offset
maxdb_field_tell    Get current field offset of a result pointer
maxdb_free_result    Frees the memory associated with a result
maxdb_get_client_info    Returns the MaxDB client version as a string
maxdb_get_client_version    Get MaxDB client info
maxdb_get_host_info    Returns a string representing the type of connection used
maxdb_get_metadata    别名 maxdb_stmt_result_metadata
maxdb_get_proto_info    Returns the version of the MaxDB protocol used
maxdb_get_server_info    Returns the version of the MaxDB server
maxdb_get_server_version    Returns the version of the MaxDB server as an integer
maxdb_info    Retrieves information about the most recently executed query
maxdb_init    Initializes MaxDB and returns an resource for use with maxdb_real_connect
maxdb_insert_id    Returns the auto generated id used in the last query
maxdb_kill    Disconnects from a MaxDB server
maxdb_master_query    Enforce execution of a query on the master in a master/slave setup
maxdb_more_results    Check if there any more query results from a multi query
maxdb_multi_query    Performs a query on the database
maxdb_next_result    Prepare next result from multi_query
maxdb_num_fields    Get the number of fields in a result
maxdb_num_rows    Gets the number of rows in a result
maxdb_options    Set options
maxdb_param_count    别名 maxdb_stmt_param_count
maxdb_ping    Pings a server connection, or tries to reconnect if the connection has gone down
maxdb_prepare    Prepare an SQL statement for execution
maxdb_query    Performs a query on the database
maxdb_real_connect    Opens a connection to a MaxDB server
maxdb_real_escape_string    Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection
maxdb_real_query    Execute an SQL query
maxdb_report    Enables or disables internal report functions
maxdb_rollback    Rolls back current transaction
maxdb_rpl_parse_enabled    Check if RPL parse is enabled
maxdb_rpl_probe    RPL probe
maxdb_rpl_query_type    Returns RPL query type
maxdb_select_db    Selects the default database for database queries
maxdb_send_long_data    别名 maxdb_stmt_send_long_data
maxdb_send_query    Send the query and return
maxdb_server_end    Shut down the embedded server
maxdb_server_init    Initialize embedded server
maxdb_set_opt    别名 maxdb_options
maxdb_sqlstate    Returns the SQLSTATE error from previous MaxDB operation
maxdb_ssl_set    Used for establishing secure connections using SSL
maxdb_stat    Gets the current system status
maxdb_stmt_affected_rows    Returns the total number of rows changed, deleted, or inserted by the last executed statement
maxdb_stmt_bind_param    Binds variables to a prepared statement as parameters
maxdb_stmt_bind_result    Binds variables to a prepared statement for result storage
maxdb_stmt_close    Closes a prepared statement
maxdb_stmt_close_long_data    Ends a sequence of maxdb_stmt_send_long_data
maxdb_stmt_data_seek    Seeks to an arbitray row in statement result set
maxdb_stmt_errno    Returns the error code for the most recent statement call
maxdb_stmt_error    Returns a string description for last statement error
maxdb_stmt_execute    Executes a prepared Query
maxdb_stmt_fetch    Fetch results from a prepared statement into the bound variables
maxdb_stmt_free_result    Frees stored result memory for the given statement handle
maxdb_stmt_init    Initializes a statement and returns an resource for use with maxdb_stmt_prepare
maxdb_stmt_num_rows    Return the number of rows in statements result set
maxdb_stmt_param_count    Returns the number of parameter for the given statement
maxdb_stmt_prepare    Prepare an SQL statement for execution
maxdb_stmt_reset    Resets a prepared statement
maxdb_stmt_result_metadata    Returns result set metadata from a prepared statement
maxdb_stmt_send_long_data    Send data in blocks
maxdb_stmt_sqlstate    Returns SQLSTATE error from previous statement operation
maxdb_stmt_store_result    Transfers a result set from a prepared statement
maxdb_store_result    Transfers a result set from the last query
maxdb_thread_id    Returns the thread ID for the current connection
maxdb_thread_safe    Returns whether thread safety is given or not
maxdb_use_result    Initiate a result set retrieval
maxdb_warning_count    Returns the number of warnings from the last query for the given link
mb_check_encoding    检查字符串在指定的编码里是否有效
mb_convert_case    对字符串进行大小写转换
mb_convert_encoding    转换字符的编码
mb_convert_kana    Convert “kana” one from another (“zen-kaku”, “han-kaku” and more)
mb_convert_variables    转换一个或多个变量的字符编码
mb_decode_mimeheader    解码 MIME 头字段中的字符串
mb_decode_numericentity    根据 HTML 数字字符串解码成字符
mb_detect_encoding    检测字符的编码
mb_detect_order    设置/获取 字符编码的检测顺序
mb_encode_mimeheader    为 MIME 头编码字符串
mb_encode_numericentity    Encode character to HTML numeric string reference
mb_encoding_aliases    Get aliases of a known encoding type
mb_ereg    Regular expression match with multibyte support
mb_eregi    Regular expression match ignoring case with multibyte support
mb_eregi_replace    Replace regular expression with multibyte support ignoring case
mb_ereg_match    Regular expression match for multibyte string
mb_ereg_replace    Replace regular expression with multibyte support
mb_ereg_replace_callback    Perform a regular expresssion seach and replace with multibyte support using a callback
mb_ereg_search    Multibyte regular expression match for predefined multibyte string
mb_ereg_search_getpos    Returns start point for next regular expression match
mb_ereg_search_getregs    Retrieve the result from the last multibyte regular expression match
mb_ereg_search_init    Setup string and regular expression for a multibyte regular expression match
mb_ereg_search_pos    Returns position and length of a matched part of the multibyte regular expression for a predefined multibyte string
mb_ereg_search_regs    Returns the matched part of a multibyte regular expression
mb_ereg_search_setpos    Set start point of next regular expression match
mb_get_info    获取 mbstring 的内部设置
mb_http_input    检测 HTTP 输入字符编码
mb_http_output    设置/获取 HTTP 输出字符编码
mb_internal_encoding    设置/获取内部字符编码
mb_language    设置/获取当前的语言
mb_list_encodings    返回所有支持编码的数组
mb_output_handler    在输出缓冲中转换字符编码的回调函数
mb_parse_str    解析 GET/POST/COOKIE 数据并设置全局变量
mb_preferred_mime_name    获取 MIME 字符串
mb_regex_encoding    Set/Get character encoding for multibyte regex
mb_regex_set_options    Set/Get the default options for mbregex functions
mb_send_mail    发送编码过的邮件
mb_split    使用正则表达式分割多字节字符串
mb_strcut    获取字符的一部分
mb_strimwidth    获取按指定宽度截断的字符串
mb_stripos    大小写不敏感地查找字符串在另一个字符串中首次出现的位置
mb_stristr    大小写不敏感地查找字符串在另一个字符串里的首次出现
mb_strlen    获取字符串的长度
mb_strpos    查找字符串在另一个字符串中首次出现的位置
mb_strrchr    查找指定字符在另一个字符串中最后一次的出现
mb_strrichr    大小写不敏感地查找指定字符在另一个字符串中最后一次的出现
mb_strripos    大小写不敏感地在字符串中查找一个字符串最后出现的位置
mb_strrpos    查找字符串在一个字符串中最后出现的位置
mb_strstr    查找字符串在另一个字符串里的首次出现
mb_strtolower    使字符串小写
mb_strtoupper    使字符串大写
mb_strwidth    返回字符串的宽度
mb_substitute_character    设置/获取替代字符
mb_substr    获取字符串的部分
mb_substr_count    统计字符串出现的次数
mcrypt_cbc    以 CBC 模式加解密数据
mcrypt_cfb    以 CFB 模式加解密数据
mcrypt_create_iv    从随机源创建初始向量
mcrypt_decrypt    使用给定参数解密密文
mcrypt_ecb    已废弃：使用 ECB 模式加解密数据
mcrypt_encrypt    使用给定参数加密明文
mcrypt_enc_get_algorithms_name    返回打开的算法名称
mcrypt_enc_get_block_size    返回打开的算法的分组大小
mcrypt_enc_get_iv_size    返回打开的算法的初始向量大小
mcrypt_enc_get_key_size    返回打开的模式所能支持的最长密钥
mcrypt_enc_get_modes_name    返回打开的模式的名称
mcrypt_enc_get_supported_key_sizes    以数组方式返回打开的算法所支持的密钥长度
mcrypt_enc_is_block_algorithm    检测打开模式的算法是否为分组算法
mcrypt_enc_is_block_algorithm_mode    检测打开的模式是否支持分组加密
mcrypt_enc_is_block_mode    检测打开的模式是否以分组方式输出
mcrypt_enc_self_test    在打开的模块上进行自检
mcrypt_generic    加密数据
mcrypt_generic_deinit    对加密模块进行清理工作
mcrypt_generic_end    终止加密
mcrypt_generic_init    初始化加密所需的缓冲区
mcrypt_get_block_size    获得加密算法的分组大小
mcrypt_get_cipher_name    获取加密算法名称
mcrypt_get_iv_size    返回指定算法/模式组合的初始向量大小
mcrypt_get_key_size    获取指定加密算法的密钥大小
mcrypt_list_algorithms    获取支持的加密算法
mcrypt_list_modes    获取所支持的模式
mcrypt_module_close    关闭加密模块
mcrypt_module_get_algo_block_size    返回指定算法的分组大小
mcrypt_module_get_algo_key_size    获取打开模式所支持的最大密钥大小
mcrypt_module_get_supported_key_sizes    以数组形式返回打开的算法所支持的密钥大小
mcrypt_module_is_block_algorithm    检测指定算法是否为分组加密算法
mcrypt_module_is_block_algorithm_mode    返回指定模块是否是分组加密模式
mcrypt_module_is_block_mode    检测指定模式是否以分组方式输出
mcrypt_module_open    打开算法和模式对应的模块
mcrypt_module_self_test    在指定模块上执行自检
mcrypt_ofb    使用 OFB 模式加密/解密数据
md5    计算字符串的 MD5 散列值
md5_file    计算指定文件的 MD5 散列值
mdecrypt_generic    解密数据
memcache_debug    转换调试输出的开/关
memory_get_peak_usage    返回分配给 PHP 内存的峰值
memory_get_usage    返回分配给 PHP 的内存量
metaphone    Calculate the metaphone key of a string
method_exists    检查类的方法是否存在
mhash    Computes hash
mhash_count    Gets the highest available hash ID
mhash_get_block_size    Gets the block size of the specified hash
mhash_get_hash_name    Gets the name of the specified hash
mhash_keygen_s2k    Generates a key
microtime    返回当前 Unix 时间戳和微秒数
mime_content_type    检测文件的 MIME 类型（已废弃）
min    找出最小值
ming_keypress    Returns the action flag for keyPress(char)
ming_setcubicthreshold    Set cubic threshold
ming_setscale    Set the global scaling factor.
ming_setswfcompression    Sets the SWF output compression
ming_useconstants    Use constant pool
ming_useswfversion    Sets the SWF version
mkdir    新建目录
mktime    取得一个日期的 Unix 时间戳
money_format    Formats a number as a currency string
MongoDB context options    MongoDB context option listing
MongoDB\BSON\fromJSON    Returns the BSON representation of a JSON value
MongoDB\BSON\fromPHP    Returns the BSON representation of a PHP value
MongoDB\BSON\toJSON    Returns the JSON representation of a BSON value
MongoDB\BSON\toPHP    Returns the PHP representation of a BSON value
move_uploaded_file    将上传的文件移动到新位置
mqseries_back    MQSeries MQBACK
mqseries_begin    MQseries MQBEGIN
mqseries_close    MQSeries MQCLOSE
mqseries_cmit    MQSeries MQCMIT
mqseries_conn    MQSeries MQCONN
mqseries_connx    MQSeries MQCONNX
mqseries_disc    MQSeries MQDISC
mqseries_get    MQSeries MQGET
mqseries_inq    MQSeries MQINQ
mqseries_open    MQSeries MQOPEN
mqseries_put    MQSeries MQPUT
mqseries_put1    MQSeries MQPUT1
mqseries_set    MQSeries MQSET
mqseries_strerror    Returns the error message corresponding to a result code (MQRC).
msession_connect    Connect to msession server
msession_count    Get session count
msession_create    Create a session
msession_destroy    Destroy a session
msession_disconnect    Close connection to msession server
msession_find    Find all sessions with name and value
msession_get    Get value from session
msession_get_array    Get array of msession variables
msession_get_data    Get data session unstructured data
msession_inc    Increment value in session
msession_list    List all sessions
msession_listvar    List sessions with variable
msession_lock    Lock a session
msession_plugin    Call an escape function within the msession personality plugin
msession_randstr    Get random string
msession_set    Set value in session
msession_set_array    Set msession variables from an array
msession_set_data    Set data session unstructured data
msession_timeout    Set/get session timeout
msession_uniq    Get unique id
msession_unlock    Unlock a session
msg_get_queue    Create or attach to a message queue
msg_queue_exists    Check whether a message queue exists
msg_receive    Receive a message from a message queue
msg_remove_queue    Destroy a message queue
msg_send    Send a message to a message queue
msg_set_queue    Set information in the message queue data structure
msg_stat_queue    Returns information from the message queue data structure
msql    Alias of msql_db_query
msql_affected_rows    Returns number of affected rows
msql_close    Close mSQL connection
msql_connect    Open mSQL connection
msql_createdb    别名 msql_create_db
msql_create_db    Create mSQL database
msql_data_seek    Move internal row pointer
msql_dbname    别名 msql_result
msql_db_query    Send mSQL query
msql_drop_db    Drop (delete) mSQL database
msql_error    Returns error message of last msql call
msql_fetch_array    Fetch row as array
msql_fetch_field    Get field information
msql_fetch_object    Fetch row as object
msql_fetch_row    Get row as enumerated array
msql_fieldflags    Alias of msql_field_flags
msql_fieldlen    Alias of msql_field_len
msql_fieldname    Alias of msql_field_name
msql_fieldtable    Alias of msql_field_table
msql_fieldtype    Alias of msql_field_type
msql_field_flags    Get field flags
msql_field_len    Get field length
msql_field_name    Get the name of the specified field in a result
msql_field_seek    Set field offset
msql_field_table    Get table name for field
msql_field_type    Get field type
msql_free_result    Free result memory
msql_list_dbs    List mSQL databases on server
msql_list_fields    List result fields
msql_list_tables    List tables in an mSQL database
msql_numfields    Alias of msql_num_fields
msql_numrows    Alias of msql_num_rows
msql_num_fields    Get number of fields in result
msql_num_rows    Get number of rows in result
msql_pconnect    Open persistent mSQL connection
msql_query    Send mSQL query
msql_regcase    Alias of sql_regcase
msql_result    Get result data
msql_select_db    Select mSQL database
msql_tablename    Alias of msql_result
mssql_bind    Adds a parameter to a stored procedure or a remote stored procedure
mssql_close    关闭MS SQL Server链接
mssql_connect    打开MS SQL server链接
mssql_data_seek    Moves internal row pointer
mssql_execute    Executes a stored procedure on a MS SQL server database
mssql_fetch_array    Fetch a result row as an associative array, a numeric array, or both
mssql_fetch_assoc    Returns an associative array of the current row in the result
mssql_fetch_batch    Returns the next batch of records
mssql_fetch_field    Get field information
mssql_fetch_object    Fetch row as object
mssql_fetch_row    Get row as enumerated array
mssql_field_length    Get the length of a field
mssql_field_name    Get the name of a field
mssql_field_seek    Seeks to the specified field offset
mssql_field_type    Gets the type of a field
mssql_free_result    Free result memory
mssql_free_statement    Free statement memory
mssql_get_last_message    Returns the last message from the server
mssql_guid_string    Converts a 16 byte binary GUID to a string
mssql_init    Initializes a stored procedure or a remote stored procedure
mssql_min_error_severity    Sets the minimum error severity
mssql_min_message_severity    Sets the minimum message severity
mssql_next_result    Move the internal result pointer to the next result
mssql_num_fields    Gets the number of fields in result
mssql_num_rows    Gets the number of rows in result
mssql_pconnect    Open persistent MS SQL connection
mssql_query    Send MS SQL query
mssql_result    Get result data
mssql_rows_affected    Returns the number of records affected by the query
mssql_select_db    Select MS SQL database
mt_getrandmax    显示随机数的最大可能值
mt_rand    生成更好的随机数
mt_srand    播下一个更好的随机数发生器种子
mysqli_bind_param    mysqli_stmt_bind_param的别名
mysqli_bind_result    mysqli_stmt_bind_result的别名
mysqli_client_encoding    mysqli_character_set_name的别名
mysqli_disable_rpl_parse    禁用RPL解析
mysqli_enable_reads_from_master    开启从主机读取
mysqli_enable_rpl_parse    开启RPL解析
mysqli_escape_string    别名 mysqli_real_escape_string
mysqli_execute    mysqli_stmt_execute的别名
mysqli_fetch    mysqli_stmt_fetch的别名。
mysqli_get_cache_stats    返回客户端Zval缓存统计信息
mysqli_get_client_stats    Returns client per-process statistics
mysqli_get_client_version    Returns the MySQL client version as an integer
mysqli_get_links_stats    Return information about open and cached links
mysqli_get_metadata    mysqli_stmt_result_metadata的别名
mysqli_master_query    在主/从机制中强制在主机中执行一个查询
mysqli_param_count    mysqli_stmt_param_count的别名
mysqli_report    开启或禁用（Mysql）内部（错误）报告函数
mysqli_rpl_parse_enabled    检查是否开启了RPL解析
mysqli_rpl_probe    RPL探测
mysqli_send_long_data    mysqli_stmt_send_long_data的别名
mysqli_set_opt    mysqli_options的别名
mysqli_slave_query    在主/从机制中强制在从机上执行一个查询
mysqlnd_memcache_get_config    Returns information about the plugin configuration
mysqlnd_memcache_set    Associate a MySQL connection with a Memcache connection
mysqlnd_ms_dump_servers    Returns a list of currently configured servers
mysqlnd_ms_fabric_select_global    Switch to global sharding server for a given table
mysqlnd_ms_fabric_select_shard    Switch to shard
mysqlnd_ms_get_last_gtid    返回最后的全局同步 ID (GTID)
mysqlnd_ms_get_last_used_connection    Returns an array which describes the last used connection
mysqlnd_ms_get_stats    Returns query distribution and connection statistics
mysqlnd_ms_match_wild    Finds whether a table name matches a wildcard pattern or not
mysqlnd_ms_query_is_select    查询给定的 SQL 会发送给 master、slave 还是最后使用的 MySQL server 执行。
mysqlnd_ms_set_qos    Sets the quality of service needed from the cluster
mysqlnd_ms_set_user_pick_server    Sets a callback for user-defined read/write splitting
mysqlnd_ms_xa_begin    Starts a distributed/XA transaction among MySQL servers
mysqlnd_ms_xa_commit    Commits a distributed/XA transaction among MySQL servers
mysqlnd_ms_xa_gc    Garbage collects unfinished XA transactions after severe errors
mysqlnd_ms_xa_rollback    Rolls back a distributed/XA transaction among MySQL servers
mysqlnd_qc_clear_cache    Flush all cache contents
mysqlnd_qc_get_available_handlers    Returns a list of available storage handler
mysqlnd_qc_get_cache_info    Returns information on the current handler, the number of cache entries and cache entries, if available
mysqlnd_qc_get_core_stats    Statistics collected by the core of the query cache
mysqlnd_qc_get_normalized_query_trace_log    Returns a normalized query trace log for each query inspected by the query cache
mysqlnd_qc_get_query_trace_log    Returns a backtrace for each query inspected by the query cache
mysqlnd_qc_set_cache_condition    Set conditions for automatic caching
mysqlnd_qc_set_is_select    Installs a callback which decides whether a statement is cached
mysqlnd_qc_set_storage_handler    Change current storage handler
mysqlnd_qc_set_user_handlers    Sets the callback functions for a user-defined procedural storage handler
mysqlnd_uh_convert_to_mysqlnd    Converts a MySQL connection handle into a mysqlnd connection handle
mysqlnd_uh_set_connection_proxy    Installs a proxy for mysqlnd connections
mysqlnd_uh_set_statement_proxy    Installs a proxy for mysqlnd statements
mysql_affected_rows    取得前一次 MySQL 操作所影响的记录行数
mysql_client_encoding    返回字符集的名称
mysql_close    关闭 MySQL 连接
mysql_connect    打开一个到 MySQL 服务器的连接
mysql_create_db    新建一个 MySQL 数据库
mysql_data_seek    移动内部结果的指针
mysql_db_name    取得结果数据
mysql_db_query    发送一条 MySQL 查询
mysql_drop_db    丢弃（删除）一个 MySQL 数据库
mysql_errno    返回上一个 MySQL 操作中的错误信息的数字编码
mysql_error    返回上一个 MySQL 操作产生的文本错误信息
mysql_escape_string    转义一个字符串用于 mysql_query
mysql_fetch_array    从结果集中取得一行作为关联数组，或数字数组，或二者兼有
mysql_fetch_assoc    从结果集中取得一行作为关联数组
mysql_fetch_field    从结果集中取得列信息并作为对象返回
mysql_fetch_lengths    取得结果集中每个输出的长度
mysql_fetch_object    从结果集中取得一行作为对象
mysql_fetch_row    从结果集中取得一行作为枚举数组
mysql_field_flags    从结果中取得和指定字段关联的标志
mysql_field_len    返回指定字段的长度
mysql_field_name    取得结果中指定字段的字段名
mysql_field_seek    将结果集中的指针设定为制定的字段偏移量
mysql_field_table    取得指定字段所在的表名
mysql_field_type    取得结果集中指定字段的类型
mysql_free_result    释放结果内存
mysql_get_client_info    取得 MySQL 客户端信息
mysql_get_host_info    取得 MySQL 主机信息
mysql_get_proto_info    取得 MySQL 协议信息
mysql_get_server_info    取得 MySQL 服务器信息
mysql_info    取得最近一条查询的信息
mysql_insert_id    取得上一步 INSERT 操作产生的 ID
mysql_list_dbs    列出 MySQL 服务器中所有的数据库
mysql_list_fields    列出 MySQL 结果中的字段
mysql_list_processes    列出 MySQL 进程
mysql_list_tables    列出 MySQL 数据库中的表
mysql_num_fields    取得结果集中字段的数目
mysql_num_rows    取得结果集中行的数目
mysql_pconnect    打开一个到 MySQL 服务器的持久连接
mysql_ping    Ping 一个服务器连接，如果没有连接则重新连接
mysql_query    发送一条 MySQL 查询
mysql_real_escape_string    转义 SQL 语句中使用的字符串中的特殊字符，并考虑到连接的当前字符集
mysql_result    取得结果数据
mysql_select_db    选择 MySQL 数据库
mysql_set_charset    设置客户端的字符集
mysql_stat    取得当前系统状态
mysql_tablename    取得表名
mysql_thread_id    返回当前线程的 ID
mysql_unbuffered_query    向 MySQL 发送一条 SQL 查询，并不获取和缓存结果的行
m_checkstatus    Check to see if a transaction has completed
m_completeauthorizations    Number of complete authorizations in queue, returning an array of their identifiers
m_connect    Establish the connection to MCVE
m_connectionerror    Get a textual representation of why a connection failed
m_deletetrans    Delete specified transaction from MCVE_CONN structure
m_destroyconn    Destroy the connection and MCVE_CONN structure
m_destroyengine    Free memory associated with IP/SSL connectivity
m_getcell    Get a specific cell from a comma delimited response by column name
m_getcellbynum    Get a specific cell from a comma delimited response by column number
m_getcommadelimited    Get the RAW comma delimited data returned from MCVE
m_getheader    Get the name of the column in a comma-delimited response
m_initconn    Create and initialize an MCVE_CONN structure
m_initengine    Ready the client for IP/SSL Communication
m_iscommadelimited    Checks to see if response is comma delimited
m_maxconntimeout    The maximum amount of time the API will attempt a connection to MCVE
m_monitor    Perform communication with MCVE (send/receive data) Non-blocking
m_numcolumns    Number of columns returned in a comma delimited response
m_numrows    Number of rows returned in a comma delimited response
m_parsecommadelimited    Parse the comma delimited response so m_getcell, etc will work
m_responsekeys    Returns array of strings which represents the keys that can be used for response parameters on this transaction
m_responseparam    Get a custom response parameter
m_returnstatus    Check to see if the transaction was successful
m_setblocking    Set blocking/non-blocking mode for connection
m_setdropfile    Set the connection method to Drop-File
m_setip    Set the connection method to IP
m_setssl    Set the connection method to SSL
m_setssl_cafile    Set SSL CA (Certificate Authority) file for verification of server certificate
m_setssl_files    Set certificate key files and certificates if server requires client certificate verification
m_settimeout    Set maximum transaction time (per trans)
m_sslcert_gen_hash    Generate hash for SSL client certificate verification
m_transactionssent    Check to see if outgoing buffer is clear
m_transinqueue    Number of transactions in client-queue
m_transkeyval    Add key/value pair to a transaction. Replaces deprecated transparam()
m_transnew    Start a new transaction
m_transsend    Finalize and send the transaction
m_uwait    Wait x microsecs
m_validateidentifier    Whether or not to validate the passed identifier on any transaction it is passed to
m_verifyconnection    Set whether or not to PING upon connect to verify connection

m_verifysslcert    Set whether or not to verify the server ssl certificate

n
函数    说明
natcasesort    用“自然排序”算法对数组进行不区分大小写字母的排序
natsort    用“自然排序”算法对数组排序
ncurses_addch    Add character at current position and advance cursor
ncurses_addchnstr    Add attributed string with specified length at current position
ncurses_addchstr    Add attributed string at current position
ncurses_addnstr    Add string with specified length at current position
ncurses_addstr    Output text at current position
ncurses_assume_default_colors    Define default colors for color 0
ncurses_attroff    Turn off the given attributes
ncurses_attron    Turn on the given attributes
ncurses_attrset    Set given attributes
ncurses_baudrate    Returns baudrate of terminal
ncurses_beep    Let the terminal beep
ncurses_bkgd    Set background property for terminal screen
ncurses_bkgdset    Control screen background
ncurses_border    Draw a border around the screen using attributed characters
ncurses_bottom_panel    Moves a visible panel to the bottom of the stack
ncurses_can_change_color    Checks if terminal color definitions can be changed
ncurses_cbreak    Switch off input buffering
ncurses_clear    Clear screen
ncurses_clrtobot    Clear screen from current position to bottom
ncurses_clrtoeol    Clear screen from current position to end of line
ncurses_color_content    Retrieves RGB components of a color
ncurses_color_set    Set active foreground and background colors
ncurses_curs_set    Set cursor state
ncurses_define_key    Define a keycode
ncurses_def_prog_mode    Saves terminals (program) mode
ncurses_def_shell_mode    Saves terminals (shell) mode
ncurses_delay_output    Delay output on terminal using padding characters
ncurses_delch    Delete character at current position, move rest of line left
ncurses_deleteln    Delete line at current position, move rest of screen up
ncurses_delwin    Delete a ncurses window
ncurses_del_panel    Remove panel from the stack and delete it (but not the associated window)
ncurses_doupdate    Write all prepared refreshes to terminal
ncurses_echo    Activate keyboard input echo
ncurses_echochar    Single character output including refresh
ncurses_end    Stop using ncurses, clean up the screen
ncurses_erase    Erase terminal screen
ncurses_erasechar    Returns current erase character
ncurses_filter    Set LINES for iniscr() and newterm() to 1
ncurses_flash    Flash terminal screen (visual bell)
ncurses_flushinp    Flush keyboard input buffer
ncurses_getch    Read a character from keyboard
ncurses_getmaxyx    Returns the size of a window
ncurses_getmouse    Reads mouse event
ncurses_getyx    Returns the current cursor position for a window
ncurses_halfdelay    Put terminal into halfdelay mode
ncurses_has_colors    Checks if terminal has color capabilities
ncurses_has_ic    Check for insert- and delete-capabilities
ncurses_has_il    Check for line insert- and delete-capabilities
ncurses_has_key    Check for presence of a function key on terminal keyboard
ncurses_hide_panel    Remove panel from the stack, making it invisible
ncurses_hline    Draw a horizontal line at current position using an attributed character and max. n characters long
ncurses_inch    Get character and attribute at current position
ncurses_init    Initialize ncurses
ncurses_init_color    Define a terminal color
ncurses_init_pair    Define a color pair
ncurses_insch    Insert character moving rest of line including character at current position
ncurses_insdelln    Insert lines before current line scrolling down (negative numbers delete and scroll up)
ncurses_insertln    Insert a line, move rest of screen down
ncurses_insstr    Insert string at current position, moving rest of line right
ncurses_instr    Reads string from terminal screen
ncurses_isendwin    Ncurses is in endwin mode, normal screen output may be performed
ncurses_keyok    Enable or disable a keycode
ncurses_keypad    Turns keypad on or off
ncurses_killchar    Returns current line kill character
ncurses_longname    Returns terminals description
ncurses_meta    Enables/Disable 8-bit meta key information
ncurses_mouseinterval    Set timeout for mouse button clicks
ncurses_mousemask    Sets mouse options
ncurses_mouse_trafo    Transforms coordinates
ncurses_move    Move output position
ncurses_move_panel    Moves a panel so that its upper-left corner is at [startx, starty]
ncurses_mvaddch    Move current position and add character
ncurses_mvaddchnstr    Move position and add attributed string with specified length
ncurses_mvaddchstr    Move position and add attributed string
ncurses_mvaddnstr    Move position and add string with specified length
ncurses_mvaddstr    Move position and add string
ncurses_mvcur    Move cursor immediately
ncurses_mvdelch    Move position and delete character, shift rest of line left
ncurses_mvgetch    Move position and get character at new position
ncurses_mvhline    Set new position and draw a horizontal line using an attributed character and max. n characters long
ncurses_mvinch    Move position and get attributed character at new position
ncurses_mvvline    Set new position and draw a vertical line using an attributed character and max. n characters long
ncurses_mvwaddstr    Add string at new position in window
ncurses_napms    Sleep
ncurses_newpad    Creates a new pad (window)
ncurses_newwin    Create a new window
ncurses_new_panel    Create a new panel and associate it with window
ncurses_nl    Translate newline and carriage return / line feed
ncurses_nocbreak    Switch terminal to cooked mode
ncurses_noecho    Switch off keyboard input echo
ncurses_nonl    Do not translate newline and carriage return / line feed
ncurses_noqiflush    Do not flush on signal characters
ncurses_noraw    Switch terminal out of raw mode
ncurses_pair_content    Retrieves foreground and background colors of a color pair
ncurses_panel_above    Returns the panel above panel
ncurses_panel_below    Returns the panel below panel
ncurses_panel_window    Returns the window associated with panel
ncurses_pnoutrefresh    Copies a region from a pad into the virtual screen
ncurses_prefresh    Copies a region from a pad into the virtual screen
ncurses_putp    Apply padding information to the string and output it
ncurses_qiflush    Flush on signal characters
ncurses_raw    Switch terminal into raw mode
ncurses_refresh    Refresh screen
ncurses_replace_panel    Replaces the window associated with panel
ncurses_resetty    Restores saved terminal state
ncurses_reset_prog_mode    Resets the prog mode saved by def_prog_mode
ncurses_reset_shell_mode    Resets the shell mode saved by def_shell_mode
ncurses_savetty    Saves terminal state
ncurses_scrl    Scroll window content up or down without changing current position
ncurses_scr_dump    Dump screen content to file
ncurses_scr_init    Initialize screen from file dump
ncurses_scr_restore    Restore screen from file dump
ncurses_scr_set    Inherit screen from file dump
ncurses_show_panel    Places an invisible panel on top of the stack, making it visible
ncurses_slk_attr    Returns current soft label key attribute
ncurses_slk_attroff    Turn off the given attributes for soft function-key labels
ncurses_slk_attron    Turn on the given attributes for soft function-key labels
ncurses_slk_attrset    Set given attributes for soft function-key labels
ncurses_slk_clear    Clears soft labels from screen
ncurses_slk_color    Sets color for soft label keys
ncurses_slk_init    Initializes soft label key functions
ncurses_slk_noutrefresh    Copies soft label keys to virtual screen
ncurses_slk_refresh    Copies soft label keys to screen
ncurses_slk_restore    Restores soft label keys
ncurses_slk_set    Sets function key labels
ncurses_slk_touch    Forces output when ncurses_slk_noutrefresh is performed
ncurses_standend    Stop using ‘standout’ attribute
ncurses_standout    Start using ‘standout’ attribute
ncurses_start_color    Initializes color functionality
ncurses_termattrs    Returns a logical OR of all attribute flags supported by terminal
ncurses_termname    Returns terminals (short)-name
ncurses_timeout    Set timeout for special key sequences
ncurses_top_panel    Moves a visible panel to the top of the stack
ncurses_typeahead    Specify different filedescriptor for typeahead checking
ncurses_ungetch    Put a character back into the input stream
ncurses_ungetmouse    Pushes mouse event to queue
ncurses_update_panels    Refreshes the virtual screen to reflect the relations between panels in the stack
ncurses_use_default_colors    Assign terminal default colors to color id -1
ncurses_use_env    Control use of environment information about terminal size
ncurses_use_extended_names    Control use of extended names in terminfo descriptions
ncurses_vidattr    Display the string on the terminal in the video attribute mode
ncurses_vline    Draw a vertical line at current position using an attributed character and max. n characters long
ncurses_waddch    Adds character at current position in a window and advance cursor
ncurses_waddstr    Outputs text at current postion in window
ncurses_wattroff    Turns off attributes for a window
ncurses_wattron    Turns on attributes for a window
ncurses_wattrset    Set the attributes for a window
ncurses_wborder    Draws a border around the window using attributed characters
ncurses_wclear    Clears window
ncurses_wcolor_set    Sets windows color pairings
ncurses_werase    Erase window contents
ncurses_wgetch    Reads a character from keyboard (window)
ncurses_whline    Draws a horizontal line in a window at current position using an attributed character and max. n characters long
ncurses_wmouse_trafo    Transforms window/stdscr coordinates
ncurses_wmove    Moves windows output position
ncurses_wnoutrefresh    Copies window to virtual screen
ncurses_wrefresh    Refresh window on terminal screen
ncurses_wstandend    End standout mode for a window
ncurses_wstandout    Enter standout mode for a window
ncurses_wvline    Draws a vertical line in a window at current position using an attributed character and max. n characters long
newt_bell    Send a beep to the terminal
newt_button    Create a new button
newt_button_bar    This function returns a grid containing the buttons created.
newt_centered_window    Open a centered window of the specified size
newt_checkbox    说明
newt_checkbox_get_value    Retreives value of checkox resource
newt_checkbox_set_flags    Configures checkbox resource
newt_checkbox_set_value    Sets the value of the checkbox
newt_checkbox_tree    说明
newt_checkbox_tree_add_item    Adds new item to the checkbox tree
newt_checkbox_tree_find_item    Finds an item in the checkbox tree
newt_checkbox_tree_get_current    Returns checkbox tree selected item
newt_checkbox_tree_get_entry_value    说明
newt_checkbox_tree_get_multi_selection    说明
newt_checkbox_tree_get_selection    说明
newt_checkbox_tree_multi    说明
newt_checkbox_tree_set_current    说明
newt_checkbox_tree_set_entry    说明
newt_checkbox_tree_set_entry_value    说明
newt_checkbox_tree_set_width    说明
newt_clear_key_buffer    Discards the contents of the terminal’s input buffer without waiting for additional input
newt_cls    说明
newt_compact_button    说明
newt_component_add_callback    说明
newt_component_takes_focus    说明
newt_create_grid    说明
newt_cursor_off    说明
newt_cursor_on    说明
newt_delay    说明
newt_draw_form    说明
newt_draw_root_text    Displays the string text at the position indicated
newt_entry    说明
newt_entry_get_value    说明
newt_entry_set    说明
newt_entry_set_filter    说明
newt_entry_set_flags    说明
newt_finished    Uninitializes newt interface
newt_form    Create a form
newt_form_add_component    Adds a single component to the form
newt_form_add_components    Add several components to the form
newt_form_add_hot_key    说明
newt_form_destroy    Destroys a form
newt_form_get_current    说明
newt_form_run    Runs a form
newt_form_set_background    说明
newt_form_set_height    说明
newt_form_set_size    说明
newt_form_set_timer    说明
newt_form_set_width    说明
newt_form_watch_fd    说明
newt_get_screen_size    Fills in the passed references with the current size of the terminal
newt_grid_add_components_to_form    说明
newt_grid_basic_window    说明
newt_grid_free    说明
newt_grid_get_size    说明
newt_grid_h_close_stacked    说明
newt_grid_h_stacked    说明
newt_grid_place    说明
newt_grid_set_field    说明
newt_grid_simple_window    说明
newt_grid_v_close_stacked    说明
newt_grid_v_stacked    说明
newt_grid_wrapped_window    说明
newt_grid_wrapped_window_at    说明
newt_init    Initialize newt
newt_label    说明
newt_label_set_text    说明
newt_listbox    说明
newt_listbox_append_entry    说明
newt_listbox_clear    说明
newt_listbox_clear_selection    说明
newt_listbox_delete_entry    说明
newt_listbox_get_current    说明
newt_listbox_get_selection    说明
newt_listbox_insert_entry    说明
newt_listbox_item_count    说明
newt_listbox_select_item    说明
newt_listbox_set_current    说明
newt_listbox_set_current_by_key    说明
newt_listbox_set_data    说明
newt_listbox_set_entry    说明
newt_listbox_set_width    说明
newt_listitem    说明
newt_listitem_get_data    说明
newt_listitem_set    说明
newt_open_window    Open a window of the specified size and position
newt_pop_help_line    Replaces the current help line with the one from the stack
newt_pop_window    Removes the top window from the display
newt_push_help_line    Saves the current help line on a stack, and displays the new line
newt_radiobutton    说明
newt_radio_get_current    说明
newt_redraw_help_line    说明
newt_reflow_text    说明
newt_refresh    Updates modified portions of the screen
newt_resize_screen    说明
newt_resume    Resume using the newt interface after calling newt_suspend
newt_run_form    Runs a form
newt_scale    说明
newt_scale_set    说明
newt_scrollbar_set    说明
newt_set_help_callback    说明
newt_set_suspend_callback    Set a callback function which gets invoked when user presses the suspend key
newt_suspend    Tells newt to return the terminal to its initial state
newt_textbox    说明
newt_textbox_get_num_lines    说明
newt_textbox_reflowed    说明
newt_textbox_set_height    说明
newt_textbox_set_text    说明
newt_vertical_scrollbar    说明
newt_wait_for_key    Doesn’t return until a key has been pressed
newt_win_choice    说明
newt_win_entries    说明
newt_win_menu    说明
newt_win_message    说明
newt_win_messagev    说明
newt_win_ternary    说明
next    将数组中的内部指针向前移动一位
ngettext    Plural version of gettext
nl2br    在字符串所有新行之前插入 HTML 换行标记
nl_langinfo    Query language and locale information
nsapi_request_headers    Fetch all HTTP request headers
nsapi_response_headers    Fetch all HTTP response headers
nsapi_virtual    Perform an NSAPI sub-request
nthmac    Obtain a nthmac key (needs 2 arguments)

number_format    以千位分隔符方式格式化一个数字

o
函数    说明
oauth_get_sbs    生成一个签名字符基串
oauth_urlencode    将 URI 编码为 RFC 3986 规范
ob_clean    清空（擦掉）输出缓冲区
ob_deflatehandler    Deflate output handler
ob_end_clean    清空（擦除）缓冲区并关闭输出缓冲
ob_end_flush    冲刷出（送出）输出缓冲区内容并关闭缓冲
ob_etaghandler    ETag output handler
ob_flush    冲刷出（送出）输出缓冲区中的内容
ob_get_clean    得到当前缓冲区的内容并删除当前输出缓。
ob_get_contents    返回输出缓冲区的内容
ob_get_flush    刷出（送出）缓冲区内容，以字符串形式返回内容，并关闭输出缓冲区。
ob_get_length    返回输出缓冲区内容的长度
ob_get_level    返回输出缓冲机制的嵌套级别
ob_get_status    得到所有输出缓冲区的状态
ob_gzhandler    在ob_start中使用的用来压缩输出缓冲区中内容的回调函数。ob_start callback function to gzip output buffer
ob_iconv_handler    以输出缓冲处理程序转换字符编码
ob_implicit_flush    打开/关闭绝对刷送
ob_inflatehandler    Inflate output handler
ob_list_handlers    列出所有使用中的输出处理程序。
ob_start    打开输出控制缓冲
ob_tidyhandler    ob_start callback function to repair the buffer
ocibindbyname    别名 oci_bind_by_name
ocicancel    别名 oci_cancel
ocicolumnisnull    别名 oci_field_is_null
ocicolumnname    别名 oci_field_name
ocicolumnprecision    别名 oci_field_precision
ocicolumnscale    别名 oci_field_scale
ocicolumnsize    别名 oci_field_size
ocicolumntype    别名 oci_field_type
ocicolumntyperaw    别名 oci_field_type_raw
ocicommit    别名 oci_commit
ocidefinebyname    别名 oci_define_by_name
ocierror    别名 oci_error
ociexecute    别名 oci_execute
ocifetch    别名 oci_fetch
ocifetchinto    Obsolete variant of oci_fetch_array, oci_fetch_object, oci_fetch_assoc and oci_fetch_row
ocifetchstatement    别名 oci_fetch_all
ocifreecursor    别名 oci_free_statement
ocifreestatement    别名 oci_free_statement
ociinternaldebug    别名 oci_internal_debug
ocilogoff    别名 oci_close
ocilogon    别名 oci_connect
ocinewcollection    别名 oci_new_collection
ocinewcursor    别名 oci_new_cursor
ocinewdescriptor    别名 oci_new_descriptor
ocinlogon    别名 oci_new_connect
ocinumcols    别名 oci_num_fields
ociparse    别名 oci_parse
ociplogon    别名 oci_pconnect
ociresult    别名 oci_result
ocirollback    别名 oci_rollback
ocirowcount    别名 oci_num_rows
ociserverversion    别名 oci_server_version
ocisetprefetch    别名 oci_set_prefetch
ocistatementtype    别名 oci_statement_type
oci_bind_array_by_name    Binds a PHP array to an Oracle PL/SQL array parameter
oci_bind_by_name    绑定一个 PHP 变量到一个 Oracle 位置标志符
oci_cancel    中断游标读取数据
oci_client_version    Returns the Oracle client library version
oci_close    关闭 Oracle 连接
oci_commit    提交未执行的事务处理
oci_connect    建立一个到 Oracle 服务器的连接
oci_define_by_name    在 SELECT 中使用 PHP 变量作为定义的步骤
oci_error    返回上一个错误
oci_execute    执行一条语句
oci_fetch    Fetches the next row into result-buffer
oci_fetch_all    获取结果数据的所有行到一个数组
oci_fetch_array    Returns the next row from a query as an associative or numeric array
oci_fetch_assoc    Returns the next row from a query as an associative array
oci_fetch_object    Returns the next row from a query as an object
oci_fetch_row    Returns the next row from a query as a numeric array
oci_field_is_null    检查字段是否为 NULL
oci_field_name    返回字段名
oci_field_precision    返回字段精度
oci_field_scale    返回字段范围
oci_field_size    返回字段大小
oci_field_type    返回字段的数据类型
oci_field_type_raw    返回字段的原始 Oracle 数据类型
oci_free_descriptor    Frees a descriptor
oci_free_statement    释放关联于语句或游标的所有资源
oci_get_implicit_resultset    Returns the next child statement resource from a parent statement resource that has Oracle Database 12c Implicit Result Sets
oci_internal_debug    打开或关闭内部调试输出
oci_lob_copy    Copies large object
oci_lob_is_equal    Compares two LOB/FILE locators for equality
oci_new_collection    分配新的 collection 对象
oci_new_connect    建定一个到 Oracle 服务器的新连接
oci_new_cursor    分配并返回一个新的游标（语句句柄）
oci_new_descriptor    初始化一个新的空 LOB 或 FILE 描述符
oci_num_fields    返回结果列的数目
oci_num_rows    返回语句执行后受影响的行数
oci_parse    配置 Oracle 语句预备执行
oci_password_change    修改 Oracle 用户的密码
oci_pconnect    使用一个持久连接连到 Oracle 数据库
oci_result    返回所取得行中字段的值
oci_rollback    回滚未提交的事务
oci_server_version    返回服务器版本信息
oci_set_action    Sets the action name
oci_set_client_identifier    Sets the client identifier
oci_set_client_info    Sets the client information
oci_set_edition    Sets the database edition
oci_set_module_name    Sets the module name
oci_set_prefetch    设置预提取行数
oci_statement_type    返回 OCI 语句的类型
octdec    八进制转换为十进制
odbc_autocommit    Toggle autocommit behaviour
odbc_binmode    Handling of binary column data
odbc_close    Close an ODBC connection
odbc_close_all    Close all ODBC connections
odbc_columnprivileges    Lists columns and associated privileges for the given table
odbc_columns    Lists the column names in specified tables
odbc_commit    Commit an ODBC transaction
odbc_connect    Connect to a datasource
odbc_cursor    Get cursorname
odbc_data_source    Returns information about a current connection
odbc_do    别名 odbc_exec
odbc_error    Get the last error code
odbc_errormsg    Get the last error message
odbc_exec    Prepare and execute an SQL statement
odbc_execute    Execute a prepared statement
odbc_fetch_array    Fetch a result row as an associative array
odbc_fetch_into    Fetch one result row into array
odbc_fetch_object    Fetch a result row as an object
odbc_fetch_row    Fetch a row
odbc_field_len    Get the length (precision) of a field
odbc_field_name    Get the columnname
odbc_field_num    Return column number
odbc_field_precision    别名 odbc_field_len
odbc_field_scale    Get the scale of a field
odbc_field_type    Datatype of a field
odbc_foreignkeys    Retrieves a list of foreign keys
odbc_free_result    Free resources associated with a result
odbc_gettypeinfo    Retrieves information about data types supported by the data source
odbc_longreadlen    Handling of LONG columns
odbc_next_result    Checks if multiple results are available
odbc_num_fields    Number of columns in a result
odbc_num_rows    Number of rows in a result
odbc_pconnect    Open a persistent database connection
odbc_prepare    Prepares a statement for execution
odbc_primarykeys    Gets the primary keys for a table
odbc_procedurecolumns    Retrieve information about parameters to procedures
odbc_procedures    Get the list of procedures stored in a specific data source
odbc_result    Get result data
odbc_result_all    Print result as HTML table
odbc_rollback    Rollback a transaction
odbc_setoption    Adjust ODBC settings
odbc_specialcolumns    Retrieves special columns
odbc_statistics    Retrieve statistics about a table
odbc_tableprivileges    Lists tables and the privileges associated with each table
odbc_tables    Get the list of table names stored in a specific data source
opcache_compile_file    无需运行，即可编译并缓存 PHP 脚本
opcache_get_configuration    获取缓存的配置信息
opcache_get_status    获取缓存的状态信息
opcache_invalidate    废除脚本缓存
opcache_is_script_cached    Tells whether a script is cached in OPCache
opcache_reset    重置字节码缓存的内容
openal_buffer_create    Generate OpenAL buffer
openal_buffer_data    Load a buffer with data
openal_buffer_destroy    Destroys an OpenAL buffer
openal_buffer_get    Retrieve an OpenAL buffer property
openal_buffer_loadwav    Load a .wav file into a buffer
openal_context_create    Create an audio processing context
openal_context_current    Make the specified context current
openal_context_destroy    Destroys a context
openal_context_process    Process the specified context
openal_context_suspend    Suspend the specified context
openal_device_close    Close an OpenAL device
openal_device_open    Initialize the OpenAL audio layer
openal_listener_get    Retrieve a listener property
openal_listener_set    Set a listener property
openal_source_create    Generate a source resource
openal_source_destroy    Destroy a source resource
openal_source_get    Retrieve an OpenAL source property
openal_source_pause    Pause the source
openal_source_play    Start playing the source
openal_source_rewind    Rewind the source
openal_source_set    Set source property
openal_source_stop    Stop playing the source
openal_stream    Begin streaming on a source
opendir    打开目录句柄
openlog    Open connection to system logger
openssl_cipher_iv_length    Gets the cipher iv length
openssl_csr_export    Exports a CSR as a string
openssl_csr_export_to_file    Exports a CSR to a file
openssl_csr_get_public_key    Returns the public key of a CERT
openssl_csr_get_subject    Returns the subject of a CERT
openssl_csr_new    Generates a CSR
openssl_csr_sign    Sign a CSR with another certificate (or itself) and generate a certificate
openssl_decrypt    Decrypts data
openssl_dh_compute_key    Computes shared secret for public value of remote DH key and local DH key
openssl_digest    Computes a digest
openssl_encrypt    Encrypts data
openssl_error_string    Return openSSL error message
openssl_free_key    Free key resource
openssl_get_cert_locations    Retrieve the available certificate locations
openssl_get_cipher_methods    Gets available cipher methods
openssl_get_md_methods    Gets available digest methods
openssl_get_privatekey    别名 openssl_pkey_get_private
openssl_get_publickey    别名 openssl_pkey_get_public
openssl_open    Open sealed data
openssl_pbkdf2    Generates a PKCS5 v2 PBKDF2 string, defaults to SHA-1
openssl_pkcs7_decrypt    Decrypts an S/MIME encrypted message
openssl_pkcs7_encrypt    Encrypt an S/MIME message
openssl_pkcs7_sign    Sign an S/MIME message
openssl_pkcs7_verify    Verifies the signature of an S/MIME signed message
openssl_pkcs12_export    Exports a PKCS#12 Compatible Certificate Store File to variable.
openssl_pkcs12_export_to_file    Exports a PKCS#12 Compatible Certificate Store File
openssl_pkcs12_read    Parse a PKCS#12 Certificate Store into an array
openssl_pkey_export    Gets an exportable representation of a key into a string
openssl_pkey_export_to_file    Gets an exportable representation of a key into a file
openssl_pkey_free    Frees a private key
openssl_pkey_get_details    Returns an array with the key details
openssl_pkey_get_private    Get a private key
openssl_pkey_get_public    Extract public key from certificate and prepare it for use
openssl_pkey_new    Generates a new private key
openssl_private_decrypt    Decrypts data with private key
openssl_private_encrypt    Encrypts data with private key
openssl_public_decrypt    Decrypts data with public key
openssl_public_encrypt    Encrypts data with public key
openssl_random_pseudo_bytes    Generate a pseudo-random string of bytes
openssl_seal    Seal (encrypt) data
openssl_sign    Generate signature
openssl_spki_export    Exports a valid PEM formatted public key signed public key and challenge
openssl_spki_export_challenge    Exports the challenge assoicated with a signed public key and challenge
openssl_spki_new    Generate a new signed public key and challenge
openssl_spki_verify    Verifies a signed public key and challenge
openssl_verify    Verify signature
openssl_x509_checkpurpose    Verifies if a certificate can be used for a particular purpose
openssl_x509_check_private_key    Checks if a private key corresponds to a certificate
openssl_x509_export    Exports a certificate as a string
openssl_x509_export_to_file    Exports a certificate to file
openssl_x509_fingerprint    Calculates the fingerprint, or digest, of a given X.509 certificate
openssl_x509_free    Free certificate resource
openssl_x509_parse    Parse an X509 certificate and return the information as an array
openssl_x509_read    Parse an X.509 certificate and return a resource identifier for it
ord    返回字符的 ASCII 码值
output_add_rewrite_var    添加URL重写器的值（Add URL rewriter values）
output_reset_rewrite_vars    重设URL重写器的值（Reset URL rewriter values）
override_function    Overrides built-in functions
p
函数    说明
pack    Pack data into binary string
parsekit_compile_file    Compile a PHP file and return the resulting op array
parsekit_compile_string    Compile a string of PHP code and return the resulting op array
parsekit_func_arginfo    Return information regarding function argument(s)
parse_ini_file    解析一个配置文件
parse_ini_string    Parse a configuration string
parse_str    将字符串解析成多个变量
parse_url    解析 URL，返回其组成部分
passthru    执行外部程序并且显示原始输出
password_get_info    Returns information about the given hash
password_hash    Creates a password hash
password_needs_rehash    Checks if the given hash matches the given options
password_verify    Verifies that a password matches a hash
pathinfo    返回文件路径的信息
pclose    关闭进程文件指针
pcntl_alarm    为进程设置一个alarm闹钟信号
pcntl_errno    别名 pcntl_strerror
pcntl_exec    在当前进程空间执行指定程序
pcntl_fork    在当前进程当前位置产生分支（子进程）。译注：fork是创建了一个子进程，父进程和子进程 都从fork的位置开始向下继续执行，不同的是父进程执行过程中，得到的fork返回值为子进程 号，而子进程得到的是0。
pcntl_getpriority    获取任意进程的优先级
pcntl_get_last_error    Retrieve the error number set by the last pcntl function which failed
pcntl_setpriority    修改任意进程的优先级
pcntl_signal    安装一个信号处理器
pcntl_signal_dispatch    调用等待信号的处理器
pcntl_sigprocmask    设置或检索阻塞信号
pcntl_sigtimedwait    带超时机制的信号等待
pcntl_sigwaitinfo    等待信号
pcntl_strerror    Retrieve the system error message associated with the given errno
pcntl_wait    等待或返回fork的子进程状态
pcntl_waitpid    等待或返回fork的子进程状态
pcntl_wexitstatus    返回一个中断的子进程的返回代码
pcntl_wifexited    检查状态代码是否代表一个正常的退出。
pcntl_wifsignaled    检查子进程状态码是否代表由于某个信号而中断
pcntl_wifstopped    检查子进程当前是否已经停止
pcntl_wstopsig    返回导致子进程停止的信号
pcntl_wtermsig    返回导致子进程中断的信号
PDF_activate_item    Activate structure element or other content item
PDF_add_annotation    Add annotation [deprecated]
PDF_add_bookmark    Add bookmark for current page [deprecated]
PDF_add_launchlink    Add launch annotation for current page [deprecated]
PDF_add_locallink    Add link annotation for current page [deprecated]
PDF_add_nameddest    Create named destination
PDF_add_note    Set annotation for current page [deprecated]
PDF_add_outline    Add bookmark for current page [deprecated]
PDF_add_pdflink    Add file link annotation for current page [deprecated]
PDF_add_table_cell    Add a cell to a new or existing table
PDF_add_textflow    Create Textflow or add text to existing Textflow
PDF_add_thumbnail    Add thumbnail for current page
PDF_add_weblink    Add weblink for current page [deprecated]
PDF_arc    Draw a counterclockwise circular arc segment
PDF_arcn    Draw a clockwise circular arc segment
PDF_attach_file    Add file attachment for current page [deprecated]
PDF_begin_document    Create new PDF file
PDF_begin_font    Start a Type 3 font definition
PDF_begin_glyph    Start glyph definition for Type 3 font
PDF_begin_item    Open structure element or other content item
PDF_begin_layer    Start layer
PDF_begin_page    Start new page [deprecated]
PDF_begin_page_ext    Start new page
PDF_begin_pattern    Start pattern definition
PDF_begin_template    Start template definition [deprecated]
PDF_begin_template_ext    Start template definition
PDF_circle    Draw a circle
PDF_clip    Clip to current path
PDF_close    Close pdf resource [deprecated]
PDF_closepath    Close current path
PDF_closepath_fill_stroke    Close, fill and stroke current path
PDF_closepath_stroke    Close and stroke path
PDF_close_image    Close image
PDF_close_pdi    Close the input PDF document [deprecated]
PDF_close_pdi_page    Close the page handle
PDF_concat    Concatenate a matrix to the CTM
PDF_continue_text    Output text in next line
PDF_create_3dview    Create 3D view
PDF_create_action    Create action for objects or events
PDF_create_annotation    Create rectangular annotation
PDF_create_bookmark    Create bookmark
PDF_create_field    Create form field
PDF_create_fieldgroup    Create form field group
PDF_create_gstate    Create graphics state object
PDF_create_pvf    Create PDFlib virtual file
PDF_create_textflow    Create textflow object
PDF_curveto    Draw Bezier curve
PDF_define_layer    Create layer definition
PDF_delete    Delete PDFlib object
PDF_delete_pvf    Delete PDFlib virtual file
PDF_delete_table    Delete table object
PDF_delete_textflow    Delete textflow object
PDF_encoding_set_char    Add glyph name and/or Unicode value
PDF_endpath    End current path
PDF_end_document    Close PDF file
PDF_end_font    Terminate Type 3 font definition
PDF_end_glyph    Terminate glyph definition for Type 3 font
PDF_end_item    Close structure element or other content item
PDF_end_layer    Deactivate all active layers
PDF_end_page    Finish page
PDF_end_page_ext    Finish page
PDF_end_pattern    Finish pattern
PDF_end_template    Finish template
PDF_fill    Fill current path
PDF_fill_imageblock    Fill image block with variable data
PDF_fill_pdfblock    Fill PDF block with variable data
PDF_fill_stroke    Fill and stroke path
PDF_fill_textblock    Fill text block with variable data
PDF_findfont    Prepare font for later use [deprecated]
PDF_fit_image    Place image or template
PDF_fit_pdi_page    Place imported PDF page
PDF_fit_table    Place table on page
PDF_fit_textflow    Format textflow in rectangular area
PDF_fit_textline    Place single line of text
PDF_get_apiname    Get name of unsuccessfull API function
PDF_get_buffer    Get PDF output buffer
PDF_get_errmsg    Get error text
PDF_get_errnum    Get error number
PDF_get_font    Get font [deprecated]
PDF_get_fontname    Get font name [deprecated]
PDF_get_fontsize    Font handling [deprecated]
PDF_get_image_height    Get image height [deprecated]
PDF_get_image_width    Get image width [deprecated]
PDF_get_majorversion    Get major version number [deprecated]
PDF_get_minorversion    Get minor version number [deprecated]
PDF_get_parameter    Get string parameter
PDF_get_pdi_parameter    Get PDI string parameter [deprecated]
PDF_get_pdi_value    Get PDI numerical parameter [deprecated]
PDF_get_value    Get numerical parameter
PDF_info_font    Query detailed information about a loaded font
PDF_info_matchbox    Query matchbox information
PDF_info_table    Retrieve table information
PDF_info_textflow    Query textflow state
PDF_info_textline    Perform textline formatting and query metrics
PDF_initgraphics    Reset graphic state
PDF_lineto    Draw a line
PDF_load_3ddata    Load 3D model
PDF_load_font    Search and prepare font
PDF_load_iccprofile    Search and prepare ICC profile
PDF_load_image    Open image file
PDF_makespotcolor    Make spot color
PDF_moveto    Set current point
PDF_new    Create PDFlib object
PDF_open_ccitt    Open raw CCITT image [deprecated]
PDF_open_file    Create PDF file [deprecated]
PDF_open_gif    Open GIF image [deprecated]
PDF_open_image    Use image data [deprecated]
PDF_open_image_file    Read image from file [deprecated]
PDF_open_jpeg    Open JPEG image [deprecated]
PDF_open_memory_image    Open image created with PHP’s image functions [not supported]
PDF_open_pdi    Open PDF file [deprecated]
PDF_open_pdi_document    Prepare a pdi document
PDF_open_pdi_page    Prepare a page
PDF_open_tiff    Open TIFF image [deprecated]
PDF_pcos_get_number    Get value of pCOS path with type number or boolean
PDF_pcos_get_stream    Get contents of pCOS path with type stream, fstream, or string
PDF_pcos_get_string    Get value of pCOS path with type name, string, or boolean
PDF_place_image    Place image on the page [deprecated]
PDF_place_pdi_page    Place PDF page [deprecated]
PDF_process_pdi    Process imported PDF document
PDF_rect    Draw rectangle
PDF_restore    Restore graphics state
PDF_resume_page    Resume page
PDF_rotate    Rotate coordinate system
PDF_save    Save graphics state
PDF_scale    Scale coordinate system
PDF_setcolor    Set fill and stroke color
PDF_setdash    Set simple dash pattern
PDF_setdashpattern    Set dash pattern
PDF_setflat    Set flatness
PDF_setfont    Set font
PDF_setgray    Set color to gray [deprecated]
PDF_setgray_fill    Set fill color to gray [deprecated]
PDF_setgray_stroke    Set stroke color to gray [deprecated]
PDF_setlinecap    Set linecap parameter
PDF_setlinejoin    Set linejoin parameter
PDF_setlinewidth    Set line width
PDF_setmatrix    Set current transformation matrix
PDF_setmiterlimit    Set miter limit
PDF_setpolydash    Set complicated dash pattern [deprecated]
PDF_setrgbcolor    Set fill and stroke rgb color values [deprecated]
PDF_setrgbcolor_fill    Set fill rgb color values [deprecated]
PDF_setrgbcolor_stroke    Set stroke rgb color values [deprecated]
PDF_set_border_color    Set border color of annotations [deprecated]
PDF_set_border_dash    Set border dash style of annotations [deprecated]
PDF_set_border_style    Set border style of annotations [deprecated]
PDF_set_char_spacing    Set character spacing [deprecated]
PDF_set_duration    Set duration between pages [deprecated]
PDF_set_gstate    Activate graphics state object
PDF_set_horiz_scaling    Set horizontal text scaling [deprecated]
PDF_set_info    Fill document info field
PDF_set_info_author    Fill the author document info field [deprecated]
PDF_set_info_creator    Fill the creator document info field [deprecated]
PDF_set_info_keywords    Fill the keywords document info field [deprecated]
PDF_set_info_subject    Fill the subject document info field [deprecated]
PDF_set_info_title    Fill the title document info field [deprecated]
PDF_set_layer_dependency    Define relationships among layers
PDF_set_leading    Set distance between text lines [deprecated]
PDF_set_parameter    Set string parameter
PDF_set_text_matrix    Set text matrix [deprecated]
PDF_set_text_pos    Set text position
PDF_set_text_rendering    Determine text rendering [deprecated]
PDF_set_text_rise    Set text rise [deprecated]
PDF_set_value    Set numerical parameter
PDF_set_word_spacing    Set spacing between words [deprecated]
PDF_shading    Define blend
PDF_shading_pattern    Define shading pattern
PDF_shfill    Fill area with shading
PDF_show    Output text at current position
PDF_show_boxed    Output text in a box [deprecated]
PDF_show_xy    Output text at given position
PDF_skew    Skew the coordinate system
PDF_stringwidth    Return width of text
PDF_stroke    Stroke path
PDF_suspend_page    Suspend page
PDF_translate    Set origin of coordinate system
PDF_utf8_to_utf16    Convert string from UTF-8 to UTF-16
PDF_utf16_to_utf8    Convert string from UTF-16 to UTF-8
PDF_utf32_to_utf16    Convert string from UTF-32 to UTF-16
PDO_4D DSN    Connecting to 4D SQL server
PDO_CUBRID DSN    Connecting to CUBRID databases
PDO_DBLIB DSN    Connecting to Microsoft SQL Server and Sybase databases
PDO_FIREBIRD DSN    Connecting to Firebird databases
PDO_IBM DSN    Connecting to IBM databases
PDO_INFORMIX DSN    Connecting to Informix databases
PDO_MYSQL DSN    Connecting to MySQL databases
PDO_OCI DSN    Connecting to Oracle databases
PDO_ODBC DSN    Connecting to ODBC or DB2 databases
PDO_PGSQL DSN    Connecting to PostgreSQL databases
PDO_SQLITE DSN    Connecting to SQLite databases
PDO_SQLSRV DSN    Connecting to MS SQL Server and SQL Azure databases
pfsockopen    打开一个持久的网络连接或者Unix套接字连接。
pg_affected_rows    返回受影响的记录数目
pg_cancel_query    取消异步查询
pg_client_encoding    取得客户端编码方式
pg_close    关闭一个 PostgreSQL 连接
pg_connect    打开一个 PostgreSQL 连接
pg_connection_busy    获知连接是否为忙
pg_connection_reset    重置连接（再次连接）
pg_connection_status    获得连接状态
pg_connect_poll    Poll the status of an in-progress asynchronous PostgreSQL connection attempt.
pg_consume_input    Reads input on the connection
pg_convert    将关联的数组值转换为适合 SQL 语句的格式。
pg_copy_from    根据数组将记录插入表中
pg_copy_to    将一个表拷贝到数组中
pg_dbname    获得数据库名
pg_delete    删除记录
pg_end_copy    与 PostgreSQL 后端同步
pg_escape_bytea    转义 bytea 类型的二进制数据
pg_escape_identifier    Escape a identifier for insertion into a text field
pg_escape_literal    Escape a literal for insertion into a text field
pg_escape_string    转义 text/char 类型的字符串
pg_execute    Sends a request to execute a prepared statement with given parameters, and waits for the result.
pg_fetch_all    从结果中提取所有行作为一个数组
pg_fetch_all_columns    Fetches all rows in a particular result column as an array
pg_fetch_array    提取一行作为数组
pg_fetch_assoc    提取一行作为关联数组
pg_fetch_object    提取一行作为对象
pg_fetch_result    从结果资源中返回值
pg_fetch_row    提取一行作为枚举数组
pg_field_is_null    测试字段是否为 NULL
pg_field_name    返回字段的名字
pg_field_num    返回字段的编号
pg_field_prtlen    返回打印出来的长度
pg_field_size    返回指定字段占用内部存储空间的大小
pg_field_table    Returns the name or oid of the tables field
pg_field_type    返回相应字段的类型名称
pg_field_type_oid    Returns the type ID (OID) for the corresponding field number
pg_flush    Flush outbound query data on the connection
pg_free_result    释放查询结果占用的内存
pg_get_notify    Ping 数据库连接
pg_get_pid    Ping 数据库连接
pg_get_result    取得异步查询结果
pg_host    返回和某连接关联的主机名
pg_insert    将数组插入到表中
pg_last_error    得到某连接的最后一条错误信息
pg_last_notice    返回 PostgreSQL 服务器最新一条公告信息
pg_last_oid    返回上一个对象的 oid
pg_lo_close    关闭一个大型对象
pg_lo_create    新建一个大型对象
pg_lo_export    将大型对象导出到文件
pg_lo_import    将文件导入为大型对象
pg_lo_open    打开一个大型对象
pg_lo_read    从大型对象中读入数据
pg_lo_read_all    读入整个大型对象并直接发送给浏览器
pg_lo_seek    移动大型对象中的指针
pg_lo_tell    返回大型对象的当前指针位置
pg_lo_truncate    Truncates a large object
pg_lo_unlink    删除一个大型对象
pg_lo_write    向大型对象写入数据
pg_meta_data    获得表的元数据
pg_num_fields    返回字段的数目
pg_num_rows    返回行的数目
pg_options    获得和连接有关的选项
pg_parameter_status    Looks up a current parameter setting of the server.
pg_pconnect    打开一个持久的 PostgreSQL 连接
pg_ping    Ping 数据库连接
pg_port    返回该连接的端口号
pg_prepare    Submits a request to create a prepared statement with the given parameters, and waits for completion.
pg_put_line    向 PostgreSQL 后端发送以 NULL 结尾的字符串
pg_query    执行查询
pg_query_params    Submits a command to the server and waits for the result, with the ability to pass parameters separately from the SQL command text.
pg_result_error    获得查询结果的错误信息
pg_result_error_field    Returns an individual field of an error report.
pg_result_seek    在结果资源中设定内部行偏移量
pg_result_status    获得查询结果的状态
pg_select    选择记录
pg_send_execute    Sends a request to execute a prepared statement with given parameters, without waiting for the result(s).
pg_send_prepare    Sends a request to create a prepared statement with the given parameters, without waiting for completion.
pg_send_query    发送异步查询
pg_send_query_params    Submits a command and separate parameters to the server without waiting for the result(s).
pg_set_client_encoding    设定客户端编码
pg_set_error_verbosity    Determines the verbosity of messages returned by pg_last_error and pg_result_error.
pg_socket    Get a read only handle to the socket underlying a PostgreSQL connection
pg_trace    启动一个 PostgreSQL 连接的追踪功能
pg_transaction_status    Returns the current in-transaction status of the server.
pg_tty    返回该连接的 tty 号
pg_unescape_bytea    取消 bytea 类型中的字符串转义
pg_untrace    关闭 PostgreSQL 连接的追踪功能
pg_update    更新表
pg_version    Returns an array with client, protocol and server version (when available)
PharException    The PharException class provides a phar-specific exception class for try/catch blocks.
Phar 上下文（context）选项    Phar 上下文（context）选项列表
phpcredits    打印 PHP 贡献者名单
phpinfo    输出关于 PHP 配置的信息
phpversion    获取当前的PHP版本
php_check_syntax    检查PHP的语法（并执行）指定的文件
php_ini_loaded_file    取得已加载的 php.ini 文件的路径
php_ini_scanned_files    返回从额外 ini 目录里解析的 .ini 文件列表
php_logo_guid    获取 logo 的 guid
php_sapi_name    返回 web 服务器和 PHP 之间的接口类型
php_strip_whitespace    返回删除注释和空格后的PHP源码
php_uname    返回运行 PHP 的系统的有关信息
pi    得到圆周率值
png2wbmp    将 PNG 图像文件转换为 WBMP 图像文件
popen    打开进程文件指针
pos    current 的别名
posix_access    Determine accessibility of a file
posix_ctermid    Get path name of controlling terminal
posix_errno    别名 posix_get_last_error
posix_getcwd    Pathname of current directory
posix_getegid    Return the effective group ID of the current process
posix_geteuid    Return the effective user ID of the current process
posix_getgid    Return the real group ID of the current process
posix_getgrgid    Return info about a group by group id
posix_getgrnam    Return info about a group by name
posix_getgroups    Return the group set of the current process
posix_getlogin    Return login name
posix_getpgid    Get process group id for job control
posix_getpgrp    Return the current process group identifier
posix_getpid    返回当前进程 id
posix_getppid    Return the parent process identifier
posix_getpwnam    Return info about a user by username
posix_getpwuid    Return info about a user by user id
posix_getrlimit    Return info about system resource limits
posix_getsid    Get the current sid of the process
posix_getuid    Return the real user ID of the current process
posix_get_last_error    Retrieve the error number set by the last posix function that failed
posix_initgroups    Calculate the group access list
posix_isatty    Determine if a file descriptor is an interactive terminal
posix_kill    Send a signal to a process
posix_mkfifo    Create a fifo special file (a named pipe)
posix_mknod    Create a special or ordinary file (POSIX.1)
posix_setegid    Set the effective GID of the current process
posix_seteuid    Set the effective UID of the current process
posix_setgid    Set the GID of the current process
posix_setpgid    Set process group id for job control
posix_setrlimit    Set system resource limits
posix_setsid    Make the current process a session leader
posix_setuid    Set the UID of the current process
posix_strerror    Retrieve the system error message associated with the given errno
posix_times    Get process times
posix_ttyname    Determine terminal device name
posix_uname    Get system name
pow    指数表达式
preg_filter    执行一个正则表达式搜索和替换
preg_grep    返回匹配模式的数组条目
preg_last_error    返回最后一个PCRE正则执行产生的错误代码
preg_match    执行一个正则表达式匹配
preg_match_all    执行一个全局正则表达式匹配
preg_quote    转义正则表达式字符
preg_replace    执行一个正则表达式的搜索和替换
preg_replace_callback    执行一个正则表达式搜索并且使用一个回调进行替换
preg_replace_callback_array    Perform a regular expression search and replace using callbacks
preg_split    通过一个正则表达式分隔字符串
prev    将数组的内部指针倒回一位
print    输出字符串
printf    输出格式化字符串
print_r    打印关于变量的易于理解的信息。
proc_close    关闭由 proc_open 打开的进程并且返回进程退出码
proc_get_status    获取由 proc_open 函数打开的进程的信息
proc_nice    修改当前进程的优先级
proc_open    执行一个命令，并且打开用来输入/输出的文件指针。
proc_terminate    杀除由 proc_open 打开的进程
property_exists    检查对象或类是否具有该属性
pspell_add_to_personal    Add the word to a personal wordlist
pspell_add_to_session    Add the word to the wordlist in the current session
pspell_check    Check a word
pspell_clear_session    Clear the current session
pspell_config_create    Create a config used to open a dictionary
pspell_config_data_dir    location of language data files
pspell_config_dict_dir    Location of the main word list
pspell_config_ignore    Ignore words less than N characters long
pspell_config_mode    Change the mode number of suggestions returned
pspell_config_personal    Set a file that contains personal wordlist
pspell_config_repl    Set a file that contains replacement pairs
pspell_config_runtogether    Consider run-together words as valid compounds
pspell_config_save_repl    Determine whether to save a replacement pairs list along with the wordlist
pspell_new    Load a new dictionary
pspell_new_config    Load a new dictionary with settings based on a given config
pspell_new_personal    Load a new dictionary with personal wordlist
pspell_save_wordlist    Save the personal wordlist to a file
pspell_store_replacement    Store a replacement pair for a word
pspell_suggest    Suggest spellings of a word
ps_add_bookmark    Add bookmark to current page
ps_add_launchlink    Adds link which launches file
ps_add_locallink    Adds link to a page in the same document
ps_add_note    Adds note to current page
ps_add_pdflink    Adds link to a page in a second pdf document
ps_add_weblink    Adds link to a web location
ps_arc    Draws an arc counterclockwise
ps_arcn    Draws an arc clockwise
ps_begin_page    Start a new page
ps_begin_pattern    Start a new pattern
ps_begin_template    Start a new template
ps_circle    Draws a circle
ps_clip    Clips drawing to current path
ps_close    Closes a PostScript document
ps_closepath    Closes path
ps_closepath_stroke    Closes and strokes path
ps_close_image    Closes image and frees memory
ps_continue_text    Continue text in next line
ps_curveto    Draws a curve
ps_delete    Deletes all resources of a PostScript document
ps_end_page    End a page
ps_end_pattern    End a pattern
ps_end_template    End a template
ps_fill    Fills the current path
ps_fill_stroke    Fills and strokes the current path
ps_findfont    Loads a font
ps_get_buffer    Fetches the full buffer containig the generated PS data
ps_get_parameter    Gets certain parameters
ps_get_value    Gets certain values
ps_hyphenate    Hyphenates a word
ps_include_file    Reads an external file with raw PostScript code
ps_lineto    Draws a line
ps_makespotcolor    Create spot color
ps_moveto    Sets current point
ps_new    Creates a new PostScript document object
ps_open_file    Opens a file for output
ps_open_image    Reads an image for later placement
ps_open_image_file    Opens image from file
ps_open_memory_image    Takes an GD image and returns an image for placement in a PS document
ps_place_image    Places image on the page
ps_rect    Draws a rectangle
ps_restore    Restore previously save context
ps_rotate    Sets rotation factor
ps_save    Save current context
ps_scale    Sets scaling factor
ps_setcolor    Sets current color
ps_setdash    Sets appearance of a dashed line
ps_setflat    Sets flatness
ps_setfont    Sets font to use for following output
ps_setgray    Sets gray value
ps_setlinecap    Sets appearance of line ends
ps_setlinejoin    Sets how contected lines are joined
ps_setlinewidth    Sets width of a line
ps_setmiterlimit    Sets the miter limit
ps_setoverprintmode    Sets overprint mode
ps_setpolydash    Sets appearance of a dashed line
ps_set_border_color    Sets color of border for annotations
ps_set_border_dash    Sets length of dashes for border of annotations
ps_set_border_style    Sets border style of annotations
ps_set_info    Sets information fields of document
ps_set_parameter    Sets certain parameters
ps_set_text_pos    Sets position for text output
ps_set_value    Sets certain values
ps_shading    Creates a shading for later use
ps_shading_pattern    Creates a pattern based on a shading
ps_shfill    Fills an area with a shading
ps_show    Output text
ps_show2    Output a text at current position
ps_show_boxed    Output text in a box
ps_show_xy    Output text at given position
ps_show_xy2    Output text at position
ps_stringwidth    Gets width of a string
ps_string_geometry    Gets geometry of a string
ps_stroke    Draws the current path
ps_symbol    Output a glyph
ps_symbol_name    Gets name of a glyph
ps_symbol_width    Gets width of a glyph
ps_translate    Sets translation
putenv    设置环境变量的值
px_close    Closes a paradox database
px_create_fp    Create a new paradox database
px_date2string    Converts a date into a string.
px_delete    Deletes resource of paradox database
px_delete_record    Deletes record from paradox database
px_get_field    Returns the specification of a single field
px_get_info    Return lots of information about a paradox file
px_get_parameter    Gets a parameter
px_get_record    Returns record of paradox database
px_get_schema    Returns the database schema
px_get_value    Gets a value
px_insert_record    Inserts record into paradox database
px_new    Create a new paradox object
px_numfields    Returns number of fields in a database
px_numrecords    Returns number of records in a database
px_open_fp    Open paradox database
px_put_record    Stores record into paradox database
px_retrieve_record    Returns record of paradox database
px_set_blob_file    Sets the file where blobs are read from
px_set_parameter    Sets a parameter
px_set_tablename    Sets the name of a table (deprecated)
px_set_targetencoding    Sets the encoding for character fields (deprecated)
px_set_value    Sets a value
px_timestamp2string    Converts the timestamp into a string.
px_update_record    Updates record in paradox database
q
函数    说明
quoted_printable_decode    将 quoted-printable 字符串转换为 8-bit 字符串
quoted_printable_encode    将 8-bit 字符串转换成 quoted-printable 字符串
quotemeta    转义元字符集
r
函数    说明
rad2deg    将弧度数转换为相应的角度数
radius_acct_open    Creates a Radius handle for accounting
radius_add_server    Adds a server
radius_auth_open    Creates a Radius handle for authentication
radius_close    Frees all ressources
radius_config    Causes the library to read the given configuration file
radius_create_request    Create accounting or authentication request
radius_cvt_addr    Converts raw data to IP-Address
radius_cvt_int    Converts raw data to integer
radius_cvt_string    Converts raw data to string
radius_demangle    Demangles data
radius_demangle_mppe_key    Derives mppe-keys from mangled data
radius_get_attr    Extracts an attribute
radius_get_tagged_attr_data    Extracts the data from a tagged attribute
radius_get_tagged_attr_tag    Extracts the tag from a tagged attribute
radius_get_vendor_attr    Extracts a vendor specific attribute
radius_put_addr    Attaches an IP address attribute
radius_put_attr    Attaches a binary attribute
radius_put_int    Attaches an integer attribute
radius_put_string    Attaches a string attribute
radius_put_vendor_addr    Attaches a vendor specific IP address attribute
radius_put_vendor_attr    Attaches a vendor specific binary attribute
radius_put_vendor_int    Attaches a vendor specific integer attribute
radius_put_vendor_string    Attaches a vendor specific string attribute
radius_request_authenticator    Returns the request authenticator
radius_salt_encrypt_attr    Salt-encrypts a value
radius_send_request    Sends the request and waites for a reply
radius_server_secret    Returns the shared secret
radius_strerror    Returns an error message
rand    产生一个随机整数
random_bytes    Generates cryptographically secure pseudo-random bytes
random_int    Generates cryptographically secure pseudo-random integers
range    建立一个包含指定范围单元的数组
rar_wrapper_cache_stats    Cache hits and misses for the URL wrapper
rawurldecode    对已编码的 URL 字符串进行解码
rawurlencode    按照 RFC 3986 对 URL 进行编码
readdir    从目录句柄中读取条目
readfile    输出一个文件
readgzfile    Output a gz-file
readline    读取一行
readline_add_history    添加一行命令行历史记录
readline_callback_handler_install    初始化一个 readline 回调接口，然后终端输出提示信息并立即返回
readline_callback_handler_remove    移除上一个安装的回调函数句柄并且恢复终端设置
readline_callback_read_char    当一个行被接收时读取一个字符并且通知 readline 调用回调函数
readline_clear_history    清除历史
readline_completion_function    注册一个完成函数
readline_info    获取/设置readline内部的各个变量
readline_list_history    获取命令历史列表
readline_on_new_line    通知readline将光标移动到新行
readline_read_history    读取命令历史
readline_redisplay    重绘显示区
readline_write_history    写入历史记录
readlink    返回符号连接指向的目标
read_exif_data    别名 exif_read_data
realpath    返回规范化的绝对路径名
realpath_cache_get    Get realpath cache entries
realpath_cache_size    Get realpath cache size
recode    别名 recode_string
recode_file    Recode from file to file according to recode request
recode_string    Recode a string according to a recode request
register_shutdown_function    Register a function for execution on shutdown
register_tick_function    Register a function for execution on each tick
rename    重命名一个文件或目录
rename_function    Renames orig_name to new_name in the global function table
reset    将数组的内部指针指向第一个单元
restore_error_handler    还原之前的错误处理函数
restore_exception_handler    恢复之前定义过的异常处理函数。
restore_include_path    还原 include_path 配置选项的值
rewind    倒回文件指针的位置
rewinddir    倒回目录句柄
rmdir    删除目录
round    对浮点数进行四舍五入
rpm_close    Closes an RPM file
rpm_get_tag    Retrieves a header tag from an RPM file
rpm_is_valid    Tests a filename for validity as an RPM file
rpm_open    Opens an RPM file
rpm_version    Returns a string representing the current version of the rpmreader extension
rrdc_disconnect    Close any outstanding connection to rrd caching daemon
rrd_create    Creates rrd database file
rrd_error    Gets latest error message.
rrd_fetch    Fetch the data for graph as array.
rrd_first    Gets the timestamp of the first sample from rrd file.
rrd_graph    Creates image from a data.
rrd_info    Gets information about rrd file
rrd_last    Gets unix timestamp of the last sample.
rrd_lastupdate    Gets information about last updated data.
rrd_restore    Restores the RRD file from XML dump.
rrd_tune    Tunes some RRD database file header options.
rrd_update    Updates the RRD database.
rrd_version    Gets information about underlying rrdtool library
rrd_xport    Exports the information about RRD database.
rsort    对数组逆向排序
rtrim    删除字符串末端的空白字符（或者其他字符）
runkit_class_adopt    Convert a base class to an inherited class, add ancestral methods when appropriate
runkit_class_emancipate    Convert an inherited class to a base class, removes any method whose scope is ancestral
runkit_constant_add    Similar to define(), but allows defining in class definitions as well
runkit_constant_redefine    Redefine an already defined constant
runkit_constant_remove    Remove/Delete an already defined constant
runkit_function_add    Add a new function, similar to create_function
runkit_function_copy    Copy a function to a new function name
runkit_function_redefine    Replace a function definition with a new implementation
runkit_function_remove    Remove a function definition
runkit_function_rename    Change a function’s name
runkit_import    Process a PHP file importing function and class definitions, overwriting where appropriate
runkit_lint    Check the PHP syntax of the specified php code
runkit_lint_file    Check the PHP syntax of the specified file
runkit_method_add    Dynamically adds a new method to a given class
runkit_method_copy    Copies a method from class to another
runkit_method_redefine    Dynamically changes the code of the given method
runkit_method_remove    Dynamically removes the given method
runkit_method_rename    Dynamically changes the name of the given method
runkit_return_value_used    Determines if the current functions return value will be used
Runkit_Sandbox    Runkit Sandbox Class – PHP Virtual Machine
runkit_sandbox_output_handler    Specify a function to capture and/or process output from a runkit sandbox
Runkit_Sandbox_Parent    Runkit Anti-Sandbox Class

runkit_superglobals    Return numerically indexed array of registered superglobals

s
函数    说明
scandir    列出指定路径中的文件和目录
sem_acquire    Acquire a semaphore
sem_get    Get a semaphore id
sem_release    Release a semaphore
sem_remove    Remove a semaphore
serialize    产生一个可存储的值的表示
session_abort    Discard session array changes and finish session
session_cache_expire    返回当前缓存的到期时间
session_cache_limiter    读取/设置缓存限制器
session_commit    session_write_close 的别名
session_decode    解码会话数据
session_destroy    销毁一个会话中的全部数据
session_encode    将当前会话数据编码为一个字符串
session_get_cookie_params    获取会话 cookie 参数
session_id    获取/设置当前会话 ID
session_is_registered    检查变量是否在会话中已经注册
session_module_name    获取/设置会话模块名称
session_name    读取/设置会话名称
session_pgsql_add_error    Increments error counts and sets last error message
session_pgsql_get_error    Returns number of errors and last error message
session_pgsql_get_field    Get custom field value
session_pgsql_reset    Reset connection to session database servers
session_pgsql_set_field    Set custom field value
session_pgsql_status    Get current save handler status
session_regenerate_id    使用新生成的会话 ID 更新现有会话 ID
session_register    Register one or more global variables with the current session
session_register_shutdown    关闭会话
session_reset    Re-initialize session array with original values
session_save_path    读取/设置当前会话的保存路径
session_set_cookie_params    设置会话 cookie 参数
session_set_save_handler    设置用户自定义会话存储函数
session_start    启动新会话或者重用现有会话
session_status    Returns the current session status
session_unregister    Unregister a global variable from the current session
session_unset    Free all session variables
session_write_close    Write session data and end session
setcookie    Send a cookie
setlocale    设置地区信息
setproctitle    Set the process title
setrawcookie    Send a cookie without urlencoding the cookie value
setthreadtitle    Set the thread title
settype    设置变量的类型
set_error_handler    设置一个用户定义的错误处理函数
set_exception_handler    设置一个用户定义的异常处理函数。
set_file_buffer    stream_set_write_buffer 的别名
set_include_path    设置 include_path 配置选项
set_magic_quotes_runtime    设置当前 magic_quotes_runtime 配置选项的激活状态
set_socket_blocking    别名 stream_set_blocking
set_time_limit    设置脚本最大执行时间
sha1    计算字符串的 sha1 散列值
sha1_file    计算文件的 sha1 散列值
shell_exec    通过 shell 环境执行命令，并且将完整的输出以字符串的方式返回。
shmop_close    Close shared memory block
shmop_delete    Delete shared memory block
shmop_open    Create or open shared memory block
shmop_read    Read data from shared memory block
shmop_size    Get size of shared memory block
shmop_write    Write data into shared memory block
shm_attach    Creates or open a shared memory segment
shm_detach    Disconnects from shared memory segment
shm_get_var    Returns a variable from shared memory
shm_has_var    Check whether a specific entry exists
shm_put_var    Inserts or updates a variable in shared memory
shm_remove    Removes shared memory from Unix systems
shm_remove_var    Removes a variable from shared memory
show_source    别名 highlight_file
shuffle    将数组打乱
signeurlpaiement    Obtain the payment url (needs 2 arguments)
similar_text    计算两个字符串的相似度
simplexml_import_dom    Get a SimpleXMLElement object from a DOM node.
simplexml_load_file    Interprets an XML file into an object
simplexml_load_string    Interprets a string of XML into an object
sin    正弦
sinh    双曲正弦
sizeof    count 的别名
sleep    延缓执行
snmp2_get    Fetch an SNMP object
snmp2_getnext    Fetch the SNMP object which follows the given object id
snmp2_real_walk    Return all objects including their respective object ID within the specified one
snmp2_set    Set the value of an SNMP object
snmp2_walk    Fetch all the SNMP objects from an agent
snmp3_get    Fetch an SNMP object
snmp3_getnext    Fetch the SNMP object which follows the given object id
snmp3_real_walk    Return all objects including their respective object ID within the specified one
snmp3_set    Set the value of an SNMP object
snmp3_walk    Fetch all the SNMP objects from an agent
snmpget    获取一个 SNMP 对象
snmpgetnext    Fetch the SNMP object which follows the given object id
snmprealwalk    返回指定的所有对象，包括它们各自的对象 ID
snmpset    设置一个 SNMP 对象
snmpwalk    从代理返回所有的 SNMP 对象
snmpwalkoid    查询关于网络实体的信息树
snmp_get_quick_print    返回 UCD 库中 quick_print 设置的当前值
snmp_get_valueretrieval    Return the method how the SNMP values will be returned
snmp_read_mib    Reads and parses a MIB file into the active MIB tree
snmp_set_enum_print    Return all values that are enums with their enum value instead of the raw integer
snmp_set_oid_numeric_print    Set the OID output format
snmp_set_oid_output_format    Set the OID output format
snmp_set_quick_print    设置 UCD SNMP 库中 quick_print 的值
snmp_set_valueretrieval    Specify the method how the SNMP values will be returned
socket_accept    Accepts a connection on a socket
socket_bind    给套接字绑定名字
socket_clear_error    清除套接字或者最后的错误代码上的错误
socket_close    关闭套接字资源
socket_cmsg_space    Calculate message buffer size
socket_connect    开启一个套接字连接
socket_create    创建一个套接字（通讯节点）
socket_create_listen    Opens a socket on port to accept connections
socket_create_pair    Creates a pair of indistinguishable sockets and stores them in an array
socket_getpeername    Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
socket_getsockname    Queries the local side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
socket_get_option    Gets socket options for the socket
socket_get_status    别名 stream_get_meta_data
socket_import_stream    Import a stream
socket_last_error    Returns the last error on the socket
socket_listen    Listens for a connection on a socket
socket_read    Reads a maximum of length bytes from a socket
socket_recv    Receives data from a connected socket
socket_recvfrom    Receives data from a socket whether or not it is connection-oriented
socket_recvmsg    Read a message
socket_select    Runs the select() system call on the given arrays of sockets with a specified timeout
socket_send    Sends data to a connected socket
socket_sendmsg    Send a message
socket_sendto    Sends a message to a socket, whether it is connected or not
socket_set_block    Sets blocking mode on a socket resource
socket_set_blocking    别名 stream_set_blocking
socket_set_nonblock    Sets nonblocking mode for file descriptor fd
socket_set_option    Sets socket options for the socket
socket_set_timeout    别名 stream_set_timeout
socket_shutdown    Shuts down a socket for receiving, sending, or both
socket_strerror    Return a string describing a socket error
socket_write    Write to a socket
solr_get_version    返回当前Solr扩展的版本
sort    对数组排序
soundex    Calculate the soundex key of a string
split    用正则表达式将字符串分割到数组中
spliti    用正则表达式不区分大小写将字符串分割到数组中
spl_autoload    __autoload()函数的默认实现
spl_autoload_call    尝试调用所有已注册的__autoload()函数来装载请求类
spl_autoload_extensions    注册并返回spl_autoload函数使用的默认文件扩展名。
spl_autoload_functions    返回所有已注册的__autoload()函数。
spl_autoload_register    注册给定的函数作为 __autoload 的实现
spl_autoload_unregister    注销已注册的__autoload()函数
spl_classes    返回所有可用的SPL类
spl_object_hash    返回指定对象的hash id
sprintf    Return a formatted string
SQL acceptable by 4D    PDO and SQL 4D
sqlite_array_query    Execute a query against a given database and returns an array
sqlite_busy_timeout    Set busy timeout duration, or disable busy handlers
sqlite_changes    Returns the number of rows that were changed by the most recent SQL statement
sqlite_close    Closes an open SQLite database
sqlite_column    Fetches a column from the current row of a result set
sqlite_create_aggregate    Register an aggregating UDF for use in SQL statements
sqlite_create_function    Registers a “regular” User Defined Function for use in SQL statements
sqlite_current    Fetches the current row from a result set as an array
sqlite_error_string    Returns the textual description of an error code
sqlite_escape_string    Escapes a string for use as a query parameter
sqlite_exec    Executes a result-less query against a given database
sqlite_factory    Opens an SQLite database and returns an SQLiteDatabase object
sqlite_fetch_all    Fetches all rows from a result set as an array of arrays
sqlite_fetch_array    Fetches the next row from a result set as an array
sqlite_fetch_column_types    Return an array of column types from a particular table
sqlite_fetch_object    Fetches the next row from a result set as an object
sqlite_fetch_single    Fetches the first column of a result set as a string
sqlite_fetch_string    别名 sqlite_fetch_single
sqlite_field_name    Returns the name of a particular field
sqlite_has_more    Finds whether or not more rows are available
sqlite_has_prev    Returns whether or not a previous row is available
sqlite_key    Returns the current row index
sqlite_last_error    Returns the error code of the last error for a database
sqlite_last_insert_rowid    Returns the rowid of the most recently inserted row
sqlite_libencoding    Returns the encoding of the linked SQLite library
sqlite_libversion    Returns the version of the linked SQLite library
sqlite_next    Seek to the next row number
sqlite_num_fields    Returns the number of fields in a result set
sqlite_num_rows    Returns the number of rows in a buffered result set
sqlite_open    Opens an SQLite database and create the database if it does not exist
sqlite_popen    Opens a persistent handle to an SQLite database and create the database if it does not exist
sqlite_prev    Seek to the previous row number of a result set
sqlite_query    Executes a query against a given database and returns a result handle
sqlite_rewind    Seek to the first row number
sqlite_seek    Seek to a particular row number of a buffered result set
sqlite_single_query    Executes a query and returns either an array for one single column or the value of the first row
sqlite_udf_decode_binary    Decode binary data passed as parameters to an UDF
sqlite_udf_encode_binary    Encode binary data before returning it from an UDF
sqlite_unbuffered_query    Execute a query that does not prefetch and buffer all data
sqlite_valid    Returns whether more rows are available
sqlsrv_begin_transaction    Begins a database transaction
sqlsrv_cancel    Cancels a statement
sqlsrv_client_info    Returns information about the client and specified connection
sqlsrv_close    Closes an open connection and releases resourses associated with the connection
sqlsrv_commit    Commits a transaction that was begun with sqlsrv_begin_transaction
sqlsrv_configure    Changes the driver error handling and logging configurations
sqlsrv_connect    Opens a connection to a Microsoft SQL Server database
sqlsrv_errors    Returns error and warning information about the last SQLSRV operation performed
sqlsrv_execute    Executes a statement prepared with sqlsrv_prepare
sqlsrv_fetch    Makes the next row in a result set available for reading
sqlsrv_fetch_array    Returns a row as an array
sqlsrv_fetch_object    Retrieves the next row of data in a result set as an object
sqlsrv_field_metadata    Retrieves metadata for the fields of a statement prepared by sqlsrv_prepare or sqlsrv_query
sqlsrv_free_stmt    Frees all resources for the specified statement
sqlsrv_get_config    Returns the value of the specified configuration setting
sqlsrv_get_field    Gets field data from the currently selected row
sqlsrv_has_rows    Indicates whether the specified statement has rows
sqlsrv_next_result    Makes the next result of the specified statement active
sqlsrv_num_fields    Retrieves the number of fields (columns) on a statement
sqlsrv_num_rows    Retrieves the number of rows in a result set
sqlsrv_prepare    Prepares a query for execution
sqlsrv_query    Prepares and executes a query.
sqlsrv_rollback    Rolls back a transaction that was begun with sqlsrv_begin_transaction
sqlsrv_rows_affected    Returns the number of rows modified by the last INSERT, UPDATE, or DELETE query executed
sqlsrv_send_stream_data    Sends data from parameter streams to the server
sqlsrv_server_info    Returns information about the server
SQL types with PDO_4D and PHP    SQL types with PDO_4D and PHP
sql_regcase    产生用于不区分大小的匹配的正则表达式
sqrt    平方根
srand    播下随机数发生器种子
sscanf    根据指定格式解析输入的字符
ssdeep_fuzzy_compare    Calculates the match score between two fuzzy hash signatures
ssdeep_fuzzy_hash    Create a fuzzy hash from a string
ssdeep_fuzzy_hash_filename    Create a fuzzy hash from a file
ssh2_auth_agent    Authenticate over SSH using the ssh agent
ssh2_auth_hostbased_file    Authenticate using a public hostkey
ssh2_auth_none    Authenticate as “none”
ssh2_auth_password    Authenticate over SSH using a plain password
ssh2_auth_pubkey_file    Authenticate using a public key
ssh2_connect    Connect to an SSH server
ssh2_exec    Execute a command on a remote server
ssh2_fetch_stream    Fetch an extended data stream
ssh2_fingerprint    Retrieve fingerprint of remote server
ssh2_methods_negotiated    Return list of negotiated methods
ssh2_publickey_add    Add an authorized publickey
ssh2_publickey_init    Initialize Publickey subsystem
ssh2_publickey_list    List currently authorized publickeys
ssh2_publickey_remove    Remove an authorized publickey
ssh2_scp_recv    Request a file via SCP
ssh2_scp_send    Send a file via SCP
ssh2_sftp    Initialize SFTP subsystem
ssh2_sftp_chmod    Changes file mode
ssh2_sftp_lstat    Stat a symbolic link
ssh2_sftp_mkdir    Create a directory
ssh2_sftp_readlink    Return the target of a symbolic link
ssh2_sftp_realpath    Resolve the realpath of a provided path string
ssh2_sftp_rename    Rename a remote file
ssh2_sftp_rmdir    Remove a directory
ssh2_sftp_stat    Stat a file on a remote filesystem
ssh2_sftp_symlink    Create a symlink
ssh2_sftp_unlink    Delete a file
ssh2_shell    Request an interactive shell
ssh2_tunnel    Open a tunnel through a remote server
SSL 上下文选项    SSL 上下文选项清单
stat    给出文件的信息
stats_absolute_deviation    Returns the absolute deviation of an array of values
stats_cdf_beta    CDF function for BETA Distribution. Calculates any one parameter of the beta distribution given values for the others.
stats_cdf_binomial    Calculates any one parameter of the binomial distribution given values for the others.
stats_cdf_cauchy    Not documented
stats_cdf_chisquare    Calculates any one parameter of the chi-square distribution given values for the others.
stats_cdf_exponential    Not documented
stats_cdf_f    Calculates any one parameter of the F distribution given values for the others.
stats_cdf_gamma    Calculates any one parameter of the gamma distribution given values for the others.
stats_cdf_laplace    Not documented
stats_cdf_logistic    Not documented
stats_cdf_negative_binomial    Calculates any one parameter of the negative binomial distribution given values for the others.
stats_cdf_noncentral_chisquare    Calculates any one parameter of the non-central chi-square distribution given values for the others.
stats_cdf_noncentral_f    Calculates any one parameter of the Non-central F distribution given values for the others.
stats_cdf_poisson    Calculates any one parameter of the Poisson distribution given values for the others.
stats_cdf_t    Calculates any one parameter of the T distribution given values for the others.
stats_cdf_uniform    Not documented
stats_cdf_weibull    Not documented
stats_covariance    Computes the covariance of two data sets
stats_dens_beta    Not documented
stats_dens_cauchy    Not documented
stats_dens_chisquare    Not documented
stats_dens_exponential    Not documented
stats_dens_f    说明
stats_dens_gamma    Not documented
stats_dens_laplace    Not documented
stats_dens_logistic    Not documented
stats_dens_negative_binomial    Not documented
stats_dens_normal    Not documented
stats_dens_pmf_binomial    Not documented
stats_dens_pmf_hypergeometric    说明
stats_dens_pmf_poisson    Not documented
stats_dens_t    Not documented
stats_dens_weibull    Not documented
stats_den_uniform    Not documented
stats_harmonic_mean    Returns the harmonic mean of an array of values
stats_kurtosis    Computes the kurtosis of the data in the array
stats_rand_gen_beta    Generates beta random deviate
stats_rand_gen_chisquare    Generates random deviate from the distribution of a chisquare with “df” degrees of freedom random variable.
stats_rand_gen_exponential    Generates a single random deviate from an exponential distribution with mean “av”
stats_rand_gen_f    Generates a random deviate
stats_rand_gen_funiform    Generates uniform float between low (exclusive) and high (exclusive)
stats_rand_gen_gamma    Generates random deviates from a gamma distribution
stats_rand_gen_ibinomial    Generates a single random deviate from a binomial distribution whose number of trials is “n” (n >= 0) and whose probability of an event in each trial is “pp” ([0;1]). Method : algorithm BTPE
stats_rand_gen_ibinomial_negative    Generates a single random deviate from a negative binomial distribution. Arguments : n
stats_rand_gen_int    Generates random integer between 1 and 2147483562
stats_rand_gen_ipoisson    Generates a single random deviate from a Poisson distribution with mean “mu” (mu >= 0.0).
stats_rand_gen_iuniform    Generates integer uniformly distributed between LOW (inclusive) and HIGH (inclusive)
stats_rand_gen_noncenral_chisquare    Generates random deviate from the distribution of a noncentral chisquare with “df” degrees of freedom and noncentrality parameter “xnonc”. d must be >= 1.0, xnonc must >= 0.0
stats_rand_gen_noncentral_f    Generates a random deviate from the noncentral F (variance ratio) distribution with “dfn” degrees of freedom in the numerator, and “dfd” degrees of freedom in the denominator, and noncentrality parameter “xnonc”. Method : directly generates ratio of noncentral numerator chisquare variate to central denominator chisquare variate.
stats_rand_gen_noncentral_t    Generates a single random deviate from a noncentral T distribution
stats_rand_gen_normal    Generates a single random deviate from a normal distribution with mean, av, and standard deviation, sd (sd >= 0). Method : Renames SNORM from TOMS as slightly modified by BWB to use RANF instead of SUNIF.
stats_rand_gen_t    Generates a single random deviate from a T distribution
stats_rand_get_seeds    Not documented
stats_rand_phrase_to_seeds    generate two seeds for the RGN random number generator
stats_rand_ranf    Returns a random floating point number from a uniform distribution over 0
stats_rand_setall    Not documented
stats_skew    Computes the skewness of the data in the array
stats_standard_deviation    Returns the standard deviation
stats_stat_binomial_coef    Not documented
stats_stat_correlation    Not documented
stats_stat_gennch    Not documented
stats_stat_independent_t    Not documented
stats_stat_innerproduct    说明
stats_stat_noncentral_t    Calculates any one parameter of the noncentral t distribution give values for the others.
stats_stat_paired_t    Not documented
stats_stat_percentile    Not documented
stats_stat_powersum    Not documented
stats_variance    Returns the population variance
stomp_connect_error    Returns a string description of the last connect error
stomp_version    Gets the current stomp extension version
strcasecmp    二进制安全比较字符串（不区分大小写）
strchr    别名 strstr
strcmp    二进制安全字符串比较
strcoll    基于区域设置的字符串比较
strcspn    获取不匹配遮罩的起始子字符串的长度
stream_bucket_append    Append bucket to brigade
stream_bucket_make_writeable    Return a bucket object from the brigade for operating on
stream_bucket_new    Create a new bucket for use on the current stream
stream_bucket_prepend    Prepend bucket to brigade
stream_context_create    创建资源流上下文
stream_context_get_default    Retrieve the default stream context
stream_context_get_options    获取资源流/数据包/上下文的参数
stream_context_get_params    Retrieves parameters from a context
stream_context_set_default    Set the default stream context
stream_context_set_option    对资源流、数据包或者上下文设置参数
stream_context_set_params    Set parameters for a stream/wrapper/context
stream_copy_to_stream    Copies data from one stream to another
stream_encoding    设置数据流的字符集
stream_filter_append    Attach a filter to a stream
stream_filter_prepend    Attach a filter to a stream
stream_filter_register    Register a user defined stream filter
stream_filter_remove    从资源流里移除某个过滤器
stream_get_contents    读取资源流到一个字符串
stream_get_filters    获取已注册的数据流过滤器列表
stream_get_line    从资源流里读取一行直到给定的定界符
stream_get_meta_data    从封装协议文件指针中取得报头／元数据
stream_get_transports    获取已注册的套接字传输协议列表
stream_get_wrappers    获取已注册的流类型
stream_is_local    Checks if a stream is a local stream
stream_notification_callback    A callback function for the notification context parameter
stream_register_wrapper    注册一个用 PHP 类实现的 URL 封装协议
stream_resolve_include_path    Resolve filename against the include path
stream_select    Runs the equivalent of the select() system call on the given arrays of streams with a timeout specified by tv_sec and tv_usec
stream_set_blocking    为资源流设置阻塞或者阻塞模式
stream_set_chunk_size    设置资源流区块大小
stream_set_read_buffer    Set read file buffering on the given stream
stream_set_timeout    Set timeout period on a stream
stream_set_write_buffer    Sets write file buffering on the given stream
stream_socket_accept    接受由 stream_socket_server 创建的套接字连接
stream_socket_client    Open Internet or Unix domain socket connection
stream_socket_enable_crypto    Turns encryption on/off on an already connected socket
stream_socket_get_name    获取本地或者远程的套接字名称
stream_socket_pair    创建一对完全一样的网络套接字连接流
stream_socket_recvfrom    Receives data from a socket, connected or not
stream_socket_sendto    Sends a message to a socket, whether it is connected or not
stream_socket_server    Create an Internet or Unix domain server socket
stream_socket_shutdown    Shutdown a full-duplex connection
stream_supports_lock    Tells whether the stream supports locking.
stream_wrapper_restore    Restores a previously unregistered built-in wrapper
stream_wrapper_unregister    Unregister a URL wrapper
strftime    根据区域设置格式化本地时间／日期
stripcslashes    反引用一个使用 addcslashes 转义的字符串
stripos    查找字符串首次出现的位置（不区分大小写）
stripslashes    反引用一个引用字符串
strip_tags    从字符串中去除 HTML 和 PHP 标记
stristr    strstr 函数的忽略大小写版本
strlen    获取字符串长度
strnatcasecmp    使用“自然顺序”算法比较字符串（不区分大小写）
strnatcmp    使用自然排序算法比较字符串
strncasecmp    二进制安全比较字符串开头的若干个字符（不区分大小写）
strncmp    二进制安全比较字符串开头的若干个字符
strpbrk    在字符串中查找一组字符的任何一个字符
strpos    查找字符串首次出现的位置
strptime    解析由 strftime 生成的日期／时间
strrchr    查找指定字符在字符串中的最后一次出现
strrev    反转字符串
strripos    计算指定字符串在目标字符串中最后一次出现的位置（不区分大小写）
strrpos    计算指定字符串在目标字符串中最后一次出现的位置
strspn    计算字符串中全部字符都存在于指定字符集合中的第一段子串的长度。
strstr    查找字符串的首次出现
strtok    标记分割字符串
strtolower    将字符串转化为小写
strtotime    将任何英文文本的日期时间描述解析为 Unix 时间戳
strtoupper    将字符串转化为大写
strtr    转换指定字符
strval    获取变量的字符串值
str_getcsv    解析 CSV 字符串为一个数组
str_ireplace    str_replace 的忽略大小写版本
str_pad    使用另一个字符串填充字符串为指定长度
str_repeat    重复一个字符串
str_replace    子字符串替换
str_rot13    对字符串执行 ROT13 转换
str_shuffle    随机打乱一个字符串
str_split    将字符串转换为数组
str_word_count    返回字符串中单词的使用情况
substr    返回字符串的子串
substr_compare    二进制安全比较字符串（从偏移位置比较指定长度）
substr_count    计算字串出现的次数
substr_replace    替换字符串的子串
svn_add    计划在工作目录添加项
svn_auth_get_parameter    Retrieves authentication parameter
svn_auth_set_parameter    Sets an authentication parameter
svn_blame    Get the SVN blame for a file
svn_cat    Returns the contents of a file in a repository
svn_checkout    Checks out a working copy from the repository
svn_cleanup    Recursively cleanup a working copy directory, finishing incomplete operations and removing locks
svn_client_version    Returns the version of the SVN client libraries
svn_commit    Sends changes from the local working copy to the repository
svn_delete    Delete items from a working copy or repository.
svn_diff    Recursively diffs two paths
svn_export    Export the contents of a SVN directory
svn_fs_abort_txn    Abort a transaction, returns true if everything is okay, false otherwise
svn_fs_apply_text    Creates and returns a stream that will be used to replace
svn_fs_begin_txn2    Create a new transaction
svn_fs_change_node_prop    Return true if everything is ok, false otherwise
svn_fs_check_path    Determines what kind of item lives at path in a given repository fsroot
svn_fs_contents_changed    Return true if content is different, false otherwise
svn_fs_copy    Copies a file or a directory, returns true if all is ok, false otherwise
svn_fs_delete    Deletes a file or a directory, return true if all is ok, false otherwise
svn_fs_dir_entries    Enumerates the directory entries under path; returns a hash of dir names to file type
svn_fs_file_contents    Returns a stream to access the contents of a file from a given version of the fs
svn_fs_file_length    Returns the length of a file from a given version of the fs
svn_fs_is_dir    Return true if the path points to a directory, false otherwise
svn_fs_is_file    Return true if the path points to a file, false otherwise
svn_fs_make_dir    Creates a new empty directory, returns true if all is ok, false otherwise
svn_fs_make_file    Creates a new empty file, returns true if all is ok, false otherwise
svn_fs_node_created_rev    Returns the revision in which path under fsroot was created
svn_fs_node_prop    Returns the value of a property for a node
svn_fs_props_changed    Return true if props are different, false otherwise
svn_fs_revision_prop    Fetches the value of a named property
svn_fs_revision_root    Get a handle on a specific version of the repository root
svn_fs_txn_root    Creates and returns a transaction root
svn_fs_youngest_rev    Returns the number of the youngest revision in the filesystem
svn_import    Imports an unversioned path into a repository
svn_log    Returns the commit log messages of a repository URL
svn_ls    Returns list of directory contents in repository URL, optionally at revision number
svn_mkdir    Creates a directory in a working copy or repository
svn_repos_create    Create a new subversion repository at path
svn_repos_fs    Gets a handle on the filesystem for a repository
svn_repos_fs_begin_txn_for_commit    Create a new transaction
svn_repos_fs_commit_txn    Commits a transaction and returns the new revision
svn_repos_hotcopy    Make a hot-copy of the repos at repospath; copy it to destpath
svn_repos_open    Open a shared lock on a repository.
svn_repos_recover    Run recovery procedures on the repository located at path.
svn_revert    Revert changes to the working copy
svn_status    Returns the status of working copy files and directories
svn_update    Update working copy
sybase_affected_rows    Gets number of affected rows in last query
sybase_close    Closes a Sybase connection
sybase_connect    Opens a Sybase server connection
sybase_data_seek    Moves internal row pointer
sybase_deadlock_retry_count    Sets the deadlock retry count
sybase_fetch_array    Fetch row as array
sybase_fetch_assoc    Fetch a result row as an associative array
sybase_fetch_field    Get field information from a result
sybase_fetch_object    Fetch a row as an object
sybase_fetch_row    Get a result row as an enumerated array
sybase_field_seek    Sets field offset
sybase_free_result    Frees result memory
sybase_get_last_message    Returns the last message from the server
sybase_min_client_severity    Sets minimum client severity
sybase_min_error_severity    Sets minimum error severity
sybase_min_message_severity    Sets minimum message severity
sybase_min_server_severity    Sets minimum server severity
sybase_num_fields    Gets the number of fields in a result set
sybase_num_rows    Get number of rows in a result set
sybase_pconnect    Open persistent Sybase connection
sybase_query    Sends a Sybase query
sybase_result    Get result data
sybase_select_db    Selects a Sybase database
sybase_set_message_handler    Sets the handler called when a server message is raised
sybase_unbuffered_query    Send a Sybase query and do not block
symlink    建立符号连接
syslog    Generate a system log message
system    执行外部程序，并且显示输出
sys_getloadavg    获取系统的负载（load average）
sys_get_temp_dir    返回用于临时文件的目录
t
函数    说明
taint    Taint a string
tan    正切
tanh    双曲正切
tcpwrap_check    Performs a tcpwrap check
tempnam    建立一个具有唯一文件名的文件
textdomain    Sets the default domain
tidy_access_count    Returns the Number of Tidy accessibility warnings encountered for specified document
tidy_config_count    Returns the Number of Tidy configuration errors encountered for specified document
tidy_error_count    Returns the Number of Tidy errors encountered for specified document
tidy_get_output    Return a string representing the parsed tidy markup
tidy_load_config    Load an ASCII Tidy configuration file with the specified encoding
tidy_reset_config    Restore Tidy configuration to default values
tidy_save_config    Save current settings to named file
tidy_setopt    Updates the configuration settings for the specified tidy document
tidy_set_encoding    Set the input/output character encoding for parsing markup
tidy_warning_count    Returns the Number of Tidy warnings encountered for specified document
time    返回当前的 Unix 时间戳
timezone_name_from_abbr    Returns the timezone name from abbreviation
timezone_version_get    Gets the version of the timezonedb
time_nanosleep    延缓执行若干秒和纳秒
time_sleep_until    使脚本睡眠到指定的时间为止。
tmpfile    建立一个临时文件
token_get_all    将提供的源码按 PHP 标记进行分割
token_name    获取提供的 PHP 解析器代号的符号名称
touch    设定文件的访问和修改时间
trader_acos    Vector Trigonometric ACos
trader_ad    Chaikin A/D Line
trader_add    Vector Arithmetic Add
trader_adosc    Chaikin A/D Oscillator
trader_adx    Average Directional Movement Index
trader_adxr    Average Directional Movement Index Rating
trader_apo    Absolute Price Oscillator
trader_aroon    Aroon
trader_aroonosc    Aroon Oscillator
trader_asin    Vector Trigonometric ASin
trader_atan    Vector Trigonometric ATan
trader_atr    Average True Range
trader_avgprice    Average Price
trader_bbands    Bollinger Bands
trader_beta    Beta
trader_bop    Balance Of Power
trader_cci    Commodity Channel Index
trader_cdl2crows    Two Crows
trader_cdl3blackcrows    Three Black Crows
trader_cdl3inside    Three Inside Up/Down
trader_cdl3linestrike    Three-Line Strike
trader_cdl3outside    Three Outside Up/Down
trader_cdl3starsinsouth    Three Stars In The South
trader_cdl3whitesoldiers    Three Advancing White Soldiers
trader_cdlabandonedbaby    Abandoned Baby
trader_cdladvanceblock    Advance Block
trader_cdlbelthold    Belt-hold
trader_cdlbreakaway    Breakaway
trader_cdlclosingmarubozu    Closing Marubozu
trader_cdlconcealbabyswall    Concealing Baby Swallow
trader_cdlcounterattack    Counterattack
trader_cdldarkcloudcover    Dark Cloud Cover
trader_cdldoji    Doji
trader_cdldojistar    Doji Star
trader_cdldragonflydoji    Dragonfly Doji
trader_cdlengulfing    Engulfing Pattern
trader_cdleveningdojistar    Evening Doji Star
trader_cdleveningstar    Evening Star
trader_cdlgapsidesidewhite    Up/Down-gap side-by-side white lines
trader_cdlgravestonedoji    Gravestone Doji
trader_cdlhammer    Hammer
trader_cdlhangingman    Hanging Man
trader_cdlharami    Harami Pattern
trader_cdlharamicross    Harami Cross Pattern
trader_cdlhighwave    High-Wave Candle
trader_cdlhikkake    Hikkake Pattern
trader_cdlhikkakemod    Modified Hikkake Pattern
trader_cdlhomingpigeon    Homing Pigeon
trader_cdlidentical3crows    Identical Three Crows
trader_cdlinneck    In-Neck Pattern
trader_cdlinvertedhammer    Inverted Hammer
trader_cdlkicking    Kicking
trader_cdlkickingbylength    Kicking
trader_cdlladderbottom    Ladder Bottom
trader_cdllongleggeddoji    Long Legged Doji
trader_cdllongline    Long Line Candle
trader_cdlmarubozu    Marubozu
trader_cdlmatchinglow    Matching Low
trader_cdlmathold    Mat Hold
trader_cdlmorningdojistar    Morning Doji Star
trader_cdlmorningstar    Morning Star
trader_cdlonneck    On-Neck Pattern
trader_cdlpiercing    Piercing Pattern
trader_cdlrickshawman    Rickshaw Man
trader_cdlrisefall3methods    Rising/Falling Three Methods
trader_cdlseparatinglines    Separating Lines
trader_cdlshootingstar    Shooting Star
trader_cdlshortline    Short Line Candle
trader_cdlspinningtop    Spinning Top
trader_cdlstalledpattern    Stalled Pattern
trader_cdlsticksandwich    Stick Sandwich
trader_cdltakuri    Takuri (Dragonfly Doji with very long lower shadow)
trader_cdltasukigap    Tasuki Gap
trader_cdlthrusting    Thrusting Pattern
trader_cdltristar    Tristar Pattern
trader_cdlunique3river    Unique 3 River
trader_cdlupsidegap2crows    Upside Gap Two Crows
trader_cdlxsidegap3methods    Upside/Downside Gap Three Methods
trader_ceil    Vector Ceil
trader_cmo    Chande Momentum Oscillator
trader_correl    Pearson’s Correlation Coefficient (r)
trader_cos    Vector Trigonometric Cos
trader_cosh    Vector Trigonometric Cosh
trader_dema    Double Exponential Moving Average
trader_div    Vector Arithmetic Div
trader_dx    Directional Movement Index
trader_ema    Exponential Moving Average
trader_errno    Get error code
trader_exp    Vector Arithmetic Exp
trader_floor    Vector Floor
trader_get_compat    Get compatibility mode
trader_get_unstable_period    Get unstable period
trader_ht_dcperiod    Hilbert Transform
trader_ht_dcphase    Hilbert Transform
trader_ht_phasor    Hilbert Transform
trader_ht_sine    Hilbert Transform
trader_ht_trendline    Hilbert Transform
trader_ht_trendmode    Hilbert Transform
trader_kama    Kaufman Adaptive Moving Average
trader_linearreg    Linear Regression
trader_linearreg_angle    Linear Regression Angle
trader_linearreg_intercept    Linear Regression Intercept
trader_linearreg_slope    Linear Regression Slope
trader_ln    Vector Log Natural
trader_log10    Vector Log10
trader_ma    Moving average
trader_macd    Moving Average Convergence/Divergence
trader_macdext    MACD with controllable MA type
trader_macdfix    Moving Average Convergence/Divergence Fix 12/26
trader_mama    MESA Adaptive Moving Average
trader_mavp    Moving average with variable period
trader_max    Highest value over a specified period
trader_maxindex    Index of highest value over a specified period
trader_medprice    Median Price
trader_mfi    Money Flow Index
trader_midpoint    MidPoint over period
trader_midprice    Midpoint Price over period
trader_min    Lowest value over a specified period
trader_minindex    Index of lowest value over a specified period
trader_minmax    Lowest and highest values over a specified period
trader_minmaxindex    Indexes of lowest and highest values over a specified period
trader_minus_di    Minus Directional Indicator
trader_minus_dm    Minus Directional Movement
trader_mom    Momentum
trader_mult    Vector Arithmetic Mult
trader_natr    Normalized Average True Range
trader_obv    On Balance Volume
trader_plus_di    Plus Directional Indicator
trader_plus_dm    Plus Directional Movement
trader_ppo    Percentage Price Oscillator
trader_roc    Rate of change : ((price/prevPrice)-1)*100
trader_rocp    Rate of change Percentage: (price-prevPrice)/prevPrice
trader_rocr    Rate of change ratio: (price/prevPrice)
trader_rocr100    Rate of change ratio 100 scale: (price/prevPrice)*100
trader_rsi    Relative Strength Index
trader_sar    Parabolic SAR
trader_sarext    Parabolic SAR
trader_set_compat    Set compatibility mode
trader_set_unstable_period    Set unstable period
trader_sin    Vector Trigonometric Sin
trader_sinh    Vector Trigonometric Sinh
trader_sma    Simple Moving Average
trader_sqrt    Vector Square Root
trader_stddev    Standard Deviation
trader_stoch    Stochastic
trader_stochf    Stochastic Fast
trader_stochrsi    Stochastic Relative Strength Index
trader_sub    Vector Arithmetic Subtraction
trader_sum    Summation
trader_t3    Triple Exponential Moving Average (T3)
trader_tan    Vector Trigonometric Tan
trader_tanh    Vector Trigonometric Tanh
trader_tema    Triple Exponential Moving Average
trader_trange    True Range
trader_trima    Triangular Moving Average
trader_trix    1-day Rate-Of-Change (ROC) of a Triple Smooth EMA
trader_tsf    Time Series Forecast
trader_typprice    Typical Price
trader_ultosc    Ultimate Oscillator
trader_var    Variance
trader_wclprice    Weighted Close Price
trader_willr    Williams’ %R
trader_wma    Weighted Moving Average
trait_exists    检查指定的 trait 是否存在
trigger_error    产生一个用户级别的 error/warning/notice 信息
trim    去除字符串首尾处的空白字符（或者其他字符）

u
函数    说明
uasort    使用用户自定义的比较函数对数组中的值进行排序并保持索引关联
ucfirst    将字符串的首字母转换为大写
ucwords    将字符串中每个单词的首字母转换为大写
udm_add_search_limit    Add various search limits
udm_alloc_agent    Allocate mnoGoSearch session
udm_alloc_agent_array    Allocate mnoGoSearch session
udm_api_version    Get mnoGoSearch API version
udm_cat_list    Get all the categories on the same level with the current one
udm_cat_path    Get the path to the current category
udm_check_charset    Check if the given charset is known to mnogosearch
udm_clear_search_limits    Clear all mnoGoSearch search restrictions
udm_crc32    Return CRC32 checksum of given string
udm_errno    Get mnoGoSearch error number
udm_error    Get mnoGoSearch error message
udm_find    Perform search
udm_free_agent    Free mnoGoSearch session
udm_free_ispell_data    Free memory allocated for ispell data
udm_free_res    Free mnoGoSearch result
udm_get_doc_count    Get total number of documents in database
udm_get_res_field    Fetch a result field
udm_get_res_param    Get mnoGoSearch result parameters
udm_hash32    Return Hash32 checksum of given string
udm_load_ispell_data    Load ispell data
udm_set_agent_param    Set mnoGoSearch agent session parameters
uksort    使用用户自定义的比较函数对数组中的键名进行排序
umask    改变当前的 umask
uniqid    生成一个唯一ID
unixtojd    转变Unix时间戳为Julian Day计数
unlink    删除文件
unpack    Unpack data from binary string
unregister_tick_function    De-register a function for execution on each tick
unserialize    从已存储的表示中创建 PHP 的值
unset    释放给定的变量
untaint    Untaint strings
uopz_backup    Backup a function
uopz_compose    Compose a class
uopz_copy    Copy a function
uopz_delete    Delete a function
uopz_extend    Extend a class at runtime
uopz_flags    Get or set flags on function or class
uopz_function    Creates a function at runtime
uopz_implement    Implements an interface at runtime
uopz_overload    Overload a VM opcode
uopz_redefine    Redefine a constant
uopz_rename    Rename a function at runtime
uopz_restore    Restore a previously backed up function
uopz_undefine    Undefine a constant
urldecode    解码已编码的 URL 字符串
urlencode    编码 URL 字符串
user_error    trigger_error 的别名
use_soap_error_handler    Set whether to use the SOAP error handler
usleep    以指定的微秒数延迟执行
usort    使用用户自定义的比较函数对数组中的值进行排序
utf8_decode    将用 UTF-8 方式编码的 ISO-8859-1 字符串转换成单字节的 ISO-8859-1 字符串。
utf8_encode    将 ISO-8859-1 编码的字符串转换为 UTF-8 编码
v
函数    说明
variant_abs    Returns the absolute value of a variant
variant_add    “Adds” two variant values together and returns the result
variant_and    Performs a bitwise AND operation between two variants
variant_cast    Convert a variant into a new variant object of another type
variant_cat    concatenates two variant values together and returns the result
variant_cmp    Compares two variants
variant_date_from_timestamp    Returns a variant date representation of a Unix timestamp
variant_date_to_timestamp    Converts a variant date/time value to Unix timestamp
variant_div    Returns the result from dividing two variants
variant_eqv    Performs a bitwise equivalence on two variants
variant_fix    Returns the integer portion of a variant
variant_get_type    Returns the type of a variant object
variant_idiv    Converts variants to integers and then returns the result from dividing them
variant_imp    Performs a bitwise implication on two variants
variant_int    Returns the integer portion of a variant
variant_mod    Divides two variants and returns only the remainder
variant_mul    Multiplies the values of the two variants
variant_neg    Performs logical negation on a variant
variant_not    Performs bitwise not negation on a variant
variant_or    Performs a logical disjunction on two variants
variant_pow    Returns the result of performing the power function with two variants
variant_round    Rounds a variant to the specified number of decimal places
variant_set    Assigns a new value for a variant object
variant_set_type    Convert a variant into another type “in-place”
variant_sub    Subtracts the value of the right variant from the left variant value
variant_xor    Performs a logical exclusion on two variants
var_dump    打印变量的相关信息
var_export    输出或返回一个变量的字符串表示
version_compare    对比两个「PHP 规范化」的版本数字字符串
vfprintf    将格式化字符串写入流
virtual    执行 Apache 子请求
vpopmail_add_alias_domain    Add an alias for a virtual domain
vpopmail_add_alias_domain_ex    Add alias to an existing virtual domain
vpopmail_add_domain    Add a new virtual domain
vpopmail_add_domain_ex    Add a new virtual domain
vpopmail_add_user    Add a new user to the specified virtual domain
vpopmail_alias_add    Insert a virtual alias
vpopmail_alias_del    Deletes all virtual aliases of a user
vpopmail_alias_del_domain    Deletes all virtual aliases of a domain
vpopmail_alias_get    Get all lines of an alias for a domain
vpopmail_alias_get_all    Get all lines of an alias for a domain
vpopmail_auth_user    Attempt to validate a username/domain/password
vpopmail_del_domain    Delete a virtual domain
vpopmail_del_domain_ex    Delete a virtual domain
vpopmail_del_user    Delete a user from a virtual domain
vpopmail_error    Get text message for last vpopmail error
vpopmail_passwd    Change a virtual user’s password
vpopmail_set_user_quota    Sets a virtual user’s quota
vprintf    输出格式化字符串
vsprintf    返回格式化字符串
w
函数    说明
wddx_add_vars    Add variables to a WDDX packet with the specified ID
wddx_deserialize    Unserializes a WDDX packet
wddx_packet_end    Ends a WDDX packet with the specified ID
wddx_packet_start    Starts a new WDDX packet with structure inside it
wddx_serialize_value    Serialize a single value into a WDDX packet
wddx_serialize_vars    Serialize variables into a WDDX packet
win32_continue_service    Resumes a paused service
win32_create_service    Creates a new service entry in the SCM database
win32_delete_service    Deletes a service entry from the SCM database
win32_get_last_control_message    Returns the last control message that was sent to this service
win32_pause_service    Pauses a service
win32_ps_list_procs    List running processes
win32_ps_stat_mem    Stat memory utilization
win32_ps_stat_proc    Stat process
win32_query_service_status    Queries the status of a service
win32_set_service_status    Update the service status
win32_start_service    Starts a service
win32_start_service_ctrl_dispatcher    Registers the script with the SCM, so that it can act as the service with the given name
win32_stop_service    Stops a service
wincache_fcache_fileinfo    Retrieves information about files cached in the file cache
wincache_fcache_meminfo    Retrieves information about file cache memory usage
wincache_lock    Acquires an exclusive lock on a given key
wincache_ocache_fileinfo    Retrieves information about files cached in the opcode cache
wincache_ocache_meminfo    Retrieves information about opcode cache memory usage
wincache_refresh_if_changed    Refreshes the cache entries for the cached files
wincache_rplist_fileinfo    Retrieves information about resolve file path cache
wincache_rplist_meminfo    Retrieves information about memory usage by the resolve file path cache
wincache_scache_info    Retrieves information about files cached in the session cache
wincache_scache_meminfo    Retrieves information about session cache memory usage
wincache_ucache_add    Adds a variable in user cache only if variable does not already exist in the cache
wincache_ucache_cas    Compares the variable with old value and assigns new value to it
wincache_ucache_clear    Deletes entire content of the user cache
wincache_ucache_dec    Decrements the value associated with the key
wincache_ucache_delete    Deletes variables from the user cache
wincache_ucache_exists    Checks if a variable exists in the user cache
wincache_ucache_get    Gets a variable stored in the user cache
wincache_ucache_inc    Increments the value associated with the key
wincache_ucache_info    Retrieves information about data stored in the user cache
wincache_ucache_meminfo    Retrieves information about user cache memory usage
wincache_ucache_set    Adds a variable in user cache and overwrites a variable if it already exists in the cache
wincache_unlock    Releases an exclusive lock on a given key
wordwrap    打断字符串为指定数量的字串
x
函数    说明
xattr_get    Get an extended attribute
xattr_list    Get a list of extended attributes
xattr_remove    Remove an extended attribute
xattr_set    Set an extended attribute
xattr_supported    Check if filesystem supports extended attributes
xdiff_file_bdiff    Make binary diff of two files
xdiff_file_bdiff_size    Read a size of file created by applying a binary diff
xdiff_file_bpatch    Patch a file with a binary diff
xdiff_file_diff    Make unified diff of two files
xdiff_file_diff_binary    Alias of xdiff_file_bdiff
xdiff_file_merge3    Merge 3 files into one
xdiff_file_patch    Patch a file with an unified diff
xdiff_file_patch_binary    Alias of xdiff_file_bpatch
xdiff_file_rabdiff    Make binary diff of two files using the Rabin’s polynomial fingerprinting algorithm
xdiff_string_bdiff    Make binary diff of two strings
xdiff_string_bdiff_size    Read a size of file created by applying a binary diff
xdiff_string_bpatch    Patch a string with a binary diff
xdiff_string_diff    Make unified diff of two strings
xdiff_string_diff_binary    Alias of xdiff_string_bdiff
xdiff_string_merge3    Merge 3 strings into one
xdiff_string_patch    Patch a string with an unified diff
xdiff_string_patch_binary    Alias of xdiff_string_bpatch
xdiff_string_rabdiff    Make binary diff of two strings using the Rabin’s polynomial fingerprinting algorithm
xhprof_disable    停止 xhprof 分析器
xhprof_enable    启动 xhprof 性能分析器
xhprof_sample_disable    停止 xhprof 性能采样分析器
xhprof_sample_enable    以采样模式启动 XHProf 性能分析
xmlrpc_decode    将 XML 译码为 PHP 本身的类型
xmlrpc_decode_request    将 XML 译码为 PHP 本身的类型
xmlrpc_encode    为 PHP 的值生成 XML
xmlrpc_encode_request    为 PHP 的值生成 XML
xmlrpc_get_type    为 PHP 的值获取 xmlrpc 的类型
xmlrpc_is_fault    Determines if an array value represents an XMLRPC fault
xmlrpc_parse_method_descriptions    将 XML 译码成方法描述的列表
xmlrpc_server_add_introspection_data    添加自我描述的文档
xmlrpc_server_call_method    解析 XML 请求同时调用方法
xmlrpc_server_create    创建一个 xmlrpc 服务端
xmlrpc_server_destroy    销毁服务端资源
xmlrpc_server_register_introspection_callback    注册一个 PHP 函数用于生成文档
xmlrpc_server_register_method    注册一个 PHP 函数用于匹配 xmlrpc 方法名
xmlrpc_set_type    为一个 PHP 字符串值设置 xmlrpc 的类型、base64 或日期时间
xml_error_string    获取 XML 解析器的错误字符串
xml_get_current_byte_index    获取 XML 解析器的当前字节索引
xml_get_current_column_number    获取 XML 解析器的当前列号
xml_get_current_line_number    获取 XML 解析器的当前行号
xml_get_error_code    获取 XML 解析器错误代码
xml_parse    开始解析一个 XML 文档
xml_parser_create    建立一个 XML 解析器
xml_parser_create_ns    生成一个支持命名空间的 XML 解析器
xml_parser_free    释放指定的 XML 解析器
xml_parser_get_option    从 XML 解析器获取选项设置信息
xml_parser_set_option    为指定 XML 解析进行选项设置
xml_parse_into_struct    将 XML 数据解析到数组中
xml_set_character_data_handler    建立字符数据处理器
xml_set_default_handler    建立默认处理器
xml_set_element_handler    建立起始和终止元素处理器
xml_set_end_namespace_decl_handler    建立终止命名空间声明处理器
xml_set_external_entity_ref_handler    建立外部实体指向处理器
xml_set_notation_decl_handler    建立注释声明处理器
xml_set_object    在对象中使用 XML 解析器
xml_set_processing_instruction_handler    建立处理指令（PI）处理器
xml_set_start_namespace_decl_handler    建立起始命名空间声明处理器
xml_set_unparsed_entity_decl_handler    建立未解析实体定义声明处理器
y
函数    说明
yaml_emit    Returns the YAML representation of a value
yaml_emit_file    Send the YAML representation of a value to a file
yaml_parse    Parse a YAML stream
yaml_parse_file    Parse a YAML stream from a file
yaml_parse_url    Parse a Yaml stream from a URL
yaz_addinfo    Returns additional error information
yaz_ccl_conf    Configure CCL parser
yaz_ccl_parse    Invoke CCL Parser
yaz_close    Close YAZ connection
yaz_connect    Prepares for a connection to a Z39.50 server
yaz_database    Specifies the databases within a session
yaz_element    Specifies Element-Set Name for retrieval
yaz_errno    Returns error number
yaz_error    Returns error description
yaz_es    Prepares for an Extended Service Request
yaz_es_result    Inspects Extended Services Result
yaz_get_option    Returns value of option for connection
yaz_hits    Returns number of hits for last search
yaz_itemorder    Prepares for Z39.50 Item Order with an ILL-Request package
yaz_present    Prepares for retrieval (Z39.50 present)
yaz_range    Specifies a range of records to retrieve
yaz_record    Returns a record
yaz_scan    Prepares for a scan
yaz_scan_result    Returns Scan Response result
yaz_schema    Specifies schema for retrieval
yaz_search    Prepares for a search
yaz_set_option    Sets one or more options for connection
yaz_sort    Sets sorting criteria
yaz_syntax    Specifies the preferred record syntax for retrieval
yaz_wait    Wait for Z39.50 requests to complete
yp_all    Traverse the map and call a function on each entry
yp_cat    Return an array containing the entire map
yp_errno    Returns the error code of the previous operation
yp_err_string    Returns the error string associated with the given error code
yp_first    Returns the first key-value pair from the named map
yp_get_default_domain    Fetches the machine’s default NIS domain
yp_master    Returns the machine name of the master NIS server for a map
yp_match    Returns the matched line
yp_next    Returns the next key-value pair in the named map
yp_order    Returns the order number for a map
z
函数    说明
zend_logo_guid    获取 Zend guid
zend_thread_id    返回当前线程的唯一识别符
zend_version    获取当前 Zend 引擎的版本
zip_close    关闭一个ZIP档案文件
zip_entry_close    关闭目录项
zip_entry_compressedsize    检索目录项压缩过后的大小
zip_entry_compressionmethod    检索目录实体的压缩方法
zip_entry_filesize    检索目录实体的实际大小
zip_entry_name    检索目录项的名称
zip_entry_open    打开用于读取的目录实体
zip_entry_read    读取一个打开了的压缩目录实体
zip_open    打开ZIP存档文件
zip_read    读取ZIP存档文件中下一项
zlib_decode    Uncompress any raw/gzip/zlib encoded data
zlib_encode    Compress data with the specified encoding
zlib_get_coding_type    Returns the coding type used for output compression