wordpress删除重复文章一共有三种方法：
1. 插件：使用一款插件，名字叫做Delete Duplicate Posts
2. 操作数据库：
CREATE TABLE my_tmp AS SELECT MIN(ID) AS col1 FROM wp_posts GROUP BY post_title;
DELETE FROM wp_posts WHERE ID NOT IN (SELECT col1 FROM my_tmp);
DROP TABLE my_tmp;
DELETE FROM wp_posts WHERE ID NOT IN (SELECT col1 FROM my_tmp);
DROP TABLE my_tmp;
3.php程序删除
require(‘./wp-load.php’);
$strsql=”create table my_tmp as select min(ID) as col1 from cd_posts group by post_title”;
$strsql1=”delete from cd_posts where ID not in (select col1 from my_tmp)”;
$strsql2=”drop table my_tmp”;
$result=mysql_query($strsql);
$result=mysql_query($strsql1);
$result=mysql_query($strsql2);
$strsql=”create table my_tmp as select min(ID) as col1 from cd_posts group by post_title”;
$strsql1=”delete from cd_posts where ID not in (select col1 from my_tmp)”;
$strsql2=”drop table my_tmp”;
$result=mysql_query($strsql);
$result=mysql_query($strsql1);
$result=mysql_query($strsql2);
保存以上代码以为delete.php，放在根目录，想要删除重复文章的时候，访问这个文件就可以了