转换为 JSON 格式
用 json_encode() 将数组转为 JSON，适合 API 或数据交换：
$json = json_encode($array, JSON_PRETTY_PRINT);
echo $json;
输出结果：
{
"a": 1,
"b": 2,
"c": 3
}
例子：
原array：
Array ( [0] => Array ( [0] => 8 [1] => 19 [2] => 2 [3] => 3 [4] => 1 [5] => 6 [6] => 7 [7] => 11 [8] => 8000 [9] => 5 ) [1] => Array ( [0] => 9 [1] => 20 [2] => 3 [3] => 4 [4] => 2 [5] => 5000 [6] => 8 [7] => 12 [8] => 1 [9] => 6 ) [2] => Array ( [0] => 10 [1] => 21 [2] => 4 [3] => 5 [4] => 3 [5] => 5000 [6] => 9 [7] => 13 [8] => 2 [9] => 7 ) [3] => Array ( [0] => 11 [1] => 22 [2] => 5 [3] => 6 [4] => 4 [5] => 1 [6] => 10 [7] => 14 [8] => 8000 [9] => 8 ) [4] => Array ( [0] => 12 [1] => 23 [2] => 6 [3] => 7 [4] => 4000 [5] => 2 [6] => 11 [7] => 15 [8] => 1 [9] => 9 ) [5] => Array ( [0] => 13 [1] => 24 [2] => 7 [3] => 8 [4] => 1 [5] => 3 [6] => 12 [7] => 7000 [8] => 2 [9] => 10 ) [6] => Array ( [0] => 14 [1] => 25 [2] => 8 [3] => 9 [4] => 2 [5] => 5000 [6] => 13 [7] => 1 [8] => 3 [9] => 11 ) [7] => Array ( [0] => 15 [1] => 26 [2] => 9 [3] => 10 [4] => 4000 [5] => 1 [6] => 14 [7] => 2 [8] => 4 [9] => 12 ) [8] => Array ( [0] => 16 [1] => 27 [2] => 10 [3] => 11 [4] => 4000 [5] => 2 [6] => 15 [7] => 3 [8] => 5 [9] => 13 ) [9] => Array ( [0] => 0 [1] => 28 [2] => 11 [3] => 12 [4] => 1 [5] => 3 [6] => 16 [7] => 4 [8] => 6 [9] => 14 ) [10] => Array ( [0] => 0 [1] => 29 [2] => 12 [3] => 13 [4] => 2 [5] => 4 [6] => 17 [7] => 5 [8] => 7 [9] => 15 ) [11] => Array ( [0] => 1 [1] => 30 [2] => 13 [3] => 3000 [4] => 3 [5] => 5 [6] => 18 [7] => 6 [8] => 8 [9] => 16 ) [12] => Array ( [0] => 2 [1] => 31 [2] => 14 [3] => 3000 [4] => 4 [5] => 6 [6] => 19 [7] => 7 [8] => 9 [9] => 17 ) [13] => Array ( [0] => 3 [1] => 32 [2] => 2000 [3] => 1 [4] => 5 [5] => 7 [6] => 20 [7] => 8 [8] => 10 [9] => 18 ) [14] => Array ( [0] => 4 [1] => 33 [2] => 1 [3] => 2 [4] => 6 [5] => 8 [6] => 21 [7] => 7000 [8] => 11 [9] => 19 ) [15] => Array ( [0] => 5 [1] => 34 [2] => 2 [3] => 3 [4] => 7 [5] => 9 [6] => 22 [7] => 1 [8] => 8000 [9] => 20 ) [16] => Array ( [0] => 0 [1] => 35 [2] => 3 [3] => 4 [4] => 8 [5] => 10 [6] => 23 [7] => 2 [8] => 1 [9] => 21 ) [17] => Array ( [0] => 1 [1] => 36 [2] => 4 [3] => 5 [4] => 9 [5] => 11 [6] => 6000 [7] => 3 [8] => 2 [9] => 22 ) [18] => Array ( [0] => 2 [1] => 37 [2] => 5 [3] => 6 [4] => 10 [5] => 12 [6] => 1 [7] => 4 [8] => 3 [9] => 9000 ) [19] => Array ( [0] => 3 [1] => 38 [2] => 6 [3] => 7 [4] => 11 [5] => 13 [6] => 6000 [7] => 5 [8] => 4 [9] => 1 ) [20] => Array ( [0] => 0 [1] => 39 [2] => 7 [3] => 8 [4] => 12 [5] => 14 [6] => 1 [7] => 6 [8] => 5 [9] => 2 ) [21] => Array ( [0] => 1 [1] => 40 [2] => 2000 [3] => 9 [4] => 13 [5] => 15 [6] => 2 [7] => 7 [8] => 6 [9] => 3 ) [22] => Array ( [0] => 2 [1] => 1000 [2] => 1 [3] => 10 [4] => 14 [5] => 16 [6] => 3 [7] => 8 [8] => 7 [9] => 4 ) [23] => Array ( [0] => 3 [1] => 1000 [2] => 2 [3] => 11 [4] => 15 [5] => 17 [6] => 4 [7] => 9 [8] => 8 [9] => 5 ) [24] => Array ( [0] => 4 [1] => 1000 [2] => 3 [3] => 12 [4] => 16 [5] => 18 [6] => 5 [7] => 10 [8] => 9 [9] => 6 ) [25] => Array ( [0] => 5 [1] => 1 [2] => 4 [3] => 13 [4] => 17 [5] => 19 [6] => 6 [7] => 11 [8] => 8000 [9] => 7 ) [26] => Array ( [0] => 6 [1] => 2 [2] => 5 [3] => 14 [4] => 18 [5] => 20 [6] => 7 [7] => 7000 [8] => 1 [9] => 8 ) [27] => Array ( [0] => 7 [1] => 3 [2] => 6 [3] => 15 [4] => 19 [5] => 21 [6] => 6000 [7] => 1 [8] => 2 [9] => 9 ) [28] => Array ( [0] => 8 [1] => 4 [2] => 7 [3] => 16 [4] => 20 [5] => 22 [6] => 1 [7] => 2 [8] => 8000 [9] => 10 ) [29] => Array ( [0] => 9 [1] => 5 [2] => 8 [3] => 17 [4] => 21 [5] => 23 [6] => 2 [7] => 7000 [8] => 1 [9] => 11 ) [30] => Array ( [0] => 10 [1] => 6 [2] => 9 [3] => 18 [4] => 4000 [5] => 24 [6] => 3 [7] => 1 [8] => 2 [9] => 12 ) [31] => Array ( [0] => 11 [1] => 7 [2] => 2000 [3] => 19 [4] => 1 [5] => 25 [6] => 4 [7] => 2 [8] => 3 [9] => 13 ) [32] => Array ( [0] => 12 [1] => 1000 [2] => 1 [3] => 20 [4] => 2 [5] => 26 [6] => 5 [7] => 3 [8] => 4 [9] => 14 ) [33] => Array ( [0] => 13 [1] => 1000 [2] => 2 [3] => 21 [4] => 3 [5] => 27 [6] => 6 [7] => 4 [8] => 5 [9] => 15 ) [34] => Array ( [0] => 14 [1] => 1 [2] => 3 [3] => 22 [4] => 4 [5] => 28 [6] => 7 [7] => 5 [8] => 6 [9] => 9000 ) [35] => Array ( [0] => 0 [1] => 2 [2] => 4 [3] => 23 [4] => 5 [5] => 29 [6] => 8 [7] => 6 [8] => 7 [9] => 1 ) [36] => Array ( [0] => 1 [1] => 3 [2] => 5 [3] => 24 [4] => 6 [5] => 30 [6] => 6000 [7] => 7 [8] => 8 [9] => 2 ) [37] => Array ( [0] => 0 [1] => 4 [2] => 6 [3] => 25 [4] => 7 [5] => 31 [6] => 1 [7] => 8 [8] => 9 [9] => 3 ) [38] => Array ( [0] => 1 [1] => 5 [2] => 7 [3] => 26 [4] => 4000 [5] => 32 [6] => 2 [7] => 9 [8] => 10 [9] => 4 ) [39] => Array ( [0] => 2 [1] => 6 [2] => 8 [3] => 27 [4] => 1 [5] => 5000 [6] => 3 [7] => 10 [8] => 11 [9] => 5 ) [40] => Array ( [0] => 3 [1] => 7 [2] => 9 [3] => 28 [4] => 2 [5] => 1 [6] => 6000 [7] => 11 [8] => 12 [9] => 6 ) [41] => Array ( [0] => 4 [1] => 8 [2] => 10 [3] => 29 [4] => 3 [5] => 2 [6] => 6000 [7] => 12 [8] => 13 [9] => 7 ) [42] => Array ( [0] => 5 [1] => 9 [2] => 11 [3] => 30 [4] => 4 [5] => 3 [6] => 1 [7] => 13 [8] => 8000 [9] => 8 ) [43] => Array ( [0] => 6 [1] => 1000 [2] => 12 [3] => 31 [4] => 5 [5] => 4 [6] => 2 [7] => 14 [8] => 1 [9] => 9 ) [44] => Array ( [0] => 7 [1] => 1 [2] => 13 [3] => 32 [4] => 6 [5] => 5 [6] => 3 [7] => 15 [8] => 2 [9] => 9000 ) [45] => Array ( [0] => 8 [1] => 2 [2] => 2000 [3] => 33 [4] => 7 [5] => 6 [6] => 4 [7] => 16 [8] => 3 [9] => 1 ) [46] => Array ( [0] => 9 [1] => 3 [2] => 1 [3] => 34 [4] => 8 [5] => 7 [6] => 5 [7] => 7000 [8] => 4 [9] => 2 ) [47] => Array ( [0] => 10 [1] => 4 [2] => 2 [3] => 35 [4] => 9 [5] => 8 [6] => 6000 [7] => 1 [8] => 5 [9] => 3 ) [48] => Array ( [0] => 11 [1] => 1000 [2] => 3 [3] => 36 [4] => 10 [5] => 9 [6] => 1 [7] => 2 [8] => 6 [9] => 4 ) [49] => Array ( [0] => 12 [1] => 1 [2] => 4 [3] => 37 [4] => 11 [5] => 10 [6] => 2 [7] => 3 [8] => 7 [9] => 9000 ) )
echo json_encode($arr1_all);
结果：
[[8,19,2,3,1,6,7,11,8000,5],[9,20,3,4,2,5000,8,12,1,6],[10,21,4,5,3,5000,9,13,2,7],[11,22,5,6,4,1,10,14,8000,8],[12,23,6,7,4000,2,11,15,1,9],[13,24,7,8,1,3,12,7000,2,10],[14,25,8,9,2,5000,13,1,3,11],[15,26,9,10,4000,1,14,2,4,12],[16,27,10,11,4000,2,15,3,5,13],[0,28,11,12,1,3,16,4,6,14],[0,29,12,13,2,4,17,5,7,15],[1,30,13,3000,3,5,18,6,8,16],[2,31,14,3000,4,6,19,7,9,17],[3,32,2000,1,5,7,20,8,10,18],[4,33,1,2,6,8,21,7000,11,19],[5,34,2,3,7,9,22,1,8000,20],[0,35,3,4,8,10,23,2,1,21],[1,36,4,5,9,11,6000,3,2,22],[2,37,5,6,10,12,1,4,3,9000],[3,38,6,7,11,13,6000,5,4,1],[0,39,7,8,12,14,1,6,5,2],[1,40,2000,9,13,15,2,7,6,3],[2,1000,1,10,14,16,3,8,7,4],[3,1000,2,11,15,17,4,9,8,5],[4,1000,3,12,16,18,5,10,9,6],[5,1,4,13,17,19,6,11,8000,7],[6,2,5,14,18,20,7,7000,1,8],[7,3,6,15,19,21,6000,1,2,9],[8,4,7,16,20,22,1,2,8000,10],[9,5,8,17,21,23,2,7000,1,11],[10,6,9,18,4000,24,3,1,2,12],[11,7,2000,19,1,25,4,2,3,13],[12,1000,1,20,2,26,5,3,4,14],[13,1000,2,21,3,27,6,4,5,15],[14,1,3,22,4,28,7,5,6,9000],[0,2,4,23,5,29,8,6,7,1],[1,3,5,24,6,30,6000,7,8,2],[0,4,6,25,7,31,1,8,9,3],[1,5,7,26,4000,32,2,9,10,4],[2,6,8,27,1,5000,3,10,11,5],[3,7,9,28,2,1,6000,11,12,6],[4,8,10,29,3,2,6000,12,13,7],[5,9,11,30,4,3,1,13,8000,8],[6,1000,12,31,5,4,2,14,1,9],[7,1,13,32,6,5,3,15,2,9000],[8,2,2000,33,7,6,4,16,3,1],[9,3,1,34,8,7,5,7000,4,2],[10,4,2,35,9,8,6000,1,5,3],[11,1000,3,36,10,9,1,2,6,4],[12,1,4,37,11,10,2,3,7,9000]]