php - 重组(过滤和展平)数组的每一行

Question

好吧，我有这个数组 $city :

[2] => Array
    (
        [0] => Array
            (
                [0] => fr
                [1] => paris
                [2] => a8
            )

        [1] => 0
        [2] => 116729
    )

[3] => Array
    (
        [0] => Array
            (
                [0] => fr
                [1] => marseille
                [2] => b8
            )

        [1] => 0
        [2] => 12898
    )

[4] => Array
    (
        [0] => Array
            (
                [0] => fr
                [1] => lyon
                [2] => b9
            )

        [1] => 0
        [2] => 8608
    )

等等...我正在尝试将其转换为:

[2] => Array
    (
        [0] => fr
        [1] => paris
        [2] => 0
        [3] => 116729
    )

[3] => Array
    (
        [0] => fr
        [1] => marseille
        [2] => 0
        [3] => 12898
    )

[4] => Array
    (
        [0] => fr
        [1] => lyon
        [2] => 0
        [3] => 8608
    )

这是我的做法:

foreach ($city as $key => $value){
$city[$key][0] = $city[$key][0][0];
array_splice( $city[$key], 1, 0, $city[$key][0][1] );
 }

但这里的问题是结果数组:

[2] => Array
    (
        [0] => fr
        [1] => r
        [2] => 0
        [5] => 0
    )

[3] => Array
    (
        [0] => fr
        [1] => r
        [2] => 0
        [5] => 0
    )

[4] => Array
    (
        [0] => fr
        [1] => r
        [2] => 0
        [5] => 0
    )

我的代码中有什么错误，我可以修复它吗？

Answer 1

您可以使用 array_map 代替 foreach:

$result = array_map(
    function ($v) { return array_merge(array_slice($v[0], 0, 2), array_slice($v, 1)); },
    $array
);

Demo