Question

嗨我有以下数组我将下面的列表转换为基于索引的新列表集...如水平到垂直方式

mainArray['a'] = [1,2,3,4];
mainArray['b'] = [4,5,6,7];
mainArray['c'] = [7,8,9,10];
mainArray['d'] = [10,11,12,13];

我需要简短的操作来使它像

[1,4,7,10][2,5,8,11][3,6,9,12][4,7,10,13]

Answer 1

这可能就是你要找的东西：

<?php
$input = [
    'a' => [1,2,3,4],
    'b' => [4,5,6,7],
    'c' => [7,8,9,10],
    'd' => [10,11,12,13]
];
$output = [];
array_walk($input, function($entry) use (&$output) {
    foreach ($entry as $key=>$val) {
        $output[$key][] = $val;
    }
});
print_r($output);

另一种选择是保守迭代（我认为由于各种原因它很难看）：

<?php
$input = [
    'a' => [1,2,3,4],
    'b' => [4,5,6,7],
    'c' => [7,8,9,10],
    'd' => [10,11,12,13]
];
$output = [];
for ($i=0; $i<count($input['a']); $i++) {
    $output[] = array_column($input, $i);
}
print_r($output);

上述代码的输出为：

Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 4
            [2] => 7
            [3] => 10
        )

    [1] => Array
        (
            [0] => 2
            [1] => 5
            [2] => 8
            [3] => 11
        )

    [2] => Array
        (
            [0] => 3
            [1] => 6
            [2] => 9
            [3] => 12
        )

    [3] => Array
        (
            [0] => 4
            [1] => 7
            [2] => 10
            [3] => 13
        )

)

将数组合并到

1 个答案: