PHP - 按键对多维数组进行排序 [英] PHP - sort multidimensional array by key

问题描述

我得到了一个多维数组，可能如下所示:

I got a multidimensional array which may look like this:

$array[1][0] = "string";
$array[0][1] = "anotherstring";
$array[0][0] = "thirdstring";
$array[1][1] = "fourthstring";

我想按键对这个数组进行排序，使其看起来像这样:

I want to sort this array by keys so it looks like this:

$array[0][0] = "thirdstring";
$array[0][1] = "anotherstring";
$array[1][0] = "string";
$array[1][1] = "fourthstring";

目前我正在使用以下程序:

At the moment I am using the following procedure:

ksort($array);
foreach ($array as $key => $value) {
        ksort($value);
        $array[$key] = $value;
}

这确实工作得很好，但也许有更好的(内置)函数来做到这一点?

This does work perfectly, but maybe there is a better (in-built) function to do this?

推荐答案

您可以通过以下方式缩短循环:

You can shorten your loop with:

ksort($array);
foreach($array as &$value) {
        ksort($value);
}

或者使用array_walk:

ksort($array);
array_walk($array, 'ksort');

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