PHP-按键对多维数组排序

Question

I got a multidimensional array which may look like this: 我有一个多维数组，看起来可能像这样：

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

I want to sort this array by keys so it looks like this: 我想按键排序此数组，所以它看起来像这样：

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

At the moment I am using the following procedure: 目前，我正在使用以下过程：

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

This does work perfectly, but maybe there is a better (in-built) function to do this? 这确实可以很好地工作，但是也许有更好的（内置）功能可以做到这一点？

Answer 1

You can shorten your loop with: 您可以使用以下方法缩短循环时间：

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

Or use array_walk : 或使用array_walk ：

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