Access array key using uasort in PHP

Question

If have a rather basic uasort function in PHP that looks like this:

uasort($arr, function($a, $b) {
                if ($a > $b)
                     


        

Answer 1

uksort($arr, function ($a, $b) use ($arr) {
    return $arr[$a] - $arr[$b] ?: $a - $b;
});

You can get the values by the keys, so use uksort which gives you the keys. Replace $a - $b with your appropriate magic, here it's just sorting by the key's value.