worst sort

<?php

function worst_sort(array $input, bool $maintain_keys = true): array {
    $out = [];

    for($i = (int)(PHP_INT_MAX + 1); $i < PHP_INT_MAX; ++$i) {
        foreach ($input as $k => $v) {
            if ( $v === $i ) {
                if ( $maintain_keys ) {
                    $out[$k] = $v;
                } else {
                    $out[] = $v;
                }
                // unset($input[$k]); # don't modify array!
            }
        }
    }

    return $out;
}