3v4l.org

run code in 300+ PHP versions simultaneously
<?php function cmp($a, $b) { return strcmp($a, $b); } $result = array(3, 2, 5, 6, 1); usort($result, "cmp"); echo '<pre>'; print_r($result); echo '</pre>';

preferences:
37.4 ms | 402 KiB | 5 Q