3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function cmp($a, $b) { if ($a == $b) { return 0; } return ($a < $b) ? -1 : 1; } $result = array(3, 2, 5, 6, 1); usort($result, "cmp"); echo '<pre>'; print_r($result); echo '</pre>';
based on NctNO
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<pre>Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 5 [4] => 6 ) </pre>