3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(NULL, 1,-1,0,2,0,-2); asort($a, SORT_NUMERIC); print_r($a);
based on RHTjG
Output for hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [6] => -2 [2] => -1 [0] => [3] => 0 [5] => 0 [1] => 1 [4] => 2 )
Output for 4.3.0 - 5.6.28
Array ( [6] => -2 [2] => -1 [5] => 0 [3] => 0 [0] => [1] => 1 [4] => 2 )