3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array('a','b','c'); $b = array_shift($a); $c = array_merge($a,$b); print_r($c);
Output for 5.0.0 - 7.2.0
Warning: array_merge(): Argument #2 is not an array in /in/hU4vS on line 4
Output for 4.3.0 - 4.4.9
Array ( [0] => b [1] => c [2] => a )