3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(); $b = array(); echo array_diff($a, $b);
Output for 5.4.0 - 7.1.0
Notice: Array to string conversion in /in/7r57L on line 9 Array
Output for 4.3.0 - 5.3.29
Array