3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(1,2,3,1,2,3); $b = array(1,2,3); var_dump(array_diff($b, $a));
based on NUqgS
Output for 4.3.0 - 7.2.0
array(0) { }