3v4l.org

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