3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(array_diff(array('a' => 'a'), array('b' => 'a')));
based on l9Vkb
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(0) { }