3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $tab = array('am' => 54, 'cd' => 54, 'ps' => 54, 'pv' => 54); echo count(array_unique($tab));
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
1
Output for hhvm-3.10.0

Process exited with code 153.