run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = ['array' => 1]; var_dump(array_walk($a, 'is_array'));

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for Arrow functions
Warning: is_array() expects exactly 1 parameter, 2 given in /in/2JthJ on line 5 bool(true)

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page