3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = array('1', '2', '3'); foreach ($arr as $key=>&$val) { if (count($arr)<4) array_push($arr, '999'); echo $val."\n"; }

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

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