run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match('/a-z/', 'Hello', $match); var_dump($match);

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

Output for Typed properties v2
array(0) { }
Output for Array change keys
array(0) { }
Output for Lexical anon
array(0) { }

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