run code in 200+ php & hhvm versions
Bugs & Features
<?php call_user_func(function () { echo 'hello world!'; });

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
hello world!
Output for Arrow functions
hello world!
Output for Object typehint
hello world!
Output for Array change keys
hello world!
Output for Lexical anon
hello world!

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