3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "hello"; $b = "hi"; $val = "a"; echo $$val; // outputs "hello" echo "\n"; $val = "b"; echo $$val; // outputs "hi"

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

Output for Arrow functions
hello hi
Output for Object typehint
hello hi
Output for Array change keys
hello hi
Output for Lexical anon
hello hi
Output for Typed properties
hello hi

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