3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo = function () use (&$foo) { return $foo;}; var_dump($foo() == $foo);
based on YQE44
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0rc3
bool(true)