3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = function() { return function() { echo 3; }; }; ($a())();
based on NuZWK
Output for hhvm-3.12.14 - 3.17.3, 7.0.0 - 7.3.0alpha1
3
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected '(' in /in/lMTDs on line 8
Process exited with code 255.