3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $controller = 'some_name'; $$controller = function() { echo "hi"; }; function something() { // call some_name() here }
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.1.0 - 7.3.0rc3