3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $x = function() { return function () { echo 'hi'; }; }; // works: $x()->__invoke(); $x()();
based on C7vih
Output for 7.0.0 - 7.2.0
hi
Output for 5.3.19 - 5.6.28
Parse error: syntax error, unexpected '(' in /in/GnAaO on line 5
Process exited with code 255.