3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php (function() { echo 'Foo'; })();
based on MsKnF
Output for 7.0.0 - 7.2.0
Foo
Output for 5.3.17 - 5.6.28
Parse error: syntax error, unexpected '(' in /in/8I2lK on line 3
Process exited with code 255.