3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a="fuck of"; $$a = true; echo ${"fuck off"};
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: fuck off in /in/dhneJ on line 5
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: fuck off in /in/dhneJ on line 5