3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = $y;
Output for 5.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: y in /in/7TPTr on line 2
Output for hhvm-3.10.0

Process exited with code 153.