3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump($y);
Output for 5.6.0 - 5.6.38, hhvm-3.15.4 - 3.21.3, 7.0.0 - 7.2.10
Notice: Undefined variable: y in /in/s6bS7 on line 3 NULL
Output for hhvm-3.22.0
Notice: Undefined variable: y in /in/s6bS7 on line -1 NULL