3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $foo;
Output for 5.4.0 - 5.6.30, 7.0.0 - 7.1.10
Output for hhvm-3.22.0
Notice: Undefined variable: foo in /in/N6UpT on line -1
Output for hhvm-3.10.1 - 3.21.3
Notice: Undefined variable: foo in /in/N6UpT on line 3