3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $x = 1; if ($z == 5) echo 'not set';
based on jemjc
Output for 5.0.4 - 7.2.0
Notice: Undefined variable: z in /in/C76O3 on line 5
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: z in /in/C76O3 on line 5