3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php if($x === null) echo "test";
Output for 5.0.4 - 7.1.7
Notice: Undefined variable: x in /in/V0MWg on line 3 test
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: x in /in/V0MWg on line 3 test