3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 1; //$a = null; unset($a); echo $a . '+';
based on CsMse
Output for 5.0.4 - 7.1.7
Notice: Undefined variable: a in /in/uI42i on line 6 +
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/uI42i on line 6 +