3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $xyz = '[]=a'; var_dump($x);
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: x in /in/bcLcK on line 4 NULL
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: x in /in/bcLcK on line 4 NULL