3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 1; var_dump($a, $a );
Output for 5.5.0 - 7.2.0
Notice: Undefined variable: a in /in/SVLhn on line 5 NULL int(1)
Output for 4.3.0 - 5.4.45
NULL int(1)