3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php error_reporting(-1); function test() { global $x; if($x===null) var_dump($x); } test();
based on 5fSq3
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
NULL