3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $m = 1; $GLOBALS = array(); unset($GLOBALS["m"]); var_dump($m);
Output for 4.3.0 - 5.6.28, 7.0.0 - 7.1.0
int(1)
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: m in /in/K0PAk on line 4 NULL