3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = false; var_dump((unset) $a);
based on JssW0
Output for 7.2.0
Deprecated: The (unset) cast is deprecated in /in/VPvI6 on line 3 NULL
Output for 4.3.0 - 7.1.10
NULL