3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if ($blah && (boolean) $blah) { var_dump('yes'); }
based on iPlM2
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: blah in /in/jiqt1 on line 5
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: blah in /in/jiqt1 on line 5