3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $numStr = "100"; echo (bool) $numStr; echo "\n"; echo !!$num;
Output for 5.0.4 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
1 Notice: Undefined variable: num in /in/XQXhI on line 5
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.0.3
1 Notice: Undefined variable: num in /in/XQXhI on line 5