3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php isset($$asd);
Output for 5.1.0 - 7.2.0
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: asd in /in/klf6q on line 2
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: asd in /in/klf6q on line 2