3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if('HK' == 0) { echo 'derp'; } var_dump($var);exit;
Output for 5.0.4 - 7.1.0
derp Notice: Undefined variable: var in /in/T87YM on line 5 NULL
Output for 4.3.0 - 5.0.3
derp Notice: Undefined variable: var in /in/T87YM on line 5 NULL