3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo $x ?>
Output for 7.0.0 - 7.3.0alpha1
Notice: Undefined variable: x in /in/WYGeO on line 2
Output for 5.3.0 - 5.6.28
Notice: Undefined variable: x in /in/WYGeO on line 3