3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo yo;
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Notice: Use of undefined constant yo - assumed 'yo' in /in/XC3d0 on line 3 yo