3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo $hello;
Output for 5.3.28 - 5.3.29, 5.4.18 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: hello in /in/dlFr5 on line 2
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Notice: Undefined variable: hello in /in/jEP2L on line 2