3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $heading == 'h2'; echo ++$heading; ?>
based on jLDnB
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: heading in /in/QjSiU on line 2 Notice: Undefined variable: heading in /in/QjSiU on line 4 1
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: heading in /in/QjSiU on line 2 Notice: Undefined variable: heading in /in/QjSiU on line 4 1