3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = $a; var_dump($a); ?>
based on q7BhT
Output for 5.0.4 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: a in /in/FAdK3 on line 2 NULL
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/FAdK3 on line 2 NULL