3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function p($a, $b) { echo $a; echo '--'; echo $b; } p($a, $b='abc');
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: a in /in/K3q7g on line 10 --abc
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/K3q7g on line 10 --abc