3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'a'; function foo() { var_dump($a); } foo();
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: a in /in/rHQC7 on line 6 NULL
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: a in /in/rHQC7 on line 6 NULL