3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $bar = 'foo'; function foo() { return $bar; } echo foo();
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: bar in /in/o1tfg on line 6
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: bar in /in/o1tfg on line 6