3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function Add() { $x=20; $y=20; $z=$x+$y; } Add(); echo $z; ?>
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: z in /in/45W6A on line 9
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: z in /in/45W6A on line 9