3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "hello"; $$a = "world"; $$$a = "you guys"; echo $world;
based on RE7dg
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
you guys
Output for hhvm-3.10.0

Process exited with code 153.