3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 'b'; $b = 'c'; $c = 'd'; $d = 'e'; $e = 'f'; $f = 'hi'; function hi() { echo 'hello'; } echo ($$$$$$a)();
based on 5TJmq
Output for 7.0.0 - 7.2.6
hello
Output for 5.3.20 - 5.6.28
Parse error: syntax error, unexpected '(', expecting ',' or ';' in /in/StDmJ on line 14
Process exited with code 255.