3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function __autoload($c){echo $c;} echo (int) defined('foo::bar'); echo 'bar';
based on NNWPA
Output for 5.0.0 - 5.2.3, 5.2.13 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
foo0bar
Output for 5.2.4 - 5.2.12
foo Fatal error: Class 'foo' not found in /in/rkiAF on line 5
Process exited with code 255.
Output for 4.3.0 - 4.4.9
0bar