3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function match(string $a, string $b = '') { } match('a');
Output for 7.0.0 - 7.2.0
Output for 5.3.21 - 5.6.28
Fatal error: Default value for parameters with a class type hint can only be NULL in /in/vdYOe on line 2
Process exited with code 255.