3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php declare(strict_types=1); function x(string $x = null) { } x(null);
Output for hhvm-3.15.4, 7.0.0 - 7.2.6
Output for 5.6.0 - 5.6.30
Warning: Unsupported declare 'strict_types' in /in/XBStu on line 2