3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php declare(strict_types=1); function strict(int $number) { echo $number * 2; }
Output for hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0rc3
Output for 5.6.30
Warning: Unsupported declare 'strict_types' in /in/JpAuL on line 2