3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo date('W');
Output for 4.4.1 - 4.4.9, 5.0.5 - 7.1.0
01
Output for 4.3.0 - 4.4.0, 5.0.0 - 5.0.4
1