3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $input = array(4, "4", "3", 4, 3, "3", 3, 3, 3, 3, 3, 5, 5, 5, 5, 7, 7, 7, 7); echo count(array_unique($input));
Output for 4.3.0 - 7.2.0
4