3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $url = "http://youtube.com"; $url = preg_replace("|([^\/]*)\/\/|i",'https://',$url); echo $url;
based on 8lc8F
Output for 4.3.0 - 7.2.0
https://youtube.com