3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $regsource = 'reg.ddd.site.ru'; $a = explode('.',$regsource); unset($a[0]); echo $redirect_host = implode('.',$a).'/';
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
ddd.site.ru/