3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php preg_replace('/ru\.www\./', 'ru.', 'ru.www.gorgany.com');
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0