3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/\\\(.+)$/i', '\Trig\\1', 'asd\qwer\thgsd\Boom');
based on LYfZm
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
asd\Trigqwer\thgsd\Boom