3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/^(.+)$/s', 'Trig\\1', 'asd\qwer\thgsd\Boom');
based on HI6NP
Output for 4.3.0 - 7.1.0
Trigasd\qwer\thgsd\Boom