3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $phone = '(512) 800-1728'; $phone = preg_replace('/\D+/', '', $phone); echo $phone; ?>
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
5128001728