3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_replace('/[^0-9.()+-\/*%^:]/./X', '', '/\\');
Output for 4.3.11 - 7.1.0
Warning: preg_replace(): Unknown modifier '.' in /in/CWncL on line 2
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier '.' in /in/CWncL on line 2