3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $name = 'fo"o'; echo preg_replace( '/[\s\(\)"\\\\]/', '\\\1', $name );
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
fo\1o
Output for hhvm-3.10.0

Process exited with code 153.