3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = '1234567890-=qwertyuiop[]\asdfghjkl;zxcvbnm,./~!@#$%^&*()_+QWERTYUIOP{}|ASDFGHJKL:"ZXCVBNM<>?'; $chars = "/\d|\W|_/g"; $string = preg_replace($chars, '', $string); echo $string;
based on FXND4
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_replace(): Unknown modifier 'g' in /in/AXe0S on line 5
Output for hhvm-3.12.0
Warning: Unknown modifier 'g': [/\d|\W|_/g] in /in/AXe0S on line 5
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.3.10
Warning: Unknown modifier 'g' in /in/AXe0S on line 5