3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $telefone = '(41) 4141-4141'; echo preg_match('0-9', $telefone);
Output for 4.3.11 - 7.2.0
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/vE9RQ on line 5
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/vE9RQ on line 5