3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php print_r(preg_match("3883", '/^[a-zA-Z0-9\-\._@\+]{1,100}$/'));
based on 2hGhk
Output for 4.3.11 - 7.1.7
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/fDJOr on line 3
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/fDJOr on line 3