Form validation regex_match

[eluser]Perkin5[/eluser]
I tried copy/pasting your suggestion into the method but I still get the same error message :-(

Also this php error is thrown


A PHP Error was encountered

Severity: Warning

Message: preg_match() [function.preg-match]: No ending delimiter '/' found

Filename: libraries/Form_validation.php

Line Number: 911

Any ideas? Strange as the delimiter is there.