Topic: eror on add new html tag

hy punbbers..
i need ur help

here my code in parser.php

         $pattern[] = '#\[s\](.*?)\[/s\]#ms';
         $replace[] = '<span style=\"text-decoration:line-through\">$matches[1]</span>';

here my input to post

[url=http://zz.com][s]aaa[/s][/url]

here generate eror

Warning! The following errors must be corrected before your message can be posted:
[s] was opened within [u_rl], this is not allowed

what wrong with my pattern php? how to fix it?
please ur help ^^

sorry my BAD english T___T
Have a nice day >.<
(^____^)v

Re: eror on add new html tag

Which tag you 'd like to add?

This extension did not try?
HM Easy BBCodes
bbcode_html