Plugin PHP help

[HMBeaty]

Ok, so I've been playing around with tearing a few modifications apart and trying to make it to where you have to have a minimum number of posts to post links in signatures. But, I'm a little stuck lol. This is what I have in my plugin so far. Hook location: profile_updatesignature_start

PHP Code:

$pagetext =& $this->fetch_field('pagetext', 'post');
$excludedugs = explode(",", $vbulletin->options['usml_siglink_exug']);
        if (!is_member_of($vbulletin->userinfo, $excludedugs))
        {
        if ($vbulletin->options['usml_siglink_enable'] && $vbulletin->userinfo['posts'] < $vbulletin->options['usml_siglink_minposts'])
        {
        if (stristr($pagetext,'http://') || stristr($pagetext,'www.') || stristr($pagetext,'@') || stristr($pagetext,'[URL') || stristr($pagetext,'[url') || stristr($pagetext,'.com') || stristr($pagetext,'.org') || stristr($pagetext,'.net') || stristr($pagetext,'.gov') || stristr($pagetext,'.biz') || stristr($pagetext,'.info') || stristr($pagetext,'.tv'))
        {
        standard_error(fetch_error('usml_siglink_msg', $vbulletin->userinfo['username'], $vbulletin->options['usml_siglink_minposts'], $vbulletin->userinfo['posts']));
        }
        }
        } 


Apparently what I have doesn't work. All I get is a blank white page. So a variable must be wrong and/or some additional code is needed, which I'm not sure what it is, or if the above is even correct to start with. So any guidance you can give me will be greatly appreciated

Thank you

--------------- Added [DATE]1302114824[/DATE] at [TIME]1302114824[/TIME] ---------------

Ok, quick update. There was an extra space in a bit of the code, so I removed that and now my signature gets saved again and I can still post links in the signature. So, now I need help trying to figure out what I need to add/edit/move to make it where users can't post links in their signatures until they reach a certain post count.

Thank you