[JamesAB]

Nevermind. I found the missing \ character.

It works as:

PHP Code:

// Restrict URLs
if ($vbulletin->userinfo['posts'] < $vbulletin->userinfo['permissions']['postsforurls'] && preg_match('/(\[\/url\]|\[\/email\])/i', $post['message'])){
    $errors[] = fetch_error('no_urls_for_you', $vbulletin->userinfo['permissions']['postsforurls']);
}