public function parseUrl($text)
{
$text = preg_replace("#\\[url:{$this->uid}\\](.+?)\\[/url:{$this->uid}\\]#", "<a rel='nofollow' href='\\1'>\\1</a>", $text);
$text = preg_replace("#\\[url=(.+?):{$this->uid}\\]#", "<a rel='nofollow' href='\\1'>", $text);
$text = str_replace("[/url:{$this->uid}]", '</a>', $text);
return $text;
}