[PHP & MySQL] Problema link

[Sbarboff2005]

ho trovato questo script per anonimizzare i link sulla board MyBB 1.4.9, però ho notato che dentro ai tag non me li prende, ce qualcuno che sa migliorare questo script?

se non uso i tag funziona mi mette davanti al link l'indirizzo anonim.to e poi il link del post, ma se il link si trova dentro il tag non me lo prende!

<?php
$plugins->add_hook("parse_message", "linkanonymizer_run");

function linkanonymizer_info()
{
    return array(
        "name"        => "Link Anonymizer",
        "description"    => "Anonymizes Links in Threads",
        "website"        => "",
        "author"        => ".:Sahil:.",
        "authorsite"    => "",
        "version"        => "0.0.2",
    );
}

function linkanonymizer_activate()
{
}

function linkanonymizer_deactivate()
{
}

function linkanonymizer_run($message)
{

    if (preg_match_all("/(\<a href=\")(.[^\"]*)/i", $message, $matches))
    {
        $preg_search = array();
        $preg_replace = array();

        //If you leave this setting blank, the value for myBB Settings Cookie Domain will be used.
        //Use all the values separated by space
        //example
        //$ignore_these = "domain.com [url]www.domain.com[/url]";
        $ignore_these = "";

        $should_force = 1;

        $ignore_links = ($ignore_these ? explode(" ", $ignore_these) : ($mybb->settings['cookiedomain'] ? array($mybb->settings['cookiedomain']) : array($_SERVER['SERVER_NAME'])));

        foreach ($matches[2] AS $key=>$rawurl)
        {
            //Testing Begin
            // If we have any from $ignore_url, leave that as it is
            if (($parsed_url = @parse_url($rawurl)) !== false)
            {
                $link = $parsed_url['host'];

                //Ignore the link if it has local address or ignored link
                foreach ($ignore_links AS $ignore_link)
                {
                    //echo "$ignore_link
";
                    if (substr($ignore_link, 0, 1) == ".")
                    {
                        if (preg_match("/$ignore_link$/i", $link))
                        {
                            continue 2;
                        }
                    }
                    else
                    {
                        if (strtolower($ignore_link) == strtolower($link))
                        {
                            continue 2;
                        }
                    }
                }
            }
            else
            {
                if ($should_force != 1)
                {
                    continue;
                }
            }

            //Testing end

            $anonymurl = "http://www.anonym.to/?" . $rawurl;
            $preg_search["$rawurl"] = "<a href=\"$rawurl";
            $preg_replace["$rawurl"] = "<a href=\"" . $anonymurl;
        }


        if ($preg_search)
        {
            return str_replace($preg_search, $preg_replace, $message);
        }
    }

}

?>