Убрать кракозябры из ссылки

<?php
/*
 =====================================================
 dude Smart Leech module
 -----------------------------------------------------
 http://seodude.ru/
 =====================================================
*/
if(!defined('DATALIFEENGINE'))
{
    die("Hacking attempt!");
}

define("DUDE_SMART_LEECH_START", microtime(true));

$_dude_config = array_filter((array)@unserialize(file_get_contents(dirname(__FILE__)."/../cfg/leech.dat")));
$groupID = $user_group[$member_id['user_group']]['id'];

// [[ stupid dle algoritms hack
$content = ob_get_clean();
ob_start();

if(!@$_dude_config['debug'])
{
    $errlevel = error_reporting(0);
}

if($_dude_config['gopage'] && $_dude_config['gopage_url'])
{
    define("DUDE_OUT_PAGE_URL", "/".ltrim($_dude_config['gopage_url'], "/"));
}
else
{
    define("DUDE_OUT_PAGE_URL", "/engine/dude/index/leech_out.php");
}

preg_match_all('#\[forceleech\](.*?)\[/forceleech\]#ism',$content,$forceleech, PREG_SET_ORDER);
foreach($forceleech as $i=>$html)
{
    $replace = preg_replace('#\[\s*/?\s*noleech\s*\]#ism','', $html[1]);
    $content = str_replace($html[0], $replace, $content);
}

preg_match_all('#\[noleech\](.*?)\[/noleech\]#ism',$content,$noleech, PREG_SET_ORDER);
foreach($noleech as $i=>$html)
{
    $uniqid = "*".uniqid("noleech_")."*";
    $noleech[$i] = array($uniqid, $html[1]);

    $content = str_replace($html[0], $uniqid, $content);
}

if($_dude_config['enable'] && in_array($groupID, (array)@$_dude_config['groups']) !== false)
{
    $content = dude_smart_leech($content);
}

foreach($noleech as $nl)
{
    $content = str_replace($nl[0], $nl[1], $content);
}

$content .= "<!-- dude Smart Leech time: ".sprintf("%f",(microtime(true) - DUDE_SMART_LEECH_START) * 1000)." msec -->";
echo $content;

if(!@$_dude_config['debug'])
{
    error_reporting($errlevel);
}
// stupid dle algoritms hack ]]

function dude_smart_leech($content)
{
    global $_dude_config;

    $content = str_replace("{dude_leech}", "<a href=\"/\">dude Smart Leech</a>", $content);

    $tags = array();
    $links = array();
    if($_dude_config['rewrite_urls'])
    {
        $tags[] = "a";
        $links[] = "href";
    }
    if($_dude_config['rewrite_imgs'])
    {
        $tags[] = "img";
        $links[] = "src";
    }

    if(!$tags)
    {
        return $content;
    }

    $tags = "(".join("|", $tags).")";
    $links = "(?:".join("|", $links).")";

    if($_dude_config['use_list_black'] && $_dude_config['rewrite_urls'])
    {
        $content = preg_replace_callback("#(<a[^>]+?href\s*=\s*(\"|'))(https?://.+?)\\2(.*?>)(.*?)</a\s*>#ism", 'dude_smart_leech_rewrite_urls_black', $content);
    }

    $content = preg_replace_callback("#(<{$tags}[^>]+?$links\s*=\s*(\"|'))(https?://.+?)\\3(.*?>)#ism", 'dude_smart_leech_rewrite_urls', $content);

    return $content;
}

function dude_smart_leech_rewrite_urls($m)
{
    global $config;
    static $domain, $tags, $baseurl, $baseurllen;

    $m[4] = htmlspecialchars_decode($m[4]);
    
    if(!$domain)
    {
        $domain = strtolower($_SERVER['HTTP_HOST']);
        if(substr($domain, 0,4) == "www.")
        {
            $domain = substr($domain, 4);
        }

        $tags = array();
        $tags['a'] = "a";
        $tags['img'] = "i";

        $baseurl = rtrim($config['http_home_url'],"/")."/";
        $baseurllen = strlen($baseurl);
    }

    global $_dude_config;
    if(trim($_dude_config['noreplace_flag']) && strpos($m[0], $_dude_config['noreplace_flag']))
    {
        return $m[0];
    }

    $urlinfo = parse_url($m[4]);
    $host = strtolower($urlinfo['host']);
    if(substr($host, 0,4) == "www.")
    {
        $host = substr($host,4);
    }

    if(strpos($m[0], 'onclick="return hs.expand(this)"'))
    {
        return $m[0];
    }

    if($host == $domain || $host == "seodude.ru")
    {
        if($_dude_config['getleeched'])
        {
            $path = basename($urlinfo['path']);
            if($path == "go.php")
            {
                parse_str($urlinfo['query'], $params);
                $url = $params['url'];
                $url = @base64_decode ( $url );
                $url = str_replace ( "&amp;", "&", $url );

                $m[4] = $url;

                $urlinfo = parse_url($url);
                $host = strtolower($urlinfo['host']);
                if(substr($host, 0,4) == "www.")
                {
                    $host = substr($host,4);
                }
            }
            else
            {
                return $m[0];
            }
        }
        else
        {
            return $m[0];
        }
    }

    if($_dude_config['use_list_white'] && @in_array($host, $_dude_config['list_white']))
    {
        return $m[0];
    }

    $_url = $_dude_config['encrypt'] ? base64_encode($m[4]) : $m[4];

    $url = rtrim($config['http_home_url'],"/").DUDE_OUT_PAGE_URL;
    $url .= "?".urlencode($tags[$m[2]].":".$_url);

    if($_dude_config['usenoindex'] || $_dude_config['usenofollow'])
    {
        $rel = array();
        if($_dude_config['usenoindex'])
        {
            $rel[] = 'noindex';
        }
        if($_dude_config['usenofollow'])
        {
            $rel[] = 'nofollow';
        }
        $rel = " rel=\"".join(",", $rel)."\" ";
        $m[5] = $rel.$m[5];
    }
    
    $m = $m[1].$url.$m[3].$m[5];
    return $_dude_config['usenoindex'] ? '<noindex>'.$m.'</noindex>' : $m;
}

function dude_smart_leech_rewrite_urls_black($m)
{
    global $_dude_config;

    $urlinfo = parse_url($m[3]);
    $host = strtolower($urlinfo['host']);
    if(substr($host, 0,4) == "www.")
    {
        $host = substr($host,4);
    }

    if(@in_array($host, $_dude_config['list_black']))
    {
        return $m[5];
    }

    return $m[0];
}

if (!function_exists('htmlspecialchars_decode') )
{
    function htmlspecialchars_decode($text)
    {
        return strtr($text, array_flip(get_html_translation_table(HTML_SPECIALCHARS)));
    }
}