PHP把下载地址转换为迅雷、快车、QQ旋风下载链接

function zhuanhuan($url){
    if(empty($url)) return $result;
    $urlodd=explode(\'//\',$url,2);
    $head=strtolower($urlodd[0]);
    $behind=$urlodd[1];
    if($head=="thunder:"){
        $url=substr(base64_decode($behind),2,-2);
    }else if($head=="flashget:"){
        $url1=explode(\'&\',$behind,2);
        $url=substr(base64_decode($url1[0]),10,-10);
    }else if($head=="qqdl:"){
        $url=base64_decode($behind);
    }else if($head=="http:"||$head=="ftp:"||$head=="mms:"||$head=="rtsp:"||$head=="https:"){
        $url=array(
            \'thunder\'=>"thunder://".base64_encode("AA".$url."ZZ"),
            \'flashget\'=>"Flashget://".base64_encode("[FLASHGET]".$url."[FLASHGET]")."&aiyh",
            \'qqdl\'=>"qqdl://".base64_encode($url)
        );
    }else{
        return \'\';
    }
    return $url;
}

出处：http://www.oschina.net/code/snippet_1780998_52180 //php qq下载地址互相转换