PHPでyoukuビデオの最終アドレスを取得する方法

/**
* youku ビデオの最終アドレスを取得します
* bbs.it-home.org によって編集
* : 2013-10-2
*/
class YoukuFlv{
 static private $error = "";
 static private $result = array();

 static public function getYoukuFlv($url){
 //从url获取youkuid
 if(! $id = self::getYoukuId($url)){
 return false;
 }
 //获取youkuビデオ详细情報
 $content = self ::get_curl_contents( "http://v.youku.com/player/getPlayList/VideoIDS/".$id );
 $data = json_decode($content);
 if(!isset($data->data[ 0]->streamfileids)){
 self::$error = "このビデオが見つかりません";
 return false;
 }
 foreach($data->data[0]->streamfileids AS $k=> ;$v){
 if($k == 'flv' || $k == 'mp4'){
 //sid
 $sid= self::getSid();
 //fileid
 $fileid = self ::getfileid($v,$data->data[0]->seed);
 $one=($data->data[0]->segs->$k);
 self: :$result[$k] = "http://f.youku.com/player/getFlvPath/sid/{$sid}_00/st/{$k}/fileid/{$fileid}?K={$one [0]->k}";
 }
 }
 if(empty(self::$result)){
 self::$error = "この動画は MP4 または FLV 形式ではありません";
 return false;
 }else{
 return true;
 }
 }
 static public function error(){
 return self::$error;
 }

 static public function result(){
 return self::$result;
 }

 static private function getYoukuId($url){
 //url を空にすることはできません
 if($url == "" || substr($url , 0 , 29) != "http://v.youku.com/v_show/id_"){
 self::$error = "URL がエラーです";
 return false;
 }
 return substr ($url , 29 , -5);
 }

 静的プライベート関数 get_curl_contents($url, $second = 5){
 if(!function_exists('curl_init')) die('php.ini未开启php_curl.dll');
 $c =curl_init() ;
curl_setopt($c,CURLOPT_URL,$url);
$UserAgent=$_SERVER['HTTP_USER_AGENT'];
curl_setopt($c,CURLOPT_USERAGENT,$UserAgent);
curl_setopt($c,CURLOPT_HEADER,0);
curl_setopt ($c,CURLOPT_TIMEOUT,$秒);
curl_setopt($c,CURLOPT_RETURNTRANSFER, true);
$cnt =curl_exec($c);
curl_close($c);
return $cnt;
 }
静的プライベート関数 getSid () {
 $sid = time().(rand(0,9000)+10000);
 return $sid;
 }
 static private function getfileid($fileId,$seed) {
 $mixed = self::getMixString ($seed);
 $ids =explode("*",$fileId);
 unset($ids[count($ids)-1]);
 $realId = "";
 for ($i=0; $i < count($ids);++$i) {
 $idx = $ids[$i];
 $realId .= substr($mixed,$idx,1);
 }
 return $realId;
 }
 static private function getMixString($seed) {
 $mixed = "";
 $source = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/\:._-1234567890";
 $len = strlen($source);
 for($i= 0;$i<; $len;++$i){
 $seed = ($seed * 211 + 30031) % 65536;
 $index = ($seed / 65536 * strlen($source));
 $c = substr($source, $index,1);
 $mixed .= $c;
 $source = str_replace($c, "",$source);
 }
 return $mixed;
 }
}
if(YoukuFlv::getYoukuFlv(" http://v.youku.com/v_show/id_XNjEyOTE4NTEy_ev_1.html")){
 print_r( YoukuFlv::result() );
}else{
 echo YoukuFlv::error();
}
?>

另外一种调用方法： http://player.youku.com/player.php/sid/XMjI0MDIwNDc2/v.swf http://player.youku.com/player.php/sid/{$id}/v.swf