PHP实现使用优酷土豆视频地址获取swf播放器分享地址

/*
     * 根据用户提交的(swf/html)地址，获取优酷，土豆的swf播放地址
     * */
    private function _getSwf ($url = ) {
        if(isset($url) && !empty($url)){
            preg_match_all(/http:\/\/(.*?)?\.(.*?)?\.com\/(.*)/,$url,$types);
        }else{
            return false;
        }
        $type = $types[2][0];
        $domain = $types[1][0];
        $isswf = strpos($types[3][0], v.swf) === false ? false : true;
        $method = substr($types[3][0],0,1);

        switch ($type){
            case youku :
                if( $domain == player ) {
                    $swf = $url;
                }else if( $domain == v ) {
                    preg_match_all(/http:\/\/v\.youku\.com\/v_show\/id_(.*)?\.html/,$url,$url_array);
                    $swf = http://player.youku.com/player.php/sid/.str_replace(/,,$url_array[1][0])./v.swf;
                }else{
                    $swf = $url;
                }
                break;
            case tudou :
                if($isswf){
                    $swf = $url;
                }else{
                    $method = $method == p ? v : $method ;
                    preg_match_all(/http:\/\/www.tudou\.com\/(.*)?\/(.*)?/,$url,$url_array);
                    $str_arr = explode(/,$url_array[1][0]);
                    $count = count($str_arr);
                    if($count == 1) {
                        $id = explode(.,$url_array[2][0])[0];
                    }else if($count == 2){
                        $id = $str_arr[1];
                    }else if($count == 3){
                        $id = $str_arr[2];
                    }
                    $swf = http://www.tudou.com/.$method./.$id./v.swf;
                }
                break;
            default :
                $swf = $url;
                break;
        }
        return $swf;
    }