Parse to get cool video real download address of the PHP source code

The code is as follows:


<?php


//--Call Method/demo.php?url=http://v.youku.com/v_show/id_xmzkyoda2ntey.html


Echo getyoukuflv ($_get[' url '));





function getyoukuflv ($url) {


Preg_match ("#id_ (. *?). html# ", $url, $out);


$id = $out [1];


$content =get_curl_contents (' http://v.youku.com/player/getPlayList/VideoIDS/'. $id);


$data =json_decode ($content);


foreach ($data->data[0]->streamfileids as $k => $v) {


$sid =getsid ();


$fileid =getfileid ($v, $data->data[0]->seed);


$one = ($data->data[0]->segs-> $k);


if ($k = = ' flv ' | | | $k = = ' mp4 ') return "http://f.youku.com/player/getflvpath/sid/{$sid}_00/st/{$k}/fileid/{$fileid} ? k={$one [0]->k}];


continue;


}


}


function get_curl_contents ($url, $second = 5) {


if (!function_exists (' Curl_init ')) die (' PHP.ini not open 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, $second);


curl_setopt ($c, Curlopt_returntransfer, true);


$cnt = curl_exec ($c);


$cnt =mb_check_encoding ($cnt, ' Utf-8 ')? Iconv (' GBK ', ' Utf-8//ignore ', $cnt): $cnt; Character encoding Conversion


curl_close ($c);


return $cnt;


}


function GetSID () {


$sid = time (). (Rand (0,9000) +10000);


return $sid;


}


function Getkey ($key 1, $key 2) {


$a = Hexdec ($key 1);


$b = $a ^ 0xa55aa5a5;


$b = Dechex ($b);


return $key 2. $b;


}


function Getfileid ($fileId, $seed) {


$mixed = getmixstring ($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;


}


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;


}


?>