php 下载

解析获取优酷视频真实下载地址的PHP源代码

复制代码代码如下:

<?php

//--调⽤⽅法/?url=/v_show/id_

echogetYoukuFlv($_GET['url']);

functiongetYoukuFlv($url){

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

$id=$out[1];

$content=get_curl_contents('/player/getPlayList/VideoIDS/'.$id);

$data=json_decode($content);

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

$sid=getSid();

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

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

if($k=='flv'||$k=='mp4')return"/player/getFlvPath/sid/{$sid}_00/st/{$k}/fileid/{$fileid}?K={$one[0]->k}";

continue;

}

}

functionget_curl_contents($url,$second=5){

if(!function_exists('curl_init'))die('未开启php_');

$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;//字符编码转换

curl_close($c);

return$cnt;

}

functiongetSid(){

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

return$sid;

}

functiongetkey($key1,$key2){

$a=hexdec($key1);

$b=$a^0xA55AA5A5;

$b=dechex($b);

return$key2.$b;

}

functiongetfileid($fileId,$seed){

$mixed=getMixString($seed);

$ids=explode("*",$fileId);

unset($ids[count($ids)-1]);

$realId="";

for($i=0;$i

$idx=$ids[$i];

$realId.=substr($mixed,$idx,1);

}

return$realId;

}

functiongetMixString($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;

}

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