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我有一个 PHP 脚本，可以将 youtube 的url_encoded_fmt_stream_map返回到数组中

这是其中一个数组的示例

Array
(
[quality] => hd720
[itag] => 45
[url] => http://r7---sn-25ge7n7l.c.youtube.com/videoplayback?source=youtube&expire=1377205488&cp=U0hWTFJLU19NUkNONl9KRVdFOlFROHcyQXZRVzMw&sver=3&mt=1377182899&itag=45&id=f3a24c732e4ea990&upn=aBSr1FoD9WM&sparams=cp%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&fexp=919112%2C919363%2C914074%2C916624%2C909546%2C906397%2C929117%2C929121%2C929906%2C929907%2C929922%2C929127%2C929129%2C929131%2C929930%2C925720%2C925722%2C925718%2C929917%2C929919%2C929933%2C912521%2C919206%2C932306%2C913428%2C920605%2C904830%2C919373%2C930803%2C908536%2C904122%2C938701%2C911423%2C936308%2C909549%2C900816%2C912711%2C904494%2C904497%2C900375%2C906001&ipbits=8&ratebypass=yes&ip=31.170.160.74&key=yt1&ms=au&mv=u
[fallback_host] => tc.v23.cache8.c.youtube.com
[type] => video/webm; codecs=\"vp8.0, vorbis\"
[sig] => 1A6118D09B20DCD2CD068CAD2415C6BFF80FF5F0.5FB3424173B8FABE7379689138DFA7038B5F11B4
)

我怎样才能把这些信息放在一起做一个有效的下载链接？

任何帮助将不胜感激，并提前感谢

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1 回答 1

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结果中已经存在下载 url，例如：

http://r7---sn-25ge7n7l.c.youtube.com/videoplayback?source=youtube&expire=1377205488&cp=U0hWTFJLU19NUkNONl9KRVdFOlFROHcyQXZRVzMw&sver=3&mt=1377182899&itag=45&id=f3a24c732e4ea990&upn=aBSr1FoD9WM&sparams=cp%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&fexp=919112%2C919363%2C914074%2C916624%2C909546%2C906397%2C929117%2C929121%2C929906%2C929907%2C929922%2C929127%2C929129%2C929131%2C929930%2C925720%2C925722%2C925718%2C929917%2C929919%2C929933%2C912521%2C919206%2C932306%2C913428%2C920605%2C904830%2C919373%2C930803%2C908536%2C904122%2C938701%2C911423%2C936308%2C909549%2C900816%2C912711%2C904494%2C904497%2C900375%2C906001&ipbits=8&ratebypass=yes&ip=31.170.160.74&key=yt1&ms=au&mv=u

将是您在上面寻找的网址。这个 url 会随着每个请求而改变，并且只能从请求它的 IP 获得。

于 2013-09-05T11:04:38.573 回答