通过PHP下载Facebook视频（.mp4）

Question

例如，我有这个URL：

http://video.ak.fbcdn.net/hvideo-ak-prn2/v/1032822_578813298845318_1606611618_n.mp4?oh=c3c6a02985213f7c47386f4653792ca6&oe=5200506F&__gda__=1375798216_02752679a44bc4b3c514bee21e000959

如何通过PHP下载视频源文件？

请注意，下载URL不会给我视频源！

// does not work:
file_put_contents('video.mp4', 'http://video.ak.fbcdn.net/hvideo-ak-prn2/v/1032822_578813298845318_1606611618_n.mp4?oh=c3c6a02985213f7c47386f4653792ca6&oe=5200506F&__gda__=1375798216_02752679a44bc4b3c514bee21e000959');      
// this does not download the video source but instead gets me a file that links to the video hosted on Facebook.

Answer 1

file_put_contents('derp.mp4', file_get_contents('http://video.ak.fbcdn.net/hvideo-ak-prn2/v/1032822_578813298845318_1606611618_n.mp4?oh=c3c6a02985213f7c47386f4653792ca6&oe=5200506F&__gda__=1375798216_02752679a44bc4b3c514bee21e000959'));