Following redirect to a second URL

Hi all,

I'm developing a site relating to YouTube videos. I currently have a function that retrieves the YouTube FLV URL. For example:

http://www.youtube.com/get_video?video_id=XC71t8GzqPs&t=OEgsToPDskJtI1jb1nE9xx9Ia-RxuCoh

However, this URL redirects to another URL that is the true location of the video file. For example, the above URL redirects to:

http://lax-v158.lax.youtube.com/get_video?video_id=XC71t8GzqPs

My Flash applet does not work if the function returns the non-redirected URL. Is there any way to make a function that follows the first URL and returns the true location of the video file (the second URL)?

Thanks in advance for any help.

 

function getRedirect($url)
{
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $url);
  curl_setopt($ch, CURLOPT_HEADER, 1);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
  $result = curl_exec($ch);
  curl_close($ch);
  preg_match("/Location: (.*?)\n/", $result, $match);
  $realurl = $match[1];
  return $realurl;
}

PHP:

That should work.

 

Worked like a charm, thanks!