echo unshorten ( $url );
function unshorten($url) {
$url = trim ( $url );
$headers = get_headers ( $url );
$location = $url;
$short = false;
foreach ( $headers as $head ) {
if ($head == "HTTP/1.1 302 Found" || $head == 'HTTP/1.0 301 Moved Permanently')
$short = true;
if ($short && startwith ( $head, "Location: " )) {
$location = substr ( $head, 10 );//Location: 10个字符
}
}
return $location;
}
function startwith($Haystack, $Needle) {
return strpos ( $Haystack, $Needle ) === 0;
}
/* Array
(
[0] => HTTP/1.0 301 Moved Permanently
[1] => Date: Mon, 04 Feb 2013 06:46:04 GMT
[2] => Server: LiteSpeed
[3] => Connection: close
[4] => X-Powered-By: PHP/5.3.20
[5] => Location: http://yxmhero1989.blog.163.com
[6] => Content-Type: text/html
[7] => Content-Length: 0
[8] => Vary: User-Agent
[9] => HTTP/1.1 200 OK
[10] => Server: nginx
[11] => Date: Mon, 04 Feb 2013 06:46:05 GMT
[12] => Content-Type: text/html;charset=GBK
[13] => Connection: close
[14] => Vary: Accept-Encoding
[15] => Vary: Host,Accept-Encoding
[16] => Set-Cookie: USERTRACK=61.170.229.53.1359960365378463; path=/; expires=Fri, 05-Apr-13 06:46:05 GMT; domain=.163.com
[17] => Set-Cookie: NTESBLOGSI=B9DAF1AA5E615128B7B79DCCF95AB455.app-71-8010; Domain=.blog.163.com; Path=/
[18] => Cache-Control: must-revalidate
[19] => Expires: Mon, 25 Apr 2005 21:10:50 GMT
[20] => Last-Modified: Mon, 04 Feb 2013 06:46:05 GMT
) */
?>
