PHP: How to expand/contract Tinyurls -

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in php, how can replicate expand/contract feature tinyurls on search.twitter.com?

if want find out tinyurl going, use fsockopen connection tinyurl.com on port 80, , send http request this

get /dmsfm http/1.0 host: tinyurl.com

the response like

http/1.0 301 moved permanently connection: close x-powered-by: php/5.2.6 location: http://en.wikipedia.org/wiki/tinyurl content-type: text/html content-length: 0 date: mon, 15 sep 2008 12:29:04 gmt server: tinyurl/1.6

example code...

<?php $tinyurl="dmsfm";  $fp = fsockopen("tinyurl.com", 80, $errno, $errstr, 30); if (!$fp) {     echo "$errstr ($errno)<br />\n"; } else {     $out = "get /$tinyurl http/1.0\r\n";     $out .= "host: tinyurl.com\r\n";     $out .= "connection: close\r\n\r\n";      $response="";      fwrite($fp, $out);     while (!feof($fp)) {         $response.=fgets($fp, 128);     }     fclose($fp);      //now parse location: header out of response  } ?>

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