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<?php
// tinyurl.php?c=
$num = $_GET['c'];
if($fp = fsockopen ("tinyurl.com", 80, $errno, $errstr, 30))
{
if ($fp) {
fputs ($fp, "HEAD /$num HTTP/1.0\r\nHost: tinyurl.com\r\n\r\n");
while (!feof($fp)) {$headers .= fgets ($fp,128);}
fclose ($fp);
}
$arr1=explode("Location:",$headers);
$arr=explode("\n",trim($arr1[1]));
echo trim($arr[0]);
}
?>
Refactorings
No refactoring yet !
Meir
October 28, 2007, October 28, 2007 10:21, permalink
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<?php $url = 'http://tinyurl.com/'.$_GET['n']; $headers = get_headers($url, true); echo $headers['Location'][0]; ?>
Hubert Roksor
November 6, 2007, November 06, 2007 18:25, permalink
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Meir's solution looks good, and if you really want to use HEAD you can change the default context. Note: you should also make sure that $_GET['c'] contains a valid TinyURL token, otherwise your service may be used as a relay for DDOS.
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<?php if (preg_match('#^[a-z0-9]$#Di', $_GET['n'])) { stream_context_get_default(array( 'http' => array( 'method' => 'HEAD' ) )); $url = 'http://tinyurl.com/'.$_GET['n']; $headers = get_headers($url, 1); echo $headers['Location'][0]; }
Using HTTP HEAD request for better performance