Created
January 10, 2018 19:34
-
-
Save mdjwel/ac9a1986fc6c0e8b09a244fb78c50926 to your computer and use it in GitHub Desktop.
Get Redirect URL In PHP
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<?php | |
/** | |
* get_redirect_url() | |
* Gets the address that the provided URL redirects to, | |
* or FALSE if there's no redirect. | |
* | |
* @param string $url | |
* @return string | |
*/ | |
function get_redirect_url($url){ | |
$redirect_url = null; | |
$url_parts = @parse_url($url); | |
if (!$url_parts) return false; | |
if (!isset($url_parts['host'])) return false; //can't process relative URLs | |
if (!isset($url_parts['path'])) $url_parts['path'] = '/'; | |
$sock = fsockopen($url_parts['host'], (isset($url_parts['port']) ? (int)$url_parts['port'] : 80), $errno, $errstr, 30); | |
if (!$sock) return false; | |
$request = "HEAD " . $url_parts['path'] . (isset($url_parts['query']) ? '?'.$url_parts['query'] : '') . " HTTP/1.1\r\n"; | |
$request .= 'Host: ' . $url_parts['host'] . "\r\n"; | |
$request .= "Connection: Close\r\n\r\n"; | |
fwrite($sock, $request); | |
$response = ''; | |
while(!feof($sock)) $response .= fread($sock, 8192); | |
fclose($sock); | |
if (preg_match('/^Location: (.+?)$/m', $response, $matches)){ | |
if ( substr($matches[1], 0, 1) == "/" ) | |
return $url_parts['scheme'] . "://" . $url_parts['host'] . trim($matches[1]); | |
else | |
return trim($matches[1]); | |
} else { | |
return false; | |
} | |
} | |
/** | |
* get_all_redirects() | |
* Follows and collects all redirects, in order, for the given URL. | |
* | |
* @param string $url | |
* @return array | |
*/ | |
function get_all_redirects($url){ | |
$redirects = array(); | |
while ($newurl = get_redirect_url($url)){ | |
if (in_array($newurl, $redirects)){ | |
break; | |
} | |
$redirects[] = $newurl; | |
$url = $newurl; | |
} | |
return $redirects; | |
} | |
/** | |
* get_final_url() | |
* Gets the address that the URL ultimately leads to. | |
* Returns $url itself if it isn't a redirect. | |
* | |
* @param string $url | |
* @return string | |
*/ | |
function get_final_url($url){ | |
$redirects = get_all_redirects($url); | |
if (count($redirects)>0){ | |
return array_pop($redirects); | |
} else { | |
return $url; | |
} | |
} | |
$rez = get_all_redirects('http://daerils.gtrends.hop.clickbank.net/'); | |
print_r($rez); |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment