Get redirected url name using curl?

Question

I have the following link:

http://www.compredia.eu/finder_listing.php?cpath=10728,100021,1063355&mode=finder

which automatically redirects to:

http://www.compredia.eu/hp-printcartridges-for-hp-business-inkjet-2800.html

How can I get the url's redirected page, using curl?

Turn off the curl option to auto-follow redirects, then extract the Location header from the initial response headers. — Marc B
– Marc B, Commented Apr 25, 2012 at 17:10

Dr.Kameleon · Accepted Answer · 2012-04-26 09:24:12Z

1

Here's what I'm using - it should work for you, too :

<?php
function getRedirectUrl($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;
        }

}

function getAllRedirects($url){
        $redirects = array();
        while ($newurl = getRedirectUrl($url)){
                if (in_array($newurl, $redirects)){
                        break;
                }
                $redirects[] = $newurl;
                $url = $newurl;
        }
        return $redirects;
}

function getFinalRedirect($url){
        $redirects = getAllRedirects($url);
        if (count($redirects)>0){
                return array_pop($redirects);
        } else {
                return $url;
        }
}
?>

answered Apr 26, 2012 at 9:24

Dr.Kameleon

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4 Comments

user1356820 Over a year ago

probably the getAllRedirects function should be started ..if so unfortunately it return compredia.eu/… .. the $url and not the final url compredia.eu/… ... sad..

Dr.Kameleon Over a year ago

@user1356820 Have you tried using getFinalRedirect? That's the one you should try. ;-)

Dr.Kameleon Over a year ago

@user1356820 Could you please confirm something (I think found the solution for you) : you have this (compredia.eu/…) and you want to get that (compredia.eu/…), right?

Dr.Kameleon Over a year ago

@user1356820 Check my other answer - I think I did it :-)

Explosion Pills · Accepted Answer · 2012-04-25 17:18:40Z

0

$ch = curl_init($url);
//set options
curl_exec($ch);
$lasturl = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);

answered Apr 25, 2012 at 17:18

Explosion Pills

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2 Comments

user1356820 Over a year ago

Have tried it already return value : Ink & Toner Finder: echo $lasturl

user1356820 Over a year ago

have tried and turned off the curl option to auto-follow redirects. Happens the same I can not get the final urls name.Just an Ink & Toner Finder messages cames out and the page automatically redirects to compredia.eu/… .. Looking at the code there maybe an ajax search / result ? the option &mode=finder triggers the page to redirect because without it does nothing . So if there is a solutions I do want to have in a variable the name = compredia.eu/…

Dr.Kameleon · Accepted Answer · 2012-04-26 15:18:35Z

0

UPDATE

(this is what will work in your case)

Code :

<?php

function curlRedir($url)
{
    $go = curl_init($url);
    curl_setopt ($go, CURLOPT_URL, $url);

    static $curl_loops = 0;
    static $curl_max_loops = 20;

    if ($curl_loops++>= $curl_max_loops)
    {
        $curl_loops = 0;
        return FALSE;
    }

    curl_setopt($go, CURLOPT_HEADER, true);
    curl_setopt($go, CURLOPT_RETURNTRANSFER, true);

    $data = curl_exec($go);
    $pattern = '/self\.location\.href=\'(.+)\';/';
    preg_match($pattern, $data, $matches);

    curl_close($go);
    return $matches[1];
}

$c = curlRedir("http://www.compredia.eu/finder_listing.php?cpath=10728,100021,1063355&mode=finder");

echo $c;

?>

Output :

http://www.compredia.eu/hp-printcartridges-for-hp-business-inkjet-2800.html

answered Apr 26, 2012 at 15:18

Dr.Kameleon

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1 Comment

Tolga Arican Over a year ago

what if not redirected by javascript?

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