Redirecting to Multiple Sites, Each in Turn

forwardvision · #1 06-Mar-2009, 04:26

Hi Guys,

I wonder if someone can please advise me on how to do this please.

I am a distributor for a company & I want to do some advertising with some fellow colleagues. We all have our own individual websites. The advert will have one web address, which will for each hit redirect to a different website.

So for instance, let's say the web address on the advert is http://www.our-advert.com and there are 4 of us sharing the cost of the ad with our own individual sites:

Fred: http://www.freds-site.com
John: http://www.johns-website.com
Jane: http://www.jane-online.com
Jill: http://www.jill-on-the.net

Now, the first time someone goes onto our-advert.com, it will redirect to Fred's site, the second hit will redirect to John's, the next to Jane's, the next to Jill's and then the next to Fred's and so on and so forth.

How do I do this? I am guessing it will have to be in something like php or javascript? Please can anyone advise me on this?

Thanks,

Jason

Blake · #2 20-Mar-2009, 05:53

You could do something like this:

PHP Code:


<?php

    $sites = Array("http://www.freds-site.com",
                   "http://www.johns-website.com",
                   "http://www.jane-online.com",
                   "http://www.jill-on-the.net");

    $numSites = sizeof($sites);

    $currentSite =  isset($_COOKIE['lastsite']) ?
        ($_COOKIE['lastsite'] + 1) % $numSites :
        rand() % $numSites;
    setCookie('lastsite', $currentSite);
    header("Location: " . $sites[$currentSite]);

?>

It sets a cookie to keep track of the last site visited. If the cookie is not found, it goes to a random site. On each visit, it updates the cookie.

If you want a global counter instead (so that it goes to the next site each time you get a hit from anywhere), you could do this:

PHP Code:


<?php

    $sites = Array("http://www.freds-site.com",
                   "http://www.johns-website.com",
                   "http://www.jane-online.com",
                   "http://www.jill-on-the.net");
    $numSites = sizeof($sites);
    $lastSite = 0;
    if (file_exists("lastsite.txt")) $lastSite = file_get_contents("lastsite.txt");
    $currentSite = ($lastSite + 1) % $numSites;
    $f = fopen("lastsite.txt", "w+");
    fwrite($f, $currentSite);
    fclose($f);
    header("Location: " . $sites[$currentSite]);

?>

This example keeps a text file on the server ("lastsite.txt") which has a number representing the last site visited by anyone. Any time someone goes to your url, the counter in the file is updated, so that the next time someone visits your site, the counter will be updated.

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Redirecting to Multiple Sites, Each in Turn

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