Turn a normal link into an affiliate link using PHP

Hi all,

I am interested to learn how you can redirect all links through a php script to add an affiliate id onto the end (if you have one for that site).

So for instance, a user submits a post linking to www.bestbuy.com/productA. The link is fed through a php script which appends my BestBuy affliate id onto the link.

All links on the site would feed through the PHP script, but only links to sites that I have an affiliate account with would change.

Is this possible? I think that fatwallet.com does something to this effect.

Example:
Link submitted by user: http://www.amazon.com/exec/obidos/ASIN/B000BNKXEE/

Link visible on fatwallet.com: http://www.fatwallet.com/redirect/bounce.php?afsrc=1&url=http://www.amazon.com/exec/obidos/ASIN/B000BNKXEE/qid=852619/ref=nosim/fatwalletcom/v=glance&s=apparel/103-9687342-2089457

Destination link: http://www.amazon.com/exec/obidos/ASIN/B000BNKXEE/qid%3D852619/ref%3Dnosim/fatwalletcom/v%3Dglance%26s%3Dapparel/103-7057263-3387836

 

maybe a mod-rewrite with page.html fed to the php?

.htaccess in products folder

RewriteEngine on
RewriteBase /products
RewriteRule ^item-([^.]+).html$ index.php?i=$1[L]

PHP:

index.php in products folder

$out = '';
switch ($_REQUEST['i'])
{
    case "a":
        $out = "http://www.example.com/affiliate-info-a";
        break;
    case "b":
        $out = "http://www.example.com/affiliate-info-b";
        break;
}

if($out != '')
    header("Location: $out");    

PHP:

URL for product a == http://www.example.com/products/item-a.html

Just musing, I didn't try to test this.

 

Good Post.