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// display product details

echo ‘You have selected product #‘ . $_GET[‘product_id’] .

‘ from category #‘ . $_GET[‘category_id’];

// display affiliate details

echo ‘<br /><br /> You got here through affiliate: ‘;

if (!isset($_SESSION[‘aff_id’]))

{

echo ‘(no affiliate)‘;

}

else

{

echo $_SESSION[‘aff_id’];

}

?>

3.

Test your new script now. The first test consists of loading a product page without an affiliate

ID, such as

http://seophp.example.com/Products/SEO-Toolbox-C6/Link-Juice-

P31.html.

Figure 5-1 shows the result.

Figure 5-1

4.

Now add an affiliate ID. Load

http://seophp.example.com/Products/SEO-Toolbox-C6/

Link-Juice-P31.html?aff_id=987

. Expect to be correctly redirected to the main product

page, and still get the affiliate ID retained. Figure 5-2 shows the expected output.

Figure 5-2

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Chapter 5: Duplicate Content

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