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// retrieve product and category IDs from the query string

$product_id = $_GET[‘product_id’];

$category_id = $_GET[‘category_id’];

// retrieve product and category names from fictional database

$product_name = $GLOBALS[‘products’][$product_id];

$category_name = $GLOBALS[‘categories’][$category_id];

// create keyword-rich URL

$proper_url = make_category_product_url($category_name, $category_id,

$product_name, $product_id);

// redirect to keyword-rich URL if not already there

return $proper_url;

}

?>

3.

Add these lines to

product.php

:

<?php

// load library that handles redirects

require_once ‘include/url_redirect.inc.php’;

// redirect requests proper keyword-rich URLs when not already there

fix_category_product_url();

// display product details

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

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

?>

4.

Load

http://seophp.example.com/product.php?category_id=2&product_id=42

in

your web browser, and see some magic happen to the URL! Figure 4-4 shows how this request

was redirected to its keyword-rich (“proper”) version of the URL.

Figure 4-4

87

Chapter 4: Content Relocation and HTTP Status Codes

c04.qxd:c04 10:40 87

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