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header(‘Content-type: text/plain’);

foreach ($this->_items as $i)

{

echo $i[‘loc’] . “\n”;

}

return ob_get_clean();

}

// escape string characters for inclusion in XML structure

function _escapeXML($str)

{

$translation = get_html_translation_table(HTML_ENTITIES, ENT_QUOTES);

foreach ($translation as $key => $value)

{

$translation[$key] = ‘&#‘ . ord($key) . ‘;’;

}

$translation[chr(38)] = ‘&‘;

return preg_replace(“/&(?![A-Za-z]{0,4}\w{2,3};|#[0-9]{2,3};)/“,”&” ,

strtr($str, $translation));

}

}

?>

2.

You need to add the following two rewrite rules to the

.htaccess

file in

/seophp

. If you have

other entries in the file from previous exercises, just add the new rules; otherwise, create the file

from scratch. (If you haven’t already, see Chapter 3 for details on mod_rewrite.)

RewriteEngine On

# Rewrite requests for sitemap.xml

RewriteRule ^sitemap.xml$ /sitemap.php?target=google [L]

# Rewrite requests for urllist.txt

RewriteRule ^urllist.txt$ /sitemap.php?target=yahoo [L]

3.

You need to have

url_factory.inc.php

and

config.inc.php

, which you created in Chapter 3,

in your

seophp/include

folder. Feel free to take them from the code download, if needed.

4.

In the

seophp

folder, create a file named

sitemap.php

and type this code in it:

<?php

// redirect requests to dynamic to their keyword rich versions

require_once ‘include/sitemap.inc.php’;

// load configuration

require_once ‘include/config.inc.php’;

// load URL factory

require_once ‘include/url_factory.inc.php’;

// create the Sitemap object

$s = new Sitemap();

// add sitemap items

$s->addItem(SITE_DOMAIN . ‘/catalog.html’, ‘2006/10/27’, ‘weekly’);

$s->addItem(make_category_product_url(

“Carpenter’s Tools”, 12, “Belt Sander”, 45), ‘2006/10/27’, ‘weekly’);

205

Chapter 9: Sitemaps

c09.qxd:c09 10:43 205

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