root/trunk/wp-includes/feed-rdf.php

<?php
/**
 * RSS 1 RDF Feed Template for displaying RSS 1 Posts feed.
 *
 * @package WordPress
 */

header('Content-Type: application/rdf+xml; charset=' . get_option('blog_charset'), true);
$more = 1;

?>
<?php echo '<?xml version="1.0" encoding="'.get_option('blog_charset').'"?'.'>'; ?>
<rdf:RDF
    xmlns="http://purl.org/rss/1.0/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
    xmlns:admin="http://webns.net/mvcb/"
    xmlns:content="http://purl.org/rss/1.0/modules/content/"
    <?php do_action('rdf_ns'); ?>
>
<channel rdf:about="<?php bloginfo_rss("url") ?>">
    <title><?php bloginfo_rss('name'); wp_title_rss(); ?></title>
    <link><?php bloginfo_rss('url') ?></link>
    <description><?php bloginfo_rss('description') ?></description>
    <dc:date><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></dc:date>
    <?php the_generator( 'rdf' ); ?>
    <sy:updatePeriod>hourly</sy:updatePeriod>
    <sy:updateFrequency>1</sy:updateFrequency>
    <sy:updateBase>2000-01-01T12:00+00:00</sy:updateBase>
    <?php do_action('rdf_header'); ?>
    <items>
        <rdf:Seq>
        <?php while (have_posts()): the_post(); ?>
            <rdf:li rdf:resource="<?php the_permalink_rss() ?>"/>
        <?php endwhile; ?>
        </rdf:Seq>
    </items>
</channel>
<?php rewind_posts(); while (have_posts()): the_post(); ?>
<item rdf:about="<?php the_permalink_rss() ?>">
    <title><?php the_title_rss() ?></title>
    <link><?php the_permalink_rss() ?></link>
     <dc:date><?php echo mysql2date('Y-m-d\TH:i:s\Z', $post->post_date_gmt, false); ?></dc:date>
    <dc:creator><?php the_author() ?></dc:creator>
    <?php the_category_rss('rdf') ?>
<?php if (get_option('rss_use_excerpt')) : ?>
    <description><?php the_excerpt_rss() ?></description>
<?php else : ?>
    <description><?php the_content_rss('', 0, '', get_option('rss_excerpt_length'), 2) ?></description>
    <content:encoded><![CDATA[<?php the_content('', 0, '') ?>]]></content:encoded>
<?php endif; ?>
    <?php do_action('rdf_item'); ?>
</item>
<?php endwhile;  ?>
</rdf:RDF>