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2f263fce99
Fixes bug where an invalid Last-Modified value would be returned in feed requests for sites that had 0 items to return. Comment or post feeds will now return the current timestamp as the Last-Modified header value. Example: a request for the comments feed for a site without any comments. Replaced use of the local static variable `$cache_lastcommentmodified` to store the modified date in `get_lastcommentmodified()` with the Object Cache API. The `get_lastcommentmodified()` function returns early if there is a cached value and returns `false` if there where no comments found. Introduced `_clear_modified_cache_on_transition_comment_status()` to flush the `lastcommentmodified` cache key when a comment enters or leaves approval status. In `get_lastpostmodified()` return early if there is a cached value and return `false` if there are no posts found. Props swissspidy, rachelbaker, dllh, leobaiano. Fixes #38027. Built from https://develop.svn.wordpress.org/trunk@38925 git-svn-id: http://core.svn.wordpress.org/trunk@38868 1a063a9b-81f0-0310-95a4-ce76da25c4cd
89 lines
2.6 KiB
PHP
89 lines
2.6 KiB
PHP
<?php
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/**
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* RSS 1 RDF Feed Template for displaying RSS 1 Posts feed.
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*
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* @package WordPress
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*/
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header('Content-Type: ' . feed_content_type('rdf') . '; charset=' . get_option('blog_charset'), true);
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$more = 1;
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echo '<?xml version="1.0" encoding="'.get_option('blog_charset').'"?'.'>';
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/** This action is documented in wp-includes/feed-rss2.php */
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do_action( 'rss_tag_pre', 'rdf' );
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?>
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<rdf:RDF
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xmlns="http://purl.org/rss/1.0/"
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xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
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xmlns:admin="http://webns.net/mvcb/"
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xmlns:content="http://purl.org/rss/1.0/modules/content/"
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<?php
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/**
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* Fires at the end of the feed root to add namespaces.
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*
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* @since 2.0.0
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*/
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do_action( 'rdf_ns' );
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?>
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>
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<channel rdf:about="<?php bloginfo_rss("url") ?>">
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<title><?php wp_title_rss(); ?></title>
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<link><?php bloginfo_rss('url') ?></link>
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<description><?php bloginfo_rss('description') ?></description>
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<dc:date><?php
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$date = get_lastpostmodified( 'GMT' );
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echo $date ? mysql2date( 'Y-m-d\TH:i:s\Z', $date ) : date( 'Y-m-d\TH:i:s\Z' );
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?></dc:date>
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<sy:updatePeriod><?php
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/** This filter is documented in wp-includes/feed-rss2.php */
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echo apply_filters( 'rss_update_period', 'hourly' );
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?></sy:updatePeriod>
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<sy:updateFrequency><?php
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/** This filter is documented in wp-includes/feed-rss2.php */
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echo apply_filters( 'rss_update_frequency', '1' );
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?></sy:updateFrequency>
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<sy:updateBase>2000-01-01T12:00+00:00</sy:updateBase>
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<?php
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/**
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* Fires at the end of the RDF feed header.
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*
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* @since 2.0.0
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*/
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do_action( 'rdf_header' );
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?>
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<items>
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<rdf:Seq>
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<?php while (have_posts()): the_post(); ?>
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<rdf:li rdf:resource="<?php the_permalink_rss() ?>"/>
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<?php endwhile; ?>
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</rdf:Seq>
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</items>
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</channel>
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<?php rewind_posts(); while (have_posts()): the_post(); ?>
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<item rdf:about="<?php the_permalink_rss() ?>">
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<title><?php the_title_rss() ?></title>
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<link><?php the_permalink_rss() ?></link>
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<dc:date><?php echo mysql2date('Y-m-d\TH:i:s\Z', $post->post_date_gmt, false); ?></dc:date>
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<dc:creator><![CDATA[<?php the_author() ?>]]></dc:creator>
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<?php the_category_rss('rdf') ?>
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<?php if (get_option('rss_use_excerpt')) : ?>
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<description><![CDATA[<?php the_excerpt_rss() ?>]]></description>
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<?php else : ?>
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<description><![CDATA[<?php the_excerpt_rss() ?>]]></description>
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<content:encoded><![CDATA[<?php the_content_feed('rdf') ?>]]></content:encoded>
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<?php endif; ?>
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<?php
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/**
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* Fires at the end of each RDF feed item.
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*
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* @since 2.0.0
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*/
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do_action( 'rdf_item' );
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?>
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</item>
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<?php endwhile; ?>
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</rdf:RDF>
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