<?php

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/**

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* WordPress Feed API

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*

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* Many of the functions used in here belong in The Loop, or The Loop for the

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* Feeds.

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*

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* @package WordPress

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* @subpackage Feed

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* @since 2.1.0

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*/

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/**

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* RSS container for the bloginfo function.

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*

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* You can retrieve anything that you can using the get_bloginfo() function.

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* Everything will be stripped of tags and characters converted, when the values

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* are retrieved for use in the feeds.

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*

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* @since 1.5.1

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*

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* @see get_bloginfo() For the list of possible values to display.

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*

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* @param string $show See get_bloginfo() for possible values.

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* @return string

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*/

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function get_bloginfo_rss( $show = '' ) {

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$info = strip_tags( get_bloginfo( $show ) );

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/**

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* Filters the bloginfo for use in RSS feeds.

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*

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* @since 2.2.0

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*

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* @see convert_chars()

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* @see get_bloginfo()

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*

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* @param string $info Converted string value of the blog information.

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* @param string $show The type of blog information to retrieve.

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*/

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return apply_filters( 'get_bloginfo_rss', convert_chars( $info ), $show );

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}

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/**

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* Display RSS container for the bloginfo function.

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*

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* You can retrieve anything that you can using the get_bloginfo() function.

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* Everything will be stripped of tags and characters converted, when the values

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* are retrieved for use in the feeds.

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*

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* @since 0.71

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*

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* @see get_bloginfo() For the list of possible values to display.

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*

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* @param string $show See get_bloginfo() for possible values.

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*/

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function bloginfo_rss( $show = '' ) {

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/**

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* Filters the bloginfo for display in RSS feeds.

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*

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* @since 2.1.0

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*

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* @see get_bloginfo()

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*

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* @param string $rss_container RSS container for the blog information.

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* @param string $show The type of blog information to retrieve.

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*/

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echo apply_filters( 'bloginfo_rss', get_bloginfo_rss( $show ), $show );

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}

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/**

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* Retrieve the default feed.

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*

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* The default feed is 'rss2', unless a plugin changes it through the

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* {@see 'default_feed'} filter.

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*

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* @since 2.5.0

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*

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* @return string Default feed, or for example 'rss2', 'atom', etc.

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*/

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function get_default_feed() {

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/**

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* Filters the default feed type.

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*

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* @since 2.5.0

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*

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* @param string $feed_type Type of default feed. Possible values include 'rss2', 'atom'.

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* Default 'rss2'.

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*/

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$default_feed = apply_filters( 'default_feed', 'rss2' );

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return ( 'rss' === $default_feed ) ? 'rss2' : $default_feed;

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}

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/**

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* Retrieve the blog title for the feed title.

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*

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* @since 2.2.0

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* @since 4.4.0 The optional `$sep` parameter was deprecated and renamed to `$deprecated`.

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*

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* @param string $deprecated Unused..

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* @return string The document title.

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*/

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function get_wp_title_rss( $deprecated = '&#8211;' ) {

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if ( '&#8211;' !== $deprecated ) {

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/* translators: %s: 'document_title_separator' filter name. */

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_deprecated_argument( __FUNCTION__, '4.4.0', sprintf( __( 'Use the %s filter instead.' ), '<code>document_title_separator</code>' ) );

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}

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/**

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* Filters the blog title for use as the feed title.

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*

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* @since 2.2.0

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* @since 4.4.0 The `$sep` parameter was deprecated and renamed to `$deprecated`.

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*

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* @param string $title The current blog title.

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* @param string $deprecated Unused.

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*/

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return apply_filters( 'get_wp_title_rss', wp_get_document_title(), $deprecated );

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}

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/**

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* Display the blog title for display of the feed title.

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*

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* @since 2.2.0

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* @since 4.4.0 The optional `$sep` parameter was deprecated and renamed to `$deprecated`.

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*

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* @param string $deprecated Unused.

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*/

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function wp_title_rss( $deprecated = '&#8211;' ) {

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if ( '&#8211;' !== $deprecated ) {

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/* translators: %s: 'document_title_separator' filter name. */

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_deprecated_argument( __FUNCTION__, '4.4.0', sprintf( __( 'Use the %s filter instead.' ), '<code>document_title_separator</code>' ) );

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}

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/**

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* Filters the blog title for display of the feed title.

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*

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* @since 2.2.0

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* @since 4.4.0 The `$sep` parameter was deprecated and renamed to `$deprecated`.

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*

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* @see get_wp_title_rss()

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*

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* @param string $wp_title_rss The current blog title.

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* @param string $deprecated Unused.

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*/

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echo apply_filters( 'wp_title_rss', get_wp_title_rss(), $deprecated );

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}

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/**

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* Retrieve the current post title for the feed.

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*

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* @since 2.0.0

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*

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* @return string Current post title.

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*/

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function get_the_title_rss() {

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$title = get_the_title();

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/**

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* Filters the post title for use in a feed.

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*

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* @since 1.2.0

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*

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* @param string $title The current post title.

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*/

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return apply_filters( 'the_title_rss', $title );

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}

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/**

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* Display the post title in the feed.

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*

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* @since 0.71

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*/

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function the_title_rss() {

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echo get_the_title_rss();

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}

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/**

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* Retrieve the post content for feeds.

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*

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* @since 2.9.0

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*

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* @see get_the_content()

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*

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* @param string $feed_type The type of feed. rss2 | atom | rss | rdf

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* @return string The filtered content.

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*/

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function get_the_content_feed( $feed_type = null ) {

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if ( ! $feed_type ) {

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$feed_type = get_default_feed();

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}

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/** This filter is documented in wp-includes/post-template.php */

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$content = apply_filters( 'the_content', get_the_content() );

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$content = str_replace( ']]>', ']]&gt;', $content );

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/**

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* Filters the post content for use in feeds.

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*

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* @since 2.9.0

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*

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* @param string $content The current post content.

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* @param string $feed_type Type of feed. Possible values include 'rss2', 'atom'.

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* Default 'rss2'.

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*/

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return apply_filters( 'the_content_feed', $content, $feed_type );

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}

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/**

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* Display the post content for feeds.

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*

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* @since 2.9.0

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*

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* @param string $feed_type The type of feed. rss2 | atom | rss | rdf

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*/

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function the_content_feed( $feed_type = null ) {

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echo get_the_content_feed( $feed_type );

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}

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/**

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* Display the post excerpt for the feed.

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*

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* @since 0.71

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*/

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function the_excerpt_rss() {

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$output = get_the_excerpt();

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/**

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* Filters the post excerpt for a feed.

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*

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* @since 1.2.0

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*

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* @param string $output The current post excerpt.

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*/

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echo apply_filters( 'the_excerpt_rss', $output );

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}

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/**

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* Display the permalink to the post for use in feeds.

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*

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* @since 2.3.0

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*/

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function the_permalink_rss() {

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/**

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* Filters the permalink to the post for use in feeds.

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*

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* @since 2.3.0

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*

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* @param string $post_permalink The current post permalink.

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*/

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echo esc_url( apply_filters( 'the_permalink_rss', get_permalink() ) );

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}

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/**

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* Outputs the link to the comments for the current post in an xml safe way

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*

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* @since 3.0.0

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*/

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function comments_link_feed() {

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/**

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* Filters the comments permalink for the current post.

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*

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* @since 3.6.0

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*

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* @param string $comment_permalink The current comment permalink with

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* '#comments' appended.

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*/

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echo esc_url( apply_filters( 'comments_link_feed', get_comments_link() ) );

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}

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/**

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* Display the feed GUID for the current comment.

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*

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* @since 2.5.0

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*

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* @param int|WP_Comment $comment_id Optional comment object or ID. Defaults to global comment object.

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*/

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function comment_guid( $comment_id = null ) {

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echo esc_url( get_comment_guid( $comment_id ) );

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}

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/**

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* Retrieve the feed GUID for the current comment.

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*

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* @since 2.5.0

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*

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* @param int|WP_Comment $comment_id Optional comment object or ID. Defaults to global comment object.

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* @return string|false GUID for comment on success, false on failure.

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*/

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function get_comment_guid( $comment_id = null ) {

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$comment = get_comment( $comment_id );

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if ( ! is_object( $comment ) ) {

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return false;

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}

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return get_the_guid( $comment->comment_post_ID ) . '#comment-' . $comment->comment_ID;

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}

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/**

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* Display the link to the comments.

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*

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* @since 1.5.0

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* @since 4.4.0 Introduced the `$comment` argument.

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*

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* @param int|WP_Comment $comment Optional. Comment object or ID. Defaults to global comment object.

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*/

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function comment_link( $comment = null ) {

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/**

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* Filters the current comment's permalink.

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*

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* @since 3.6.0

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*

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* @see get_comment_link()

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*

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* @param string $comment_permalink The current comment permalink.

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*/

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echo esc_url( apply_filters( 'comment_link', get_comment_link( $comment ) ) );

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}

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/**

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* Retrieve the current comment author for use in the feeds.

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*

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* @since 2.0.0

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*

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* @return string Comment Author

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*/

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function get_comment_author_rss() {

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/**

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* Filters the current comment author for use in a feed.

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*

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* @since 1.5.0

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*

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* @see get_comment_author()

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*

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* @param string $comment_author The current comment author.

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*/

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return apply_filters( 'comment_author_rss', get_comment_author() );

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}

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/**

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* Display the current comment author in the feed.

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*

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* @since 1.0.0

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*/

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function comment_author_rss() {

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echo get_comment_author_rss();

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}

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/**

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* Display the current comment content for use in the feeds.

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*

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* @since 1.0.0

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*/

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function comment_text_rss() {

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$comment_text = get_comment_text();

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/**

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* Filters the current comment content for use in a feed.

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*

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* @since 1.5.0

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*

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* @param string $comment_text The content of the current comment.

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*/

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$comment_text = apply_filters( 'comment_text_rss', $comment_text );

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echo $comment_text;

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}

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/**

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* Retrieve all of the post categories, formatted for use in feeds.

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*

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* All of the categories for the current post in the feed loop, will be

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* retrieved and have feed markup added, so that they can easily be added to the

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* RSS2, Atom, or RSS1 and RSS0.91 RDF feeds.

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*

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* @since 2.1.0

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*

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* @param string $type Optional, default is the type returned by get_default_feed().

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* @return string All of the post categories for displaying in the feed.

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*/

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function get_the_category_rss( $type = null ) {

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if ( empty( $type ) ) {

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$type = get_default_feed();

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}

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$categories = get_the_category();

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$tags = get_the_tags();

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$the_list = '';

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$cat_names = array();

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$filter = 'rss';

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if ( 'atom' === $type ) {

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$filter = 'raw';

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}

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if ( ! empty( $categories ) ) {

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foreach ( (array) $categories as $category ) {

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$cat_names[] = sanitize_term_field( 'name', $category->name, $category->term_id, 'category', $filter );

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}

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}

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if ( ! empty( $tags ) ) {

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foreach ( (array) $tags as $tag ) {

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$cat_names[] = sanitize_term_field( 'name', $tag->name, $tag->term_id, 'post_tag', $filter );

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}

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}

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$cat_names = array_unique( $cat_names );

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foreach ( $cat_names as $cat_name ) {

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if ( 'rdf' === $type ) {

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$the_list .= "\t\t<dc:subject><![CDATA[$cat_name]]></dc:subject>\n";

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} elseif ( 'atom' === $type ) {

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$the_list .= sprintf( '<category scheme="%1$s" term="%2$s" />', esc_attr( get_bloginfo_rss( 'url' ) ), esc_attr( $cat_name ) );

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} else {

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$the_list .= "\t\t<category><![CDATA[" . html_entity_decode( $cat_name, ENT_COMPAT, get_option( 'blog_charset' ) ) . "]]></category>\n";

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}

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}

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/**

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* Filters all of the post categories for display in a feed.

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*

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* @since 1.2.0

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*

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* @param string $the_list All of the RSS post categories.

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* @param string $type Type of feed. Possible values include 'rss2', 'atom'.

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* Default 'rss2'.

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*/

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return apply_filters( 'the_category_rss', $the_list, $type );

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}

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/**

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* Display the post categories in the feed.

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*

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* @since 0.71

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*

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* @see get_the_category_rss() For better explanation.

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*

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* @param string $type Optional, default is the type returned by get_default_feed().

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*/

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function the_category_rss( $type = null ) {

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echo get_the_category_rss( $type );

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}

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/**

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* Display the HTML type based on the blog setting.

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*

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* The two possible values are either 'xhtml' or 'html'.

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*

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* @since 2.2.0

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*/

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function html_type_rss() {

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$type = get_bloginfo( 'html_type' );

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if ( strpos( $type, 'xhtml' ) !== false ) {

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$type = 'xhtml';

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} else {

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$type = 'html';

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}

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echo $type;

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}

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/**

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* Display the rss enclosure for the current post.

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*

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* Uses the global $post to check whether the post requires a password and if

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* the user has the password for the post. If not then it will return before

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* displaying.

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*

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* Also uses the function get_post_custom() to get the post's 'enclosure'

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* metadata field and parses the value to display the enclosure(s). The

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* enclosure(s) consist of enclosure HTML tag(s) with a URI and other

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* attributes.

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*

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* @since 1.5.0

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*/

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function rss_enclosure() {

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if ( post_password_required() ) {

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return;

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}

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foreach ( (array) get_post_custom() as $key => $val ) {

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if ( 'enclosure' === $key ) {

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foreach ( (array) $val as $enc ) {

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$enclosure = explode( "\n", $enc );

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// Only get the first element, e.g. 'audio/mpeg' from 'audio/mpeg mpga mp2 mp3'.

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$t = preg_split( '/[ \t]/', trim( $enclosure[2] ) );

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$type = $t[0];

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/**

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* Filters the RSS enclosure HTML link tag for the current post.

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*

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* @since 2.2.0

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*

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* @param string $html_link_tag The HTML link tag with a URI and other attributes.

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*/

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echo apply_filters( 'rss_enclosure', '<enclosure url="' . esc_url( trim( $enclosure[0] ) ) . '" length="' . absint( trim( $enclosure[1] ) ) . '" type="' . esc_attr( $type ) . '" />' . "\n" );

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}

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}

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}

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}

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[498] Fix | Delete

/**

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