How to Fetch RSS Feed/News in WordPress

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Introduction

Fetching RSS feeds in WordPress can be efficiently handled using the fetch_feed() function. This built-in WordPress function which simplifies the process of retrieving RSS feed items from a remote (WordPress) site.

Step-by-Step Guide

  1. Setup Your Environment – Ensure your WordPress environment is properly configured. You will need access to your WordPress installation directory.
  2. Create a Custom PHP File – Create a custom PHP file in your WordPress theme or a custom plugin. This file will include the necessary code to fetch and display the RSS feed.
  3. Include WordPress Configuration and Functions – To use WordPress functions outside of the default theme files, you need to include the WordPress configuration and functions files. Here’s how you can do it:

Example how to fetch and display RSS

This is a standalone php script that loads wp-config and WordPress. It would be useful if you have an existing PHP site along with the WordPress site.

<?php

/**
 * Display the latest 5 posts from a given RSS feed.
 * This doesn't load WordPress and is intended to be used from a custom php file and using WP indirectly.
 * @link https://wpsandbox.net/1171
 */
define('WP_USE_THEMES', false);

// Adjust the path to wp-config.php as needed.
include_once( dirname(dirname(__DIR__)) . '/wp-config.php' );

include_once( ABSPATH . WPINC . '/feed.php' );

$rss = fetch_feed('https://example.com/feed/');

if ( ! is_wp_error( $rss ) ) {
	$maxitems = $rss->get_item_quantity(5); // specify number of items
	$rss_items = $rss->get_items(0, $maxitems);

	if ( $maxitems == 0 ) {
		echo 'No items found.';
	} else {
		foreach ( $rss_items as $item ) {
			$title = esc_html( $item->get_title() );
			$link = $item->get_permalink();
			$link_esc = esc_url( $link );
			$description = esc_html( $item->get_description() );

			echo '<h2><a href="' . $link_esc . '">' . $title . '</a></h2>';
			echo '<p>' . $description . '</p>';
		}
	}
} else {
	echo 'An error occurred while fetching the RSS feed.';
}

Running the code above for our site’s fees shows this list

Image 1

If you’re using this within WordPress you may want to create a shortcode that outputs the links using the code above.

If you’re accessing a WordPress site you just need to type site/feed to get to the feed source.

The RAW RSS code looks like this

<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>WPSandbox</title>
	<atom:link href="https://wpsandbox.net/feed" rel="self" type="application/rss+xml" />
	<link>https://wpsandbox.net</link>
	<description>Free WordPress Sandbox</description>
	<lastBuildDate>Mon, 17 Jun 2024 13:56:43 +0000</lastBuildDate>
	<language>en-US</language>
	<sy:updatePeriod>
	hourly	</sy:updatePeriod>
	<sy:updateFrequency>
	1	</sy:updateFrequency>
	<generator>https://wordpress.org/?v=6.5.4</generator>
	<item>
		<title>How to Fetch RSS Feed/News with WordPress</title>
		<link>https://wpsandbox.net/wordpress/how-to-fetch-rss-feed-news-with-wordpress-p1171</link>
					<comments>https://wpsandbox.net/wordpress/how-to-fetch-rss-feed-news-with-wordpress-p1171#respond</comments>
		
		<dc:creator><![CDATA[WPSandbox]]></dc:creator>
		<pubDate>Mon, 17 Jun 2024 13:53:38 +0000</pubDate>
				<category><![CDATA[WordPress]]></category>
		<guid isPermaLink="false">https://wpsandbox.net/?p=1171</guid>

					<description><![CDATA[It seems the proper way to fetch RSS feeds is using fetch_feed() WordPress function. Fetching RSS feeds in WordPress can be efficiently handled using the fetch_feed() function. This built-in function simplifies the process of retrieving and displaying RSS feed items on your WordPress site. Below is a step-by-step guide to help you set this up. [&#8230;]]]></description>
		
					<wfw:commentRss>https://wpsandbox.net/wordpress/how-to-fetch-rss-feed-news-with-wordpress-p1171/feed</wfw:commentRss>
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			</item>
	</channel>
</rss>

Common RSS errors

Deprecated: File rss.php is deprecated since version 3.0.0! Use wp-includes/class-simplepie.php

It seems the whole wp-includes/rss.php was totally deprecated for some (good) reason.

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