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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
- Setup Your Environment – Ensure your WordPress environment is properly configured. You will need access to your WordPress installation directory.
- 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.
- 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
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. […]]]></description>
<wfw:commentRss>https://wpsandbox.net/wordpress/how-to-fetch-rss-feed-news-with-wordpress-p1171/feed</wfw:commentRss>
<slash:comments>0</slash:comments>
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</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.
Do you need a temp WordPress site? Test it now!
This code shared in this post/site is provided "AS IS" without any warranties or guarantees of any kind.
The authors and distributors of this code cannot be held responsible for any damage, data loss, or other issues that may arise from its use.
It is strongly recommended that you test this code in a staging environment before deploying it to a live site.
Always ensure you have proper backups and understand the implications of running this code on your WordPress installation. Use at your own risk.