Wordpress development techniques #2 – Fetching RSS feeds with wordpress

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// Include the RSS functions. Older versions of wordpress could use include_once (ABSPATH . WPINC . '/rss-functions.php') or include_once (ABSPATH . WPINC . '/rss.php');;
include_once(ABSPATH . WPINC . '/rss-functions.php');

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// Fetch a feed
$feed = fetch_rss("http://yourfeedaddress");

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$items = array_slice($feed->items, 0, $maxitems);

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// Fetch a feed, replace $limit with the max results you want
wp_rss("http://yourfeedaddress", $limit);

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<?php
	// Include the RSS functions of wordpress
	include_once(ABSPATH . WPINC . '/rss-functions.php')
	// Grab my RSS feed
	$feed = fetch_rss("http://del.icio.us/rss/mikejolley");
        // I want 5 results please
	$maxitems = 5;
	$items = array_slice($feed->items, 0, $maxitems);
        // Output the results!
	if(!empty($items)) {
		echo '<ul>';
		foreach ($items as $item) {
			echo '<li>';
			echo '<a href="';
                        // This is a bit messy, but it makes the output valid XHTML strict by removing ampersands
			$item['link'] = str_replace("&", "&amp;", $item['link']);
			$item['link'] = str_replace("&amp;&amp;", "&amp;", $item['link']);
                        // End of messyness. Output the link
			echo $item['link'];
			echo '">';
                        // Output the title
			echo $item['title'];
			echo '</a>';
                        // If i've written a description, output it
			if (isset($item['description'])) {
			        echo '<br />';
				echo $item['description'];
			}
			echo '</li>';
		}
		echo '</ul>';
	}
?>

12 Responses to “Wordpress development techniques #2 – Fetching RSS feeds with wordpress”

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• 3 - Jenny says:

  

  I am totally lost. But I wanna figure this out. I really do.

  Comment made on July 16, 2007 at 5:18 pm

• 4 - Mark says:

  

  Hey, man. I love your site. I use it all the time to make sure I’m coding stuff right. :]

  Comment made on August 3, 2007 at 2:02 am

• 5 - Lakshmi Mareddy says:

  

  Pretty cool Mike! or should I say “Jolley Good”… I had played with Magpie separately long back, but didnt know it was built-in in WP. Now after reading your article, my mind is racing… A big THANK YOU to you for coming up with this…

  Comment made on September 22, 2007 at 10:52 pm

• 6 - Christopher Miles says:

  

  Thanks a lot for this post; I’m now using the native RSS fetcher in Wordpress to create a blogroll on my site using del.icio.us links, and a current and recent reading list from my Google Library RSS feed

  I’m spending half my waking day thinking of new and fiendish ways of parsing RSS feeds to my site now!

  (”Half my waking day” and “fiendish” are probably overstating it a bit.)

  Comment made on November 20, 2007 at 2:38 pm

• 7 - Mark says:

  

  Your lesson is similar to one I found on the wordpress codex but yours is more detailed. I have one question: Do you know if there is a way to display/echo the pubdate for each item? I have not been able to figure that out.

  Thanks!

  Comment made on December 14, 2007 at 11:07 pm

• 8 - Feedburn your delicious rss feeds! | nemetral says:

  

  [...] a nice how-to on Blue Anvil Journal, but you may see an error happening right in the [...]

  Pingback made on April 23, 2008 at 1:02 pm

• 9 - Steve says:

  

  Is it just me, or does anyone else see, “Warning: array_slice() [function.array-slice]: The first argument should be an array in /home/sites/blue-anvil.com/public_html/wp-content/plugins/phpexec.php(41) : eval()’d code on line 4″, in the example boxes? The only reason I ask, is because I am getting this error too, when I try to parse a feed from my own website. It works the first time, but then on refresh it dies and give me a similar error.

  Comment made on May 7, 2008 at 4:59 pm

• 10 - Jamie says:

  

  How can I add things like author and date? I’ve tried things like:

  echo $item['dc:publisher'];

  echo $item['pubdate'];

  Unsuccessfully.

  Comment made on May 12, 2008 at 9:46 pm

• 11 - Mike Jolley says:

  

  Not sure why there are errors…maybe wordpress team changed something. There is a new function called get_rss however. Maybe that will work.

  Comment made on May 13, 2008 at 11:24 am

• 12 - bamajr says:

  

  There was an article which caught my attention on MSN about Facebook. (See it by clicking here)

  This article was written by a writer for PCWorld and posted on the PCWorld site. (See it by clicking here)

  This article was pulled by MSN and displayed as a post to their tech site.

  Credit was given to the PCWorld Writer, but it was posted as a new article on MSN.

  This is what I’m trying to do. I want to pull related tech articles from places like PCWorld and put them on my site as a new blog article (Of course, credit would be given to the original writer!)

  How is this done?

  Comment made on May 21, 2009 at 3:40 pm

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