merging multiple RSS feeds into one with PHP

is this possible?
I've been looking around and googling but can't find any scripts to do this...
do you guys know of any?
Thanks

 

Hi MarcNYC,

I was just reading this thread about using Yahoo Pipes with multiple feeds:
http://www.webmasterworld.com/rss_atom/3809232.htm

I'm sure you could do it in PHP...the trick is to grab all the feeds and put them in a data stucture that you can manipulate the way you want.

A quick and dirty approach would be using regular expressions. Or you could use a DOM XML parser or some function designed to parse RSS.

 

<?php

class Feed_Amalgamator
{
    public $urls = array();
    public $data = array();

    public function addFeeds( array $feeds )
    {
        $this->urls = array_merge( $this->urls, array_values($feeds) );
    }

    public function grabRss()
    {
        foreach ( $this->urls as $feed )
        {
            $data = @new SimpleXMLElement( $feed, 0, true );
            if ( !$data )
                throw new Exception( 'Could not load: ' . $feed );
            foreach ( $data->channel->item as $item )
            {
                $this->data[] = $item;
            }
        }
    }

    public function amalgamate()
    {
        shuffle( $this->data );
        $temp = array();
        foreach ( $this->data as $item )
        {
            if ( !in_array($item->link, $this->links($temp)) )
            {
                $temp[] = $item;
            }
        }
        $this->data = $temp;
        shuffle( $this->data );
    }

    private function links( array $items )
    {
        $links = array();
        foreach ( $items as $item )
        {
            $links[] = $item->link;
        }
        return $links;
    }
}

/********* Example *********/

$urls = array( 'http://newsrss.bbc.co.uk/rss/sportonline_uk_edition/football/teams/m/man_city/rss.xml', 'http://newsrss.bbc.co.uk/rss/sportonline_uk_edition/football/teams/l/liverpool/rss.xml' );

try
{
    $feeds = new Feed_Amalgamator;
    $feeds->addFeeds( $urls );
    $feeds->grabRss();
    $feeds->amalgamate();
}
catch ( exception $e )
{
    die( $e->getMessage() );
}

foreach ( $feeds->data as $item ) :
extract( (array) $item );
?>
<h2><a href="<?php echo $link; ?>"><?php echo $title; ?></a></h2>
<p><?php echo $description; ?></p>
<p><em><?php echo $pubDate; ?></em></p>
<?php endforeach; ?>

PHP:

 

Thanks SO MUCH for posting this code man!
Yesterday late night I actually found (before I read your code) this thing called SimplePie which seems perfect... I haven't been able to do multiple feeds yet so I am messing with that... If i can't get it to do multiple I'll give up and give a try to your code, which seems like it would do the right thing.
Thanks again for taking the time

 

I just wrote it for you now, it works for BBC Feeds (and removes link repeats.) but I make no guarantees it'll work for every feed out there, especially malformed ones.

Dan.

 

check http://simplepie.org

 

You really didn't read the thread at all did you?

 

Wow you wrote this specifically for me? I am touched and feel bad now...
I am definitely going to give it a try now!

Thanks so much, even more so than before.



French-webbie, I had indeed mentioned that I had found SimplePie but have been having trouble with multiple feed... If you have any experience with multi-feed SimplePie I could use your help maybe...

 

Yes Danltn, French-webbie didn't read every part of the thread but I wouldn't gang up on somebody who pitched in for help, at least he/she took the time and I appreciate that.
You guys have all been great! Come on now, peace not war! ;-)

 

Gosh, I should not have so many tabs opened at the same time

 

we are all afflicted by that illness I think
I am for sure

 

haha...I've done that too

 

Heh my routine is go to forums, open every unread in a new tab, and either criticise others rolleyes or add my own replies...

Some posts, the OP is just so frustrating to work with, I give up and close it.

Dan.

 

btw Danltn, very nice code

 

Will it be difficult to input the feeds from a txt file? I have some 200 rss feeds i need to agregate and i was trying to categorize them, so i have 10 txt files i need to input and i was thinking if i could do that without writing them in the code.

 

Apologies for bringing up an old thread.

A feed I want to display features a <content:encoded> tag, is there a way to use the script provided by Danltn to also display this?

Thanks

 

You might also want to take a look at zRSSFeed zazar.net/developers/zrssfeed/ All it takes is one line on your p a g e [can't imagine why the site doesn't like that word] per feed.

 

Hello
Sorry to open this old topic but i need for a website a multiple reader rss , this one works but i need to catch the enclosure , someone can modify this code for the JPG image of enclosure ?
Thanks