Parse XML categories and create RSS feed out of it...

buildakicker · 01-21-2009, 03:31 PM

Hello all,

So I am thinking of having an XML file that contains a few different categories. Is there a way to use php to create the RSS feed for each different category?

For example:

Code:

<items>
<item>
<title></title>
<description></description>
<link></link>
<pubDate></pubDate>
<category>Fire</category>
</item>

<item>
<title></title>
<description></description>
<link></link>
<pubDate></pubDate>
<category>Recreation</category>
</item>
</items>

One RSS feed for Fire, One for Recreation, parsed from the same XML file.

Then link to it like: rss.xml for the feed readers.

Thanks!

xenon · 01-21-2009, 04:38 PM

file_put_contents?

Salathe · 01-21-2009, 05:07 PM

Here's just one idea. The process is simply: find items which don't belong to our requested category and delete them.

PHP Code:


			
/**
 * Filtering an RSS feed by category.
 */

// Load the XML feed
$dom = new DOMDocument();
$dom->load('http://www.talkphp.com/external.php?type=RSS2');


// Query for the items we want to throw away
$xpath = new DOMXPath($dom);
$nodes = $xpath->query('//item[not(category = "General")]');

// Remove those unwanted items
foreach ($nodes as $node)
{
    $node->parentNode->removeChild($node);
}

// Output the filtered document
header('Content-Type: application/xml; charset='.$dom->encoding);
echo $dom->saveXML();

buildakicker · 01-21-2009, 05:29 PM

Quote:

Originally Posted by Salathe

Here's just one idea. The process is simply: find items which don't belong to our requested category and delete them.

PHP Code:


			
/**

 * Filtering an RSS feed by category.

 */



// Load the XML feed

$dom = new DOMDocument();

$dom->load('http://www.talkphp.com/external.php?type=RSS2');





// Query for the items we want to throw away

$xpath = new DOMXPath($dom);

$nodes = $xpath->query('//item[not(category = "General")]');



// Remove those unwanted items

foreach ($nodes as $node)

{

    $node->parentNode->removeChild($node);

}



// Output the filtered document

header('Content-Type: application/xml; charset='.$dom->encoding);

echo $dom->saveXML();

Thanks for the idea. I see what you are doing there... I only have php4 though... I will try and do something with domxml if I can figure it out there.