php script to create RSS-feed

I use this piece of code to create the rss-feeds on my sites. I want to share this with you all as I have learned a lot from these boards and want to give something back.

the code :

class RSSFeed {
// VARIABLES
	// channel vars
	var $channel_url;
	var $channel_title;
	var $channel_description;
	var $channel_lang;
	var $channel_copyright;
	var $channel_date;
	var $channel_creator;
	var $channel_subject;	
	// image
	var $image_url;
	// items
	var $items = array();
	var $nritems;
	
// FUNCTIONS
	// constructor
	function RSSFeed() {
       		$this->nritems=0;
		$this->channel_url='';
		$this->channel_title='';
		$this->channel_description='';
		$this->channel_lang='';
		$this->channel_copyright='';
		$this->channel_date='';
		$this->channel_creator='';
		$this->channel_subject='';
		$this->image_url='';
	}   
	// set channel vars
	function SetChannel($url, $title, $description, $lang, $copyright, $creator, $subject) {
		$this->channel_url=$url;
		$this->channel_title=$title;
		$this->channel_description=$description;
		$this->channel_lang=$lang;
		$this->channel_copyright=$copyright;
		$this->channel_date=date("Y-m-d").'T'.date("H:i:s").'+01:00';
		$this->channel_creator=$creator;
		$this->channel_subject=$subject;
	}
	// set image
	function SetImage($url) {
		$this->image_url=$url;	
	}
	// set item
	function SetItem($url, $title, $description) {
		$this->items[$this->nritems]['url']=$url;
		$this->items[$this->nritems]['title']=$title;
		$this->items[$this->nritems]['description']=$description;
		$this->nritems++;	
	}
	// output feed
	function Output() {
		$output =  '<?xml version="1.0" encoding="iso-8859-1"?>'."\n";
		$output .= '<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://purl.org/rss/1.0/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:taxo="http://purl.org/rss/1.0/modules/taxonomy/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:syn="http://purl.org/rss/1.0/modules/syndication/" xmlns:admin="http://webns.net/mvcb/" xmlns:feedburner="http://rssnamespace.org/feedburner/ext/1.0">'."\n";
		$output .= '<channel rdf:about="'.$this->channel_url.'">'."\n";
		$output .= '<title>'.$this->channel_title.'</title>'."\n";
		$output .= '<link>'.$this->channel_url.'</link>'."\n";
		$output .= '<description>'.$this->channel_description.'</description>'."\n";
		$output .= '<dc:language>'.$this->channel_lang.'</dc:language>'."\n";
		$output .= '<dc:rights>'.$this->channel_copyright.'</dc:rights>'."\n";
		$output .= '<dc:date>'.$this->channel_date.'</dc:date>'."\n";
		$output .= '<dc:creator>'.$this->channel_creator.'</dc:creator>'."\n";
		$output .= '<dc:subject>'.$this->channel_subject.'</dc:subject>'."\n";

		$output .= '<items>'."\n";
		$output .= '<rdf:Seq>';
		for($k=0; $k<$this->nritems; $k++) {
			$output .= '<rdf:li rdf:resource="'.$this->items[$k]['url'].'"/>'."\n";	
		};		
		$output .= '</rdf:Seq>'."\n";
		$output .= '</items>'."\n";
		$output .= '<image rdf:resource="'.$this->image_url.'"/>'."\n";
		$output .= '</channel>'."\n";
		for($k=0; $k<$this->nritems; $k++) {
			$output .= '<item rdf:about="'.$this->items[$k]['url'].'">'."\n";
			$output .= '<title>'.$this->items[$k]['title'].'</title>'."\n";
			$output .= '<link>'.$this->items[$k]['url'].'</link>'."\n";
			$output .= '<description>'.$this->items[$k]['description'].'</description>'."\n";
			$output .= '<feedburner:origLink>'.$this->items[$k]['url'].'</feedburner:origLink>'."\n";
			$output .= '</item>'."\n";	
		};
		$output .= '</rdf:RDF>'."\n";
		return $output;
	}
};

PHP:

You would use it like this :

$myfeed = new RSSFeed();
$myfeed->SetChannel('http://www.mysite.com/xml.rss',
		  'My feed name',
                  'My feed description',
		  'en-us',
		  'My copyright text',
                  'me',
		  'my subject');
$myfeed->SetImage('http://www.mysite.com/mylogo.jpg');
$myfeed->SetItem('http://www.mysite.com/article.php?id=bla',
	       		   'name',
	       		   'description');
....
echo $myfeed->output();

PHP:

I have a cron script that runs every now and then that writes the output to a an xml file. I ran it through a feed validator and it validates.

I hope this might be useful to somebody. Do with it what you will.

 

It looks impressive Can we have a live example using this script?

 

I'll certinly give it a go.

 

This is cool. Have been looking for something like this. Thanks for sharing.

 

My cooking site uses this script to generate it's feed. Have a look at http://www.zucchini.be/rss.xml (it's in dutch)

 

we will try it also ! very impressive !!!

 

I highly recomend magpie rss. It has built in cacheing and other neato tools

 

where it can be found ?

 

Magpie can be found at http://magpierss.sourceforge.net/
It is used to parse an rss-feed. It does not create rss feeds.
I use it on my news site. It is indeed very good.

 

ahhhhh sorry maybe magpie is not the solution here... my bad

 

Thank you for the link

 

sgthayes,

how does a static website create a rss feed from your code above ?

 

I think you have to add titles , description etc manually in the second part of the script.

 

Yep, if your site is static you'll have to add the items manually OR you could make a script that parses the directory where your static files are, then open each file and use the <title> tag for instance as the title of the feeditem and add them this way. Depends on how much static files there are and how frequently you create new ones.

 

I use mysql table and add title, url , desc and date by using a form. So when ever I add content to my site I use that form and store these info in the table. Then another page creates the rss.xml page out of this table info by taking the last 5 new entries, it also creates another JavaScript feed with the records.

As I don't add more than 4 or 5 pages in a week so easy for me to handle this way.

 

Looks nice my friend.

 

hi, I'm not taht good with php yet, can you post these files to download please? can how did you write the corn job? it will be very very helpful!

thanks

 

How to add author name in each item? I have created rss file using your script. Its realy good. But its not showing the author name. How can i set the author name.

 

nice script

I'll check this out on a spare url that I'm testing on.

cheers

 

Great script and after all this time (since 2005) this thing works great
Outputing to file and place cron on .php file
Thanks!