Posted by zach on 04/26/07 01:29

Hello everyone,

I was looking for short simple script to show rss feeds on my website
and I found this one and it works awesome except I don't know what to
add or modify to limit the number of entries it shows. The entire script
is posted below. Thanks in advance for the help.

<?php
/*

Class RSSParser: 2 October 2002
Original Author: Duncan Gough
Overview: An RSS parser that uses PHP and freely available RSS/RDF/XML
feeds
to add fresh news content to your site.
Installation: Decompress the file into your webroot and include it from
whichever pages on which you want to display the data, e.g;
include("rss.php"); Hackers Note: can also be called as SSI
from a .shtml page by using: <!--include virtual="rss.php"-->
Usage: As above, just include the rss.php file from within your PHP page,
and the news will appear. You should find the HTML code in the
functions endElement(), show_title() and show_list_box() below,
feel free to modify these to match your site.
Single Feed Hack: By Gregg 't3h GeeK' van der Sluys,
http://geek.scorpiorising.ca
12-13-03. Permission granted from Duncan Gough to re-release under
the GPL. This code will output raw text and will validate as XHTML 1.0
Transitional.
Bugs graciously worked out by Russell Najar, http://www.sicomm.us
02-28-06
*/

class RSSParser {

var $title = "";
var $link = "";
var $description = "";
var $inside_item = false;

// This is an example default that I chose to display on my site -
http://geek.scorpiorising.ca/
// Add new RSS feeds using this format;
// "http://www.wherever.com/path/to/rss/" => "Display name",
var $all_rss_urls = array(
"http://freshmeat.net/backend/fm.rdf" => "Freshmeat.net",
);

function startElement( $parser, $name, $attrs='' ){
global $current_tag;

$current_tag = $name;

if( $current_tag == "ITEM" )
$this->inside_item = true;

} // endfunc startElement

function endElement( $parser, $tagName, $attrs='' ){
global $current_tag;

if ( $tagName == "ITEM" ) {

printf( "\t<br /><b><a href='%s' target='_blank'>%s</a></b>\n",
$this->link , $this->title);
printf( "\t<br />%s<br />\n", $this->description);

$this->title = "";
$this->description = "";
$this->link = "";
$this->inside_item = false;

}

} // endfunc endElement

function characterData( $parser, $data ){
global $current_tag;

if( $this->inside_item ){
switch($current_tag){

case "TITLE":
$this->title .= $data;
break;
case "DESCRIPTION":
$this->description .= $data;
break;
case "LINK":
$this->link .= $data;
break;

default:
break;

} // endswitch

} // end if

} // endfunc characterData

function parse_results( $xml_parser, $rss_parser, $file ) {

xml_set_object( $xml_parser, &$rss_parser );
xml_set_element_handler( $xml_parser, "startElement", "endElement" );
xml_set_character_data_handler( $xml_parser, "characterData" );

$fp = fopen("$file","r") or die( "Error reading XML file, $file" );

while ($data = fread($fp, 4096)) {

// parse the data
xml_parse( $xml_parser, $data, feof($fp) ) or die( sprintf( "XML
error: %s at line %d", xml_error_string( xml_get_error_code($xml_parser)
), xml_get_current_line_number( $xml_parser ) ) );

} // endwhile

fclose($fp);

xml_parser_free( $xml_parser );

} // endfunc parse_results

function show_title( $rss_url ){
?>
<small></small>
<?
} // endfunc show_title

} // endclass RSSParser

global $rss_url;

// Set a default feed
if( $rss_url == "" )
$rss_url = "http://freshmeat.net/backend/fm.rdf";

$xml_parser = xml_parser_create();
$rss_parser = new RSSParser();

$rss_parser->show_title( $rss_url );
$rss_parser->parse_results( $xml_parser, &$rss_parser, $rss_url );

?>

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