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  Classes of Md. Kausar Alam  >  RSS feed class  >  feed.class.php  >  Download  
File: feed.class.php
Role: Example script
Content type: text/plain
Description: Possible to create feed
Class: RSS feed class
Regenerate an RSS 2.0 feed from another RSS feed
Author: By
Last change:
Date: 2008-05-12 00:40
Size: 3,631 bytes
 

Contents

Class file image Download
<?php
/**
 * An open source application development framework for PHP5
 *
 * @author        Md. Kausar Alam (kausar_ss2003(at)yahoo.com)
 * @since        Version 1.0
 * file namw   feed.class.php 
 * @filesource
 */

// xmlGenerator class
class feedGenerator 
{

    //call constractor
    function feedGenerator($xml)
    {
        $this->xmlDoc = new DOMDocument();
        $this->xmlDoc->load($xml);        
    }
    
   /*
    * get link/description/title
    * eleminate the unwnate char repalceing HTML char
    */
    function replaceHTMLCharacter($str)
    {
        $str  = preg_replace('/&/',        '&amp;',    $str);
        $str  = preg_replace('/</',        '&lt;',        $str);
        $str  = preg_replace('/>/',        '&gt;',        $str);
        $str  = preg_replace('/\"/',    '&quot;',    $str);
        $str  = preg_replace('/\'/',    '&apos;',    $str);

        return $str;
    }
    
    // get header only
    function getHeader()
    {                    
        $channel        = $this->xmlDoc->getElementsByTagName('channel')->item(0);
         // get channel title 
        $channel_title  = $channel->getElementsByTagName('title')->item(0)->childNodes->item(0)->nodeValue;
        $item_title      = $this->replaceHTMLCharacter($item_title);
        // get channel link
        $channel_link     = $channel->getElementsByTagName('link')->item(0)->childNodes->item(0)->nodeValue;
        $channel_link   = $this->replaceHTMLCharacter($channel_link);        
        // get channel description
        $channel_desc     = $channel->getElementsByTagName('description')->item(0)->childNodes->item(0)->nodeValue;
        $channel_desc   = $this->replaceHTMLCharacter($channel_desc);
        
        //return  header
        return '<?xml version="1.0" encoding="UTF-8" ?>
                 <rss xmlns:dc="http://purl.org/dc/elements/1.1/" version="2.0">                        
                 <channel>                        
                 <title>'.$channel_title.'</title>
                 <description>'.$channel_desc.'</description>
                 <link>'.$channel_link.'</link>                        
                <language>en-us</language>';
    
    }
    
    // main body of xml file here generate
    function getBody()
    {
        
        $strBody= "";                    
        //get and output "<item>" elements
        $x= $this->xmlDoc->getElementsByTagName('item');
        //loop will continue untill out site's xml file has finished
        for ($i=0; $i<$x->length; $i++)
         {
             //get title
             $item_title  = $x->item($i)->getElementsByTagName('title')->item(0)->childNodes->item(0)->nodeValue;
             $item_title  = $this->replaceHTMLCharacter($item_title);             
             //get link
             $item_link   = $x->item($i)->getElementsByTagName('link')->item(0)->childNodes->item(0)->nodeValue;             
             $item_link   =  $this->replaceHTMLCharacter($item_link);             
             //get description
             $item_desc   =  $x->item($i)->getElementsByTagName('description')->item(0)->childNodes->item(0)->nodeValue;            
             $item_desc   =  $this->replaceHTMLCharacter($item_desc);
             
             $strBody= $strBody . '<item><title>'.$item_title.'</title>
                                      <description>'.$item_desc.'</description>
                                      <link>'.$item_link.'</link>
                                      <guid isPermaLink="true">'.$item_link.'</guid>
                                      </item>';
                                          
         }
         //return main body of xml file
        return $strBody;
    }
    //return footer
    function getFooter()
    {    
          return "</channel></rss>";
    }
    
    //write all data in xml file
    function generateXMLFile()
    {
        $handle  = fopen("feed.xml", "w");
        fwrite($handle , $this->getHeader());
        fwrite($handle , $this->getBody());
        fwrite($handle , $this->getFooter());
        fclose($handle);
    }


}// end of class
    
    //create object
    $feedApp =new feedGenerator("http://rss.msnbc.msn.com/id/3032091/device/rss/rss.xml");    
    //write on xml file
    $feedApp->generateXMLFile();

    
 header('location:feed.xml');
 exit();
        
 
?>