ThaiSEOBoard.com

http://www-128.ibm.com/developerworks/library/w-rss.html
http://sourceforge.net/search/?type_of_search=soft&words=RSS+generate
http://rssgenesis.sourceforge.net/

<?php
/*
+--------------------------------------------------------------------------------+
| RSSReader
+--------------------------------------------------------------------------------+
|
|	Description
|	-> Reads a given RSS feed
|
|	Features
|	-> You can customize the initial opening tag by setting
|		the $main_id var
|	-> You can also customize which tags RSSReader will 
|		recognize as sub tags by adding tags to the $sub_keys
|
|	Usage&#58;
|		$rss = new RSSReader&#40;"http&#58;//http&#58;//rss.news.yahoo.com/rss/topstories"&#41;;
|		$rss->Read&#40;&#41;;
|		// For complete feed array&#58;
|		print_r&#40;$this->feed['array'&#93;&#41;;
|		// For just the items&#58;
|		print_r&#40;$this->feed['items'&#93;&#41;;
|
|		OR
|
|		$rss = new RSSReader&#40;&#41;;
|		print_r&#40;$rss->Read&#40;"http&#58;//rss.news.yahoo.com/rss/topstories"&#41;&#41;;
|
|	Author&#58;			Matt Froese
|	Contact&#58;		matt@spcan.com
|	Version&#58; 		1.0
|	Last Updated&#58;	July 14, 2005	
|
+--------------------------------------------------------------------------------+
*/
class RSSReader &#123;
	
	var $parser 			= '';
    var $file   			= '';
    var $current_tag		= '';
       
    var $main_id			= 'CHANNEL';
    var $sub_keys			= array &#40;'IMAGE', 'ITEM'&#41;;	   
    
    var $feed 				= array &#40;	'header' => '',
    									'items' => '' &#41;;
    
    var $items              = array&#40;&#41;;
    var $data 				= array&#40;&#41;;
    var $feed_data 			= array&#40;&#41;;
    
    var $errors 			= array&#40;&#41;;
    
	/*	
	+--------------------------------------------------------------------------------+
	| RSSReader
	+--------------------------------------------------------------------------------+	
	*/
    function RSSReader&#40; $file = '' ,$encoding='UTF-8'&#41; &#123;
        $this->file = &#40; $file == "" &#41; ? "" &#58; $file;
    &#125;
    
	/*	
	+--------------------------------------------------------------------------------+
	| Read
	+--------------------------------------------------------------------------------+	
	*/
    function Read&#40; $file = '' &#41; &#123;    	
       	$this->file = &#40; $file == "" &#41; ? $this->file &#58; $file;
        if&#40; preg_match&#40;"/^http&#58;\/\/&#40;[^\/&#93;+&#41;&#40;.*&#41;$/", $this->file, $matches&#41; &#41; &#123;

            $host 	= $matches[1&#93;;
            $uri 	= $matches[2&#93;;

            $request = "GET " . $uri . " HTTP/1.0\r\n";
            $request .= "Host&#58; " . $host . "\r\n";
            $request .= "Connection&#58; close\r\n\r\n";

            if&#40; $http = fsockopen&#40;$host, 80, $errno, $errstr, 5&#41; &#41; &#123;
                fwrite&#40;$http, $request&#41;;
                $timeout = time&#40;&#41; + 5;
                
                $response = "";
                while&#40;time&#40;&#41; < $timeout && !feof&#40;$http&#41;&#41; &#123;
                    $response .= fgets&#40;$http, 4096&#41;;
                &#125;
                list&#40;$header, $xml&#41; = preg_split&#40;"/\r?\n\r?\n/", $response, 2&#41;;
                if&#40; preg_match&#40;"/^HTTP\/[0-9\.&#93;+\s+&#40;\d+&#41;\s+/", $header, $matches&#41; &#41;&#123;
                    $status = $matches[1&#93;;
                    if&#40; $status == 200 &#41; &#123;
                        $this->parser = xml_parser_create&#40;$encoding&#41;;
                        xml_set_object&#40;$this->parser, $this&#41;;
                        xml_set_element_handler&#40;$this->parser, "startElement", "endElement"&#41;;
                        xml_set_character_data_handler&#40;$this->parser, "characterData"&#41;;
                        xml_parse&#40;$this->parser, trim&#40;$xml&#41;&#41;;
                    &#125; else &#123;
                        $this->errors[&#93; = "Cannot retrieve feed&#58; HTTP returned <b>" . $status . "</b>.";
                    &#125;
                &#125; else &#123;
                    $this->errors[&#93; = "Cannot get status from header.";
                &#125;
            &#125; else &#123;
               $this->errors[&#93; = "Cannot connect to <b>" . $host .  "</b>.";
            &#125;
        &#125; else &#123;
            $this->errors[&#93; = "Invalid file &#40;" . $this->file . "&#41;.";
        &#125;
		$this->feed['array'&#93; 	= $this->feed_data;
		$this->feed['items'&#93;	= $this->feed_data['ITEM'&#93;;
        return $this->feed['array'&#93;;
    &#125;
    
	/*	
	+--------------------------------------------------------------------------------+
	| startElement
	+--------------------------------------------------------------------------------+	
	*/
    function startElement&#40;$parser, $name, $attrs&#41; &#123;
        $this->current_tag = $name;
    	
        if&#40; $this->current_tag == $this->main_id &#41; &#123;
            $this->inside_tag[ $this->main_id &#93; = true;
    	&#125;
    	foreach&#40; $this->sub_keys as $key &#41; &#123;
    		if&#40; $this->current_tag == $key &#41; &#123;
    			$this->inside_tag[ $key &#93; = true;
    			break;
    		&#125;
    	&#125;
    &#125;

	/*	
	+--------------------------------------------------------------------------------+
	| characterData
	+--------------------------------------------------------------------------------+	
	*/
    function characterData&#40;$parser, $data&#41; &#123; 
    	// skip if this element == ""
    	if&#40; trim&#40;$data&#41; != "" &#41; &#123;
	    	if&#40; $this->inside_tag[ $this->main_id &#93; &#41; &#123; 			
				$done = false;
		    	foreach&#40; $this->sub_keys as $key &#41; &#123;
		    		if&#40; isset&#40;$this->inside_tag[ $key &#93;&#41; && $this->inside_tag[ $key &#93; == true &#41; &#123;
		    			if&#40; isset&#40;$this->data[ $key &#93;[ $this->current_tag &#93;&#41; &#41; &#123;
		    				$this->data[ $key &#93;[ $this->current_tag &#93; 	.= $data;
		    			&#125; else &#123;
		    				$this->data[ $key &#93;[ $this->current_tag &#93; 	= $data;	
		    			&#125;
		    			$done 										= true;
		    			break;
		    		&#125;
		    	&#125;
	    		if&#40; $done == false &#41; &#123;
	    			$this->feed_data[ $this->current_tag &#93; = $data;		
	    		&#125;			
	    	&#125; 
    	&#125;       
    &#125;

	/*	
	+--------------------------------------------------------------------------------+
	| endElement
	+--------------------------------------------------------------------------------+	
	*/
    function endElement&#40;$parser, $name&#41; &#123;    
    	    	
    	foreach&#40; $this->sub_keys as $key &#41; &#123;
    		if&#40; $name == $key &#41; &#123;
    			$this->inside_tag[ $key &#93; 					= false;    			
    			$this->feed_data[ $key &#93;[&#93; 	= $this->data[ $key &#93;;
    			$this->data[ $key &#93; 						= array&#40;&#41;;
    			break;
    		&#125;
    	&#125;
    	if&#40; $name == $this->main_id &#41; &#123;
            $this->inside_tag[ $this->main_id &#93; = false;
    	&#125;    
        
        $this->current_tag = "";
    &#125;
&#125;
?>