RSS（簡易信息聚合）：是一種消息來源格式規(guī)范，用以發(fā)布經(jīng)常更新數(shù)據(jù)的網(wǎng)站，例如博客文章、新聞、音頻或視頻的網(wǎng)摘。RSS文件（或稱做摘要、網(wǎng)絡(luò)摘要、或頻更新，提供到頻道）包含了全文或是節(jié)錄的文字，再加上發(fā)用者所訂閱之網(wǎng)摘布數(shù)據(jù)和授權(quán)的元數(shù)據(jù)。網(wǎng)絡(luò)摘要能夠使發(fā)行者自動地發(fā)布他們的數(shù)據(jù)，同時也使讀者能更夠定期更新他們喜歡的網(wǎng)站或是聚合不同網(wǎng)站的網(wǎng)摘。RSS摘要可以借由RSS閱讀器、feed reader或是aggregator等網(wǎng)頁或以桌面為架構(gòu)的軟件來閱讀。標(biāo)準(zhǔn)的XML檔式可允許信息在一次發(fā)布后通過不同的程序閱覽。用戶借由將網(wǎng)摘輸入RSS閱讀器或是用鼠標(biāo)點取瀏覽器上指向訂閱程序的RSS小圖標(biāo)之URI（非通常稱為URL）來訂閱網(wǎng)摘。RSS閱讀器定期檢閱是否有更新，然后下載給監(jiān)看用戶界面。

RSS可以是以下三種解釋中任一種的縮寫，但其實這三者都是指同一種聯(lián)合供稿（Syndication）的技術(shù)：

這篇文章主要介紹了PHP生成RSS文件類,可實現(xiàn)PHP生成RSS文件的功能,對于網(wǎng)站建設(shè)與優(yōu)化來說具有一定的實用價值,需要的朋友可以參考下

PHP RSS 生成類實例代碼如下:

代碼如下:

<?php 
if (defined('_class_rss_php')) return; 
define('_class_rss_php教程',1); 

class rss { 
   //public 
   $rss_ver = "2.0"; 
   $channel_title = ''; 
   $channel_link = ''; 
   $channel_description = ''; 
   $language = 'zh_cn'; 
   $copyright = ''; 
   $webmaster = ''; 
   $pubdate = ''; 
   $lastbuilddate = ''; 
   $generator = 'redfox rss generator'; 
 
   $content = ''; 
   $items = array(); 
 
   function rss($title, $link, $description) { 
       $this->channel_title = $title; 
       $this->channel_link = $link; 
       $this->channel_description = $description; 
       $this->pubdate = date('y-m-d h:i:s',time()); 
       $this->lastbuilddate = date('y-m-d h:i:s',time()); 
   } 
 
   function additem($title, $link, $description ,$pubdate) { 
       $this->items[] = array('titile' => $title , 
                        'link' => $link, 
                        'description' => $description, 
                        'pubdate' => $pubdate); 
   } 
 
   function buildrss() { 
       $s = "<!--l version="1.0" encoding="gb2312"--> "; 
       // start channel 
       $s .= " "; 
       $s .= " " 
       $s .= "<link />{$this->channel_link} "; 
       $s .= "{$this->channel_description} "; 
       $s .= "{$this->language} "; 
       if (!emptyempty($this->copyright)) { 
          $s .= "{$this->copyright} "; 
       } 
       if (!emptyempty($this->webmaster)) { 
          $s .= "{$this->webmaster} "; 
       } 
       if (!emptyempty($this->pubdate)) { 
          $s .= "{$this->pubdate} "; 
       } 
 
       if (!emptyempty($this->lastbuilddate)) { 
          $s .= "{$this->lastbuilddate} "; 
       } 
 
       if (!emptyempty($this->generator)) { 
          $s .= "{$this->generator} "; 
       } 
       
       // start items 
       for ($i=0;$iitems),$i++) { 
           $s .= " "; 
           $s .= " "; 
           $s .= "<link />{$this->items[$i]['link']} "; 
           $s .= "<!--data[{$thi-->items[$i]['description']}]]> "; 
           $s .= "{$this->items[$i]['pubdate']} ";           
           $s .= " "; 
       } 
      
      // close channel 
      $s .= " "; 
      $this->content = $s; 
   } 
 
   function show() { 
       if (emptyempty($this->content)) $this->buildrss(); 
       header('content-type:text/xml'); 
       echo($this->content); 
   } 
 
   function savetofile($fname) { 
       if (emptyempty($this->content)) $this->buildrss(); 
       $handle = fopen($fname, 'wb'); 
       if ($handle === false)  return false; 
       fwrite($handle, $this->content); 
       fclose($handle); 
   } 
} 
?>

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