<?php if (defined('_class_rss_php')) return; define('_class_rss_php教程',1); /**    *  使用说明：  *  $rss = new rss('redfox','http://jb51.net/',"redfox's blog");  *  $rss->additem('rss class',"http://www.1sucai.cn","xxx",date());  *  $rss->additem(...);  *  $rss->savetofile(...);  */   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);    } } ?>