<?php
class rss
{
/**
+----------------------------------------------------------
* rss频道名
+----------------------------------------------------------
*/
protected $channel_title = '';
/**
+----------------------------------------------------------
* rss频道链接
+----------------------------------------------------------
*/
protected $channel_link = '';
/**
+----------------------------------------------------------
* rss频道描述
+----------------------------------------------------------
*/
protected $channel_description = '';
/**
+----------------------------------------------------------
* rss频道使用的小图标的url
+----------------------------------------------------------
*/
protected $channel_imgurl = '';
/**
+----------------------------------------------------------
* rss频道所使用的语言
+----------------------------------------------------------
*/
protected $language = 'zh_cn';
/**
+----------------------------------------------------------
* rss文档创建日期，默认为今天
+----------------------------------------------------------
*/
protected $pubdate = '';
protected $lastbuilddate = '';
protected $generator = 'yblog rss generator';
/**
+----------------------------------------------------------
* rss单条信息的数组
+----------------------------------------------------------
*/
protected $items = array();
/**
+----------------------------------------------------------
* 构造函数
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param string $title rss频道名
* @param string $link rss频道链接
* @param string $description rss频道描述
* @param string $imgurl rss频道图标
+----------------------------------------------------------
*/
public function __construct($title, $link, $description, $imgurl = '')
{
$this->channel_title = $title;
$this->channel_link = $link;
$this->channel_description = $description;
$this->channel_imgurl = $imgurl;
$this->pubdate = date('y-m-d h:i:s', time());
$this->lastbuilddate = date('y-m-d h:i:s', time());
}
/**
+----------------------------------------------------------
* 设置私有变量
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param string $key 变量名
* @param string $value 变量的值
+----------------------------------------------------------
*/
public function config($key,$value)
{
$this->{$key} = $value;
}
/**
+----------------------------------------------------------
* 添加rss项
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @param string $title 日志的标题
* @param string $link 日志的链接
* @param string $description 日志的摘要
* @param string $pubdate 日志的发布日期
+----------------------------------------------------------
*/
function additem($title, $link, $description, $pubdate)
{
$this->items[] = array('title' => $title, 'link' => $link, 'description' => $description, 'pubdate' => $pubdate);
}
/**
+----------------------------------------------------------
* 输出rss的xml为字符串
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @return string
+----------------------------------------------------------
*/
public function fetch()
{
$rss .= "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\r\n";
$rss .= "<rss version=\"2.0\">\r\n";
$rss .= "<channel>\r\n";
$rss .= "<title><![cdata[{$this->channel_title}]]></title>\r\n";
$rss .= "<description><![cdata[{$this->channel_description}]]></description>\r\n";
$rss .= "<link>{$this->channel_link}</link>\r\n";
$rss .= "<language>{$this->language}</language>\r\n";
if (!empty($this->pubdate))
$rss .= "<pubdate>{$this->pubdate}</pubdate>\r\n";
if (!empty($this->lastbuilddate))
$rss .= "<lastbuilddate>{$this->lastbuilddate}</lastbuilddate>\r\n";
if (!empty($this->generator))
$rss .= "<generator>{$this->generator}</generator>\r\n";
$rss .= "<ttl>5</ttl>\r\n";
if (!empty($this->channel_imgurl)) {
$rss .= "<image>\r\n";
$rss .= "<title><![cdata[{$this->channel_title}]]></title>\r\n";
$rss .= "<link>{$this->channel_link}</link>\r\n";
$rss .= "<url>{$this->channel_imgurl}</url>\r\n";
$rss .= "</image>\r\n";
}
for ($i = 0; $i < count($this->items); $i++) {
$rss .= "<item>\r\n";
$rss .= "<title><![cdata[{$this->items[$i]['title']}]]></title>\r\n";
$rss .= "<link>{$this->items[$i]['link']}</link>\r\n";
$rss .= "<description><![cdata[{$this->items[$i]['description']}]]></description>\r\n";
$rss .= "<pubdate>{$this->items[$i]['pubdate']}</pubdate>\r\n";
$rss .= "</item>\r\n";
}
$rss .= "</channel>\r\n</rss>";
return $rss;
}
/**
+----------------------------------------------------------
* 输出rss的xml到浏览器
+----------------------------------------------------------
* @access public
+----------------------------------------------------------
* @return void
+----------------------------------------------------------
*/
public function display()
{
header("content-type: text/xml; charset=utf-8");
echo $this->fetch();
exit;
}
}
?>
