实现RSS订阅类代码,PHP代码库,德仔网

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【PHP】实现RSS订阅类
作者:Hardy / 发布于2015/10/13/ 272

	?<?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;
	 }
	}

	?>
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　RSS　　订阅类　
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