分享一个RSS类
RSS(简易信息聚合,也叫聚合内容)是一种描述和同步网站内容的格式。网络用户可以在客户端借助于支持RSS的聚合工具软件,在不打开网站内容页面的情况下阅读支持RSS输出的网站内容。
RSS的作用,就是帮助用户快速筛选获取网站最新更新的自己喜欢的内容,节省了到网站去搜寻的时间。似乎博客总是少不了RSS,下面分享一个我在WBlog程序中使用的一个RSS类
完整的代码:
<?php // +---------------------------------------------------------------------- // | YBlog // +---------------------------------------------------------------------- // | Copyright (c) 2008 http://www.yhustc.com All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: yhustc <yhustc@gmail.com> // +---------------------------------------------------------------------- // $Id$ /** +------------------------------------------------------------------------------ * RSS生成类 +------------------------------------------------------------------------------ * @author yhustc <yhustc@gmail.com> * @version $Id$ +------------------------------------------------------------------------------ */ class RSS { /** +---------------------------------------------------------- * RSS频道名 +---------------------------------------------------------- * @var string * @access protected +---------------------------------------------------------- */ protected $channel_title = ''; /** +---------------------------------------------------------- * RSS频道链接 +---------------------------------------------------------- * @var string * @access protected +---------------------------------------------------------- */ protected $channel_link = ''; /** +---------------------------------------------------------- * RSS频道描述 +---------------------------------------------------------- * @var string * @access protected +---------------------------------------------------------- */ protected $channel_description = ''; /** +---------------------------------------------------------- * RSS频道使用的小图标的URL +---------------------------------------------------------- * @var string * @access protected +---------------------------------------------------------- */ protected $channel_imgurl = ''; /** +---------------------------------------------------------- * RSS频道所使用的语言 +---------------------------------------------------------- * @var string * @access protected +---------------------------------------------------------- */ protected $language = 'zh_CN'; /** +---------------------------------------------------------- * RSS文档创建日期,默认为今天 +---------------------------------------------------------- * @var string * @access protected +---------------------------------------------------------- */ protected $pubDate = ''; protected $lastBuildDate = ''; protected $generator = 'YBlog RSS Generator'; /** +---------------------------------------------------------- * RSS单条信息的数组 +---------------------------------------------------------- * @var string * @access protected +---------------------------------------------------------- */ 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 $this->Fetch(); exit; } } ?>
在thinkphp控制器中的调用方法
<?php |
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class FeedAction extends Action { |
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// 首页 |
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public function index() { |
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$Bloginfo = M( 'Bloginfo' )->find(); //查询bloginfo表的一行记录 |
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$Bloglist = D( 'News' )->order( 'id' )->limit(10)->select(); //查询news表的记录 |
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import( "@.ORG.Rss" ); //加载Rss.class.php类文件,我放在前台项目Lib/ORG目录中。 |
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$RSS = new RSS( $Bloginfo [ 'name' ], '' , $Bloginfo [ 'description' ], '' ); //初始化类,给RSS加上标题及描述信息,具体参数看构造器__construct |
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foreach ( $Bloglist as $list ){ //遍历$Bloglist |
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$RSS ->AddItem( $list [ 'title' ],U( '/Web/' . $list [ 'id' ]), $list [ 'content' ], $list [ 'ctime' ]); |
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} |
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$RSS ->Display(); //输出日记列表,不需要模板。 |
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} |
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} |
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?> |
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