php生成RSS类

<?php

002class RSS

003{

004    /**

005     +----------------------------------------------------------

006     * RSS频道名

007     +----------------------------------------------------------

008     */

009    protected$channel_title = '';

010    /**

011     +----------------------------------------------------------

012     * RSS频道链接

013     +----------------------------------------------------------

014     */

015    protected$channel_link = '';

016    /**

017     +----------------------------------------------------------

018     * RSS频道描述

019     +----------------------------------------------------------

020     */

021    protected$channel_description = '';

022    /**

023     +----------------------------------------------------------

024     * RSS频道使用的小图标的URL

025     +----------------------------------------------------------

026     */

027    protected$channel_imgurl = '';

028    /**

029     +----------------------------------------------------------

030     * RSS频道所使用的语言

031     +----------------------------------------------------------

032     */

033    protected$language = 'zh_CN';

034    /**

035     +----------------------------------------------------------

036     * RSS文档创建日期，默认为今天

037     +----------------------------------------------------------

038     */

039    protected$pubDate = '';

040    protected$lastBuildDate = '';

041   

042    protected$generator = 'YBlog RSS Generator';

043   

044    /**

045     +----------------------------------------------------------

046     * RSS单条信息的数组

047     +----------------------------------------------------------

048     */

049    protected$items = array();

050   

051    /**

052     +----------------------------------------------------------

053     * 构造函数

054     +----------------------------------------------------------

055     * @access public 

056     +----------------------------------------------------------

057     * @param string $title  RSS频道名

058     * @param string $link  RSS频道链接

059     * @param string $description  RSS频道描述

060     * @param string $imgurl  RSS频道图标

061     +----------------------------------------------------------

062     */

063    publicfunction __construct($title,$link, $description,$imgurl = '')

064    {

065        $this->channel_title =$title;

066        $this->channel_link =$link;

067        $this->channel_description =$description;

068        $this->channel_imgurl =$imgurl;

069        $this->pubDate =Date('Y-m-d H:i:s', time());

070        $this->lastBuildDate =Date('Y-m-d H:i:s', time());

071    }

072   

073    /**

074     +----------------------------------------------------------

075     * 设置私有变量

076     +----------------------------------------------------------

077     * @access public 

078     +----------------------------------------------------------

079     * @param string $key  变量名

080     * @param string $value  变量的值

081     +----------------------------------------------------------

082     */

083     publicfunction Config($key,$value)

084     {

085        $this->{$key} =$value;

086     }

087   

088    /**

089     +----------------------------------------------------------

090     * 添加RSS项

091     +----------------------------------------------------------

092     * @access public 

093     +----------------------------------------------------------

094     * @param string $title  日志的标题

095     * @param string $link  日志的链接

096     * @param string $description  日志的摘要

097     * @param string $pubDate  日志的发布日期

098     +----------------------------------------------------------

099     */

100     functionAddItem($title,$link, $description,$pubDate)

101     {

102        $this->items[] =array('title'=> $title,'link' => $link,'description' => $description, 'pubDate'=> $pubDate);

103     }

104   

105     /**

106     +----------------------------------------------------------

107     * 输出RSS的XML为字符串

108     +----------------------------------------------------------

109     * @access public 

110     +----------------------------------------------------------

111     * @return string

112     +----------------------------------------------------------

113     */

114    publicfunction Fetch()

115    {

116        $rss= "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\r\n";

117        $rss= "<rss version=\"2.0\">\r\n";

118        $rss.= "<channel>\r\n";

119        $rss.= "<title><![CDATA[{$this->channel_title}]]></title>\r\n";

120        $rss.= "<description><![CDATA[{$this->channel_description}]]></description>\r\n";

121        $rss.= "<link>{$this->channel_link}</link>\r\n";

122        $rss.= "<language>{$this->language}</language>\r\n";

123   

124        if(!empty($this->pubDate))

125            $rss.= "<pubDate>{$this->pubDate}</pubDate>\r\n";

126        if(!empty($this->lastBuildDate))

127            $rss.= "<lastBuildDate>{$this->lastBuildDate}</lastBuildDate>\r\n";

128        if(!empty($this->generator))

129            $rss.= "<generator>{$this->generator}</generator>\r\n";

130   

131        $rss.= "<ttl>5</ttl>\r\n";

132   

133        if(!empty($this->channel_imgurl)) {

134            $rss.= "<image>\r\n";

135            $rss.= "<title><![CDATA[{$this->channel_title}]]></title>\r\n";

136            $rss.= "<link>{$this->channel_link}</link>\r\n";

137            $rss.= "<url>{$this->channel_imgurl}</url>\r\n";

138            $rss.= "</image>\r\n";

139        }

140   

141        for($i = 0; $i < count($this->items);$i++) {

142            $rss.= "<item>\r\n";

143            $rss.= "<title><![CDATA[{$this->items[$i]['title']}]]></title>\r\n";

144            $rss.= "<link>{$this->items[$i]['link']}</link>\r\n";

145            $rss.= "<description><![CDATA[{$this->items[$i]['description']}]]></description>\r\n";

146            $rss.= "<pubDate>{$this->items[$i]['pubDate']}</pubDate>\r\n";

147            $rss.= "</item>\r\n";

148        }

149   

150        $rss.= "</channel>\r\n</rss>";

151        return$rss;

152    }

153   

154    /**

155     +----------------------------------------------------------

156     * 输出RSS的XML到浏览器

157     +----------------------------------------------------------

158     * @access public 

159     +----------------------------------------------------------

160     * @return void

161     +----------------------------------------------------------

162     */

163    publicfunction Display()

164    {

165        header("Content-Type: text/xml; charset=utf-8");

166        echo$this->Fetch();

167        exit;

168    }

169}

170?>