利用xml实现rss订阅

RSS是一种网页内容联合格式，是XML的一种，所有的RSS文档都遵循XML1.0规范。

具体示例：

<span style="font-family:Microsoft YaHei;font-size:18px;"><?xml version = "1.0" encoding = "utf-8" ?>  <rss version = "2.0" xmlns:wfw ="http://wellformedweb.org/CommentAPI/">         <channel>                <title>标题</title>                <link>链接地址</link>                <description>描述</description>                <language>描述语言</language>                <copyright>版本</copyright>                <pubdate>时间</pubdate>                <item>                       <title>日志标题</title>                    <link>日志的url访问地址</link>                       <author>日志的作者</author>                       <pubdate>日志的发布时间</pubdate>                       <description>日志的内容</description>                </item>         </channel>  </rss></span>

此时应该链接数据库，输出想要的结果。

Test.PHP

<span style="font-family:Microsoft YaHei;font-size:18px;"><?PHP         include("./conn.php");         class test{                public $title = '';                public $link = '';                public $description= '';                public $items = '';                public $template ='./test.xml';                public $dom = '';                public $rss = '';                public function__construct(){                       $this ->dom = new domDocument('1.0','utf-8');                       $this ->dom -> load($this -> template);                       $this ->rss = $this -> dom -> GetElementsByTagName('rss');                }                public functioncreateChannel(){                       $channel =$this -> dom -> createElement("channel");                       $channel-> appendChild($this -> createEle('title',$this -> title));                       $channel-> appendChild($this -> createEle('link',$this -> link));                       $channel-> appendChild($this -> createEle('description',$this ->description));                       $this ->rss -> appendChild($channel);                                        }                public functioncreateEle($name,$value){                       $element =$this -> dom -> createElement($name);                       $text = $this-> dom -> createTextNode($value);                       $element-> appendChild($text);                       return$element;                }                protected functionadditem($list){                       foreach($listas $goods){                              $this-> rss -> appendChild($this-> createitem($goods));                       }                }                public functioncreateitem($arr){                       $item = $this-> dom -> createElement("item");                       foreach($arras $key => $value){                              $item-> appendChild($this -> createEle($key,$value));                       }                       return $item;                }                                 public functiondisplay(){                       $this ->createChannel();                       $this ->additem($this -> items);                       echo $this-> dom -> savexml();                }         }         $sql = "select * fromstu";         $rs = mysql_query($sql);         while($row =mysql_fetch_assoc($rs)){                $list[] = $row;         }         $test = new test();         $test -> title = "测试标题";         $test -> link = "测试连接";         $test -> description ="测试内容";         $test -> display();         $test -> items = $list;  </span>

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