PHP商城RSS订阅源类开发详解（原创）

 1 <?xml version="1.0" encoding="utf-8" ?> 
 2 
 3 <rss version="2.0" xmlns:wfw="http://wellformedweb.org/CommentAPI/">
 4 
 5         <channel>
 6 
 7                     <title>标题></title>
 8 
 9                     <link>链接地址</link>
10 
11                     <description>描述</description>
12 
13                     <language>描述语言</language>
14 
15                     <copyright>版本</copyright>
16 
17                     <pubDate>21 Oct 2008 01:43:15 GMT</pubDate>
18 
19                     < item>
20 
21                                 <title>日志的标题1</title>
22 
23                                 <link>日志的URL访问地址</link>
24 
25                                 <author>日志的作者</author>
26 
27                                 <pubDate>日志的发布日期</pubDate>
28 
29                                 <description>日志的内容</description>
30 
31                     </item>        
32 
33                     < item>
34 
35                                 <title>日志的标题2</title>
36 
37                                 <link>日志的URL访问地址</link>
38 
39                                 <author>日志的作者</author>
40 
41                                  <pubDate>日志的发布日期</pubDate>
42 
43                                 <description>日志的内容</description>
44 
45                     </item>
46 
47         </channel>
48 
49 </rss>

 1 <?php
 2  
 3 //连接数据库，动态生成RSS feed
 4 //连接数据库，取得最新的10条商品，输出XML feed
 5  
 6 class feed_class{
 7  
 8         public $title = ‘‘;                 //channel的title
 9         public $link  = ‘‘;                //channel的link
10         public $description = ‘‘;     //channel的description
11         public $itemlist = array();
12  
13         public $template = ‘‘;        //xml模板
14         protected $dom = null;
15         protected $rss = null;
16         protected $channel = null;
17  
18         public function __construct(){
19             $this->dom = new DomDocument("1.0","utf-8");
20             $this->dom->load(‘./template.xml‘);
21             $this->dom->formatOutput = true;
22             $this->rss = $this->dom->getElementsByTagName(‘rss‘)->item(0);
23         }
24  
25     //调用createItem,把所有的item节点生成，再输出
26         public function display(){
27             $this->createChannel();
28             $this->addItem($this->itemlist);
29             header(‘content-type: text/xml‘);
30             echo $this->dom->saveXML();
31             //$this->dom->save(‘01.xml‘);        //如需将代码保存，则打开此语句
32         }
33     
34         //封装createChannel方法，用于创建RSS唯一且必须的channel节点
35         protected function createChannel(){
36             $channel = $this->dom->createElement(‘channel‘);
37             $channel->appendChild($this->createEle(‘title‘,$this->title));
38             $channel->appendChild($this->createEle(‘link‘,$this->link));
39             $channel->appendChild($this->createEle(‘description‘,$this->description));
40             $this->channel = $channel;
41             $this->rss->appendChild($channel);
42         }
43  
44         //封装addItem方法，把所有的商品增加到RSS中去
45         //$list是商品列表，是二维数组，每一行都是一个商品
46         public function addItem($list){
47             foreach($list as $goods){
48                    $this->channel->appendChild($this->createItem($goods));
49             }
50         }
51  
52         //封装一个类用于造Item
53         protected function createItem($arr){
54             $item = $this->dom->createElement(‘item‘);
55             foreach($arr as $k=>$v){
56                 $item->appendChild($this->createEle($k,$v));
57             }
58             return $item;
59         }
60  
61         //快速创建节点  类似：<name>lover雪</name>
62         public function createEle($name,$value){
63             $ele = $this->dom->createElement($name);
64             $text = $this->dom->createTextNode($value);
65             $ele->appendChild($text);
66  
67             return $ele;
68         }   
69  
70     
71 }
72 //连接数据库
73 $conn = mysql_connect(‘localhost‘,‘root‘,‘‘);
74  
75  
76 mysql_query(‘set names utf8‘,$conn);
77 mysql_query(‘use boolshop1‘);
78 
79 
80  
81 $sql = "select goods_name as title,goods_brief as description from goods order by add_time asc limit 10";
82 $rs = mysql_query($sql,$conn);
83  
84  
85 $list = array();
86 while($row = mysql_fetch_assoc($rs)){
87     $list[] = $row;
88 }
89  
90 $feed1 = new feed_class();
91 $feed1->title = "布尔商城";
92 $feed1->link = "http://127.0.0.1/boolshop/";
93 $feed1->description = "这个一个好商城";
94 $feed1->itemlist = $list;
95  
96 $feed1->display();
97  
98 ?>