Php web抓取从xml获取内容

如何使用php从xml页面获取内容。 内容如下:

 <entry>
   <title>News</title>
     <link rel="alternate" href="http://www.website.com/detail/2688327:BlogPost:1569917"/>
     <id>tag:www.website.com,2012-04-25:2688327:BlogPost:1569917</id>
     <updated>2012-04-25T08:30:00.000Z</updated>
     <author>
     <name>Username</name>
     <uri>http://www.website.com/profile/username</uri>
     </author>
      <summary type="html">
      Hi this is the latest news
      </summary>
</entry>

 <entry>
   <title>News2</title>
     <link rel="alternate" href="http://www.website.com/detail/2688327:BlogPost:1569917"/>
     <id>tag:www.website.com,2012-04-25:2688327:BlogPost:1569917</id>
     <updated>2012-04-25T08:30:00.000Z</updated>
     <author>
     <name>Username2</name>
     <uri>http://www.website.com/profile/username</uri>
     </author>
      <summary type="html">
      Hi this is the latest news
      </summary>
</entry>

 <entry>
   <title>News3</title>
     <link rel="alternate" href="http://www.website.com/detail/2688327:BlogPost:1569917"/>
     <id>tag:www.website.com,2012-04-25:2688327:BlogPost:1569917</id>
     <updated>2012-04-25T08:30:00.000Z</updated>
     <author>
     <name>Username3</name>
     <uri>http://www.website.com/profile/username</uri>
     </author>
      <summary type="html">
      Hi this is the latest news
      </summary>
</entry>

 <entry>
   <title>News4</title>
     <link rel="alternate" href="http://www.website.com/detail/2688327:BlogPost:1569917"/>
     <id>tag:www.website.com,2012-04-25:2688327:BlogPost:1569917</id>
     <updated>2012-04-25T08:30:00.000Z</updated>
     <author>
     <name>Username4</name>
     <uri>http://www.website.com/profile/username</uri>
     </author>
      <summary type="html">
      Hi this is the latest news
      </summary>
</entry>

新闻
标签：www.website.com，2012-04-25:2688327:BlogPost:1569917
2012-04-25T08:30:00.000Z
用户名
http://www.website.com/profile/username
嗨，这是最新消息
新闻2
标签：www.website.com，2012-04-25:2688327:BlogPost:1569917
2012-04-25T08:30:00.000Z
用户名2
http://www.website.com/profile/username
嗨，这是最新消息
新闻3
标签：www.website.com，2012-04-25:2688327:BlogPost:1569917
2012-04-25T08:30:00.000Z
用户名3
http://www.website.com/profile/username
嗨，这是最新消息
新闻4
标签：www.website.com，2012-04-25:2688327:BlogPost:1569917
2012-04-25T08:30:00.000Z
用户名4
http://www.website.com/profile/username
嗨，这是最新消息

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如何使用php获取标题数组、博客链接、作者详细信息（如姓名和uri（配置文件链接）以及摘要？

请查看simplexml、xpath

---

检查simplexml，xpath

   $file = 'url or file name';
    $xml = simplexml_load_file('$file');
    $list= $xml->xpath("/entry"); // root/entry ...
    print $list[0]->id; 
    #var_dump($list);