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>
如何使用 php 获取标题、博客链接<link rel="alternate" href="http://www.website.com/detail/2688327:BlogPost:1569917"/>、作者详细信息（如名称和 uri（配置文件链接））以及摘要的数组？
查看 simpleXML， XPath
http://php.net/manual/en/book.simplexml.php
$file = 'url or file name';
$xml = simplexml_load_file('$file');
$list= $xml->xpath("/entry"); // root/entry ...
print $list[0]->id;
#var_dump($list);