XML飼料獲取打印值

Question

這裏是我的飼料：

<entry> 
    <id>http://api.visitmix.com/OData.svc/Sessions(guid'816995df-b09a-447a-9391-019512f643a0')</id> 
    <title type="text">Building Web Applications with Microsoft SQL Azure</title> 
    <summary type="text">SQL Azure provides a highly available and scalable relational database engine in the cloud. In this demo-intensive and interactive session, learn how to quickly build web applications with SQL Azure Databases and familiar web technologies. We demonstrate how you can quickly provision, build and populate a new SQL Azure database directly from your web browser. Also, see firsthand several new enhancements we are adding to SQL Azure based on the feedback we&#x2019;ve received from the community since launching the service earlier this year.</summary> 
    <published>2010-01-25T00:00:00-05:00</published> 
    <updated>2010-03-05T01:07:05-05:00</updated> 
    <author> 
     <name /> 
    </author> 
    <link rel="edit" title="Session" href="Sessions(guid'816995df-b09a-447a-9391-019512f643a0')" /> 
    <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/Speakers" type="application/atom+xml;type=feed" title="Speakers" href="Sessions(guid'816995df-b09a-447a-9391-019512f643a0')/Speakers"> 
     <m:inline> 
     <feed> 
      <title type="text">Speakers</title> 
      <id>http://api.visitmix.com/OData.svc/Sessions(guid'816995df-b09a-447a-9391-019512f643a0')/Speakers</id> 
      <updated>2010-03-25T11:56:06Z</updated> 
      <link rel="self" title="Speakers" href="Sessions(guid'816995df-b09a-447a-9391-019512f643a0')/Speakers" /> 
      <entry> 
      <id>http://api.visitmix.com/OData.svc/Speakers(guid'3395ee85-d994-423c-a726-76b60a896d2a')</id> 
      <title type="text">David-Robinson</title> 
      <summary type="text"></summary> 
      <updated>2010-03-25T11:56:06Z</updated> 
      <author> 
       <name>David Robinson</name> 
      </author> 
      <link rel="edit-media" title="Speaker" href="Speakers(guid'3395ee85-d994-423c-a726-76b60a896d2a')/$value" /> 
      <link rel="edit" title="Speaker" href="Speakers(guid'3395ee85-d994-423c-a726-76b60a896d2a')" /> 
      <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/Sessions" type="application/atom+xml;type=feed" title="Sessions" href="Speakers(guid'3395ee85-d994-423c-a726-76b60a896d2a')/Sessions" /> 
      <category term="EventModel.Speaker" scheme="http://schemas.microsoft.com/ado/2007/08/dataservices/scheme" /> 
      <content type="image/jpeg" src="http://live.visitmix.com/Content/images/speakers/lrg/default.jpg" /> 
      <m:properties xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices"> 
       <d:SpeakerID m:type="Edm.Guid">3395ee85-d994-423c-a726-76b60a896d2a</d:SpeakerID> 
       <d:SpeakerFirstName>David</d:SpeakerFirstName> 
       <d:SpeakerLastName>Robinson</d:SpeakerLastName> 
       <d:LargeImage m:null="true"></d:LargeImage> 
       <d:SmallImage m:null="true"></d:SmallImage> 
       <d:Twitter m:null="true"></d:Twitter> 
      </m:properties> 
      </entry> 
     </feed> 
     </m:inline> 
    </link> 
    <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/Tags" type="application/atom+xml;type=feed" title="Tags" href="Sessions(guid'816995df-b09a-447a-9391-019512f643a0')/Tags" /> 
    <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/Files" type="application/atom+xml;type=feed" title="Files" href="Sessions(guid'816995df-b09a-447a-9391-019512f643a0')/Files" /> 
    <category term="EventModel.Session" scheme="http://schemas.microsoft.com/ado/2007/08/dataservices/scheme" /> 
    <content type="application/xml"> 
     <m:properties> 
     <d:SessionID m:type="Edm.Guid">816995df-b09a-447a-9391-019512f643a0</d:SessionID> 
     <d:Location>Breakers L</d:Location> 
     <d:Type>Seminar</d:Type> 
     <d:Code>SVC07</d:Code> 
     <d:StartTime m:type="Edm.DateTime">2010-03-17T12:00:00</d:StartTime> 
     <d:EndTime m:type="Edm.DateTime">2010-03-17T13:00:00</d:EndTime> 
     <d:Slug>SVC07</d:Slug> 
     <d:CreatedDate m:type="Edm.DateTime">2010-01-26T18:14:24.687</d:CreatedDate> 
     <d:SourceID m:type="Edm.Guid">cddca9b7-6830-4d06-af93-5fd87afb67b0</d:SourceID> 
     </m:properties> 
    </content> 
    </entry> 

我想打印：

• 課程名稱（構建Web應用程序與Microsoft SQL Azure的）
• 的作者（大衛羅賓遜）
• 位置（斷路器L）
• 並顯示揚聲器圖像（http://live.visitmix.com/Content/images/speakers/lrg/default.jpg）

我假設我可以使用filegetcontents，然後轉換爲simplexmlstring，但我不知道如何獲得我想要的更深的項目，如作者和圖像。

Answer 1

使用考慮了SimpleXML加載XML數據：

• 數組鍵的屬性
• 對象的值

像這樣的東西應該做的伎倆：

$string = <<<STR 
<entry> 
    ... 
    </entry> 
STR; 

$xml = @simplexml_load_string($string); 

echo (string)$xml->title . '<br />'; 
echo (string)$xml->link[1]->inline->feed->entry->author->name . '<br />'; 
echo (string)$xml->content->properties->Location . '<br />'; 
echo (string)$xml->link[1]->inline->feed->entry->content['src'] . '<br />'; 

我得到以下輸出：

Building Web Applications with Microsoft SQL Azure 
David Robinson 
Breakers L 
http://live.visitmix.com/Content/images/speakers/lrg/default.jpg 

使用var_dump($xml);可以幫助你找到你的數據是如何表示的，使用SimpleXML時 - 使事情變得更容易，當談到訪問它;-)

注：在這裏，我我使用@ operator來抑制我在使用simplexml_load_string時得到的警告;否則，我有很多這樣的警告：

Warning: simplexml_load_string() [function.simplexml-load-string]: 
    namespace error : Namespace prefix m on inline is not defined 

Warning: simplexml_load_string() [function.simplexml-load-string]: <m:inline> 

也許有什麼需要修復，在這裏？