使用simpleXML解析嵌套命名空間的XML？

Question

下面是XML文件的內容：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<w:document xmlns:ve="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:wp="http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing" xmlns:w10="urn:schemas-microsoft-com:office:word" xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main" xmlns:wne="http://schemas.microsoft.com/office/word/2006/wordml"> 
    <w:body> 
     <w:p w:rsidR="00546015" w:rsidRDefault="00546015"> 
      <w:r> 
       <w:t xml:space="preserve">Hello </w:t> 
      </w:r> 
      <w:proofErr w:type="spellStart"/> 
      <w:r> 
       <w:t>Doctor</w:t> 
      </w:r> 
      <w:proofErr w:type="spellEnd"/> 
      <w:r> 
       <w:t>,</w:t> 
      </w:r> 
     </w:p> 
     <w:p w:rsidR="00546015" w:rsidRDefault="00546015" w:rsidP="00B72192"> 
      <w:r> 
       <w:t xml:space="preserve">I hope you are doing well. Thanks for taking the time to speak with us on Skype yesterday. It is always a pleasure talking with you. </w:t> 
      </w:r> 
     </w:p> 
     <w:p w:rsidR="00546015" w:rsidRDefault="00546015"/> 
     . 
     . 
     . 
     . 
     . 
     and this list goes on 

這裏是我開始了代碼，但我不知道它是否是我下面還是有一些更好的方式來實現這一目標的正確的方法？

// load the xml into the object 
$xml = simplexml_load_file('word/document.xml'); 

//Use that namespace 
$namespaces = $xml->getNameSpaces(true); 

//Now we don't have the URL hard-coded 
$w_doc = $xml->children($namespaces['w']); 
$document = $w_doc->document; 

$w_body = $document->document->children($namespaces['w']); 

$body = $w_body->body; 

如何通過元素循環以獲取<w:t>的內容？

Answer 1

Xpath的將可能是最簡單的：

// load the xml into the object 
$xml = simplexml_load_file('word/document.xml'); 

//Use that namespace 
$namespaces = $xml->getNameSpaces(true); 

$xml->registerXPathNamespace('w', $namespaces['w']); 

$nodes = $xml->xpath('/w:document/w:body//w:t'); 

foreach($nodes as $node) { 
    echo (string) $node . "\n\n"; 
}