使用simpleXML解析嵌套命名空间的XML？

Question

下面是XML文件的内容：

<?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 

这里是我开始了代码，但我不知道它是否是我下面还是有一些更好的方式来实现这一目标的正确的方法？

// 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; 

如何通过元素循环以获取<w:t>的内容？

Answer 1

Xpath的将可能是最简单的：

// 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"; 
}