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The file is as shown:
 <region id='Europe'>
  <country id='de' name='Germany' pop='82000000'/>
  <country id='fr' name='France'  pop='60000000'/>
 <region id='Asia'>
  <country id='cn' name='China' pop='1300000000'/>

You load the XML file using the DOMDocument class. You then obtain a list of all country nodes. The first node represents Germany, it must be cast as an element before you can access the pop attribute.

The value returned should be 82 million.

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