dpztth71739 2015-11-03 14:59
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比$ DOMDocument-> getNodePath()更具体的路径;

I currently need a an XPath path to an element. The path must contain an attribute that uniquely identifies each element along the path (In this case, the name attribute).

$DOMDocument->getNodePath(); returns the path, but no attributes. The attributes are neccessary as the XML will be changing quite a bit.

I am currently writing a method to manually go through and check each element in the path for the name attribute, then inserting it into the string at the appropriate point. Is there an easier/faster/not as hackish way of doing this?

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  • dongyirong3564 2015-11-03 15:48
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    The xsh solution from @choroba can be translated to PHP source using DOMXpath::evaluate():

    $document = new DOMDocument();
    $document->loadXml($xml);
    $xpath = new DOMXpath($document);
    
    foreach ($xpath->evaluate('//address') as $address) {
      $path = '';  
      foreach ($xpath->evaluate('ancestor-or-self::*', $address) as $ancestor) {
        $path .= '/'.$ancestor->nodeName;
        if ($name = $ancestor->getAttribute('name')) {
          $path .= '[@name = "'.$name.'"]';
        }
      }
      var_dump($path);
    }
    

    ancestor-or-self::* is an Xpath expression that fetches all element nodes starting from the context node up to the document element.

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