如何使用xpath php获取元素xml

1 回答

• 1

  使用$node->textContent获取节点的文本值（及其后代，如果有的话） .

  ---

  回应您的第一条评论：

  你没有使用 $node->textContent . 试试这个：

  $doc = new DOMDocument();
  $doc->loadXML(file_get_contents("test.xml"));
  $xpath = new DOMXpath($doc);
  $nodes = $xpath->query('//*');
  $names = array();
  $values = array(); // created a separate array for the values
  foreach ($nodes as $node)
  {
    $names[]  = $node->nodeName;
    $values[] = $node->textContent; // push to $values array
  }
  echo join(PHP_EOL, ($values));
  

  ---

  但是，如果您只想在文本值成为元素的直接子元素时仍然想要收集所有节点名称，那么您可以执行以下操作：

  foreach ($nodes as $node)
  {
    $names[] = $node->nodeName;
    // check that this node only contains one text node
    if( $node->childNodes->length == 1 && $node->firstChild instanceof DOMText ) {
      $values[] = $node->textContent;
    }
  }
  echo join(PHP_EOL, ($values));
  

  如果您只关心直接包含文本值的节点，您可以执行以下操作：

  // this XPath query only selects those nodes that directly contain non-whitespace text
  $nodes = $xpath->query('//*[./text()[normalize-space()]]');
  $values = array();
  foreach ($nodes as $node)
  {
    // add nodeName as key
    // (only works reliable of there's never a duplicate nodeName in your XML)
    // and add textContent as value
    $values[ $node->nodeName ] = trim( $node->textContent );
  }
  
  var_dump( $values );
  

  回复于 2024-04-27T23:25:44+08:00