Rename an XML node using PHP

Question

I\'m trying to figure out how to rename a node in XML using PHP?

I Have come this far:

$dom = new DOMDocument( \'1.0\' );
$dom->preserveWhiteSpace         


        

Answer 1

My solution, with extended test case:

// Changes the name of element $element to $newName.
function renameElement($element, $newName) {
  $newElement = $element->ownerDocument->createElement($newName);
  $parentElement = $element->parentNode;
  $parentElement->insertBefore($newElement, $element);

  $childNodes = $element->childNodes;
  while ($childNodes->length > 0) {
    $newElement->appendChild($childNodes->item(0));
  }

  $attributes = $element->attributes;
  while ($attributes->length > 0) {
    $attribute = $attributes->item(0);
    if (!is_null($attribute->namespaceURI)) {
      $newElement->setAttributeNS('http://www.w3.org/2000/xmlns/',
                                  'xmlns:'.$attribute->prefix,
                                  $attribute->namespaceURI);
    }
    $newElement->setAttributeNode($attribute);
  }

  $parentElement->removeChild($element);
}

function prettyPrint($d) {
  $d->formatOutput = true;
  echo '
'.htmlspecialchars($d->saveXML()).'
';
}

$d = new DOMDocument( '1.0' );
$d->loadXML('

  
    
      jmansa
      1
    
    1
  
');

$xpath = new DOMXPath($d);
$elements = $xpath->query('/library/data');
if ($elements->length == 1) {
  $element = $elements->item(0);
  renameElement($element, 'invites');
}

prettyPrint($d);

By the way, I added this solution as a comment to the PHP documentation for DOMElement.