<?
class SimpleXMLElementExtended extends SimpleXMLElement
{
  /**
   * Add value as CData to a given XML node
   *
   * @param SimpleXMLElement $node SimpleXMLElement object representing the child XML node
   * @param string $value A text to add as CData
   * @return void
   */
  private function addCDataToNode(SimpleXMLElement $node, $value = '')
  {
    if ($domElement = dom_import_simplexml($node))
    {
      $domOwner = $domElement->ownerDocument;
      $domElement->appendChild($domOwner->createCDATASection("{$value}"));
    }
  }

  /**
   * Add child node with value as CData
   *
   * @param string $name The child XML node name to add
   * @param string $value A text to add as CData
   * @return SimpleXMLElement
   */
  public function addChildWithCData($name = '', $value = '')
  {
    $newChild = parent::addChild($name);
    if ($value) $this->addCDataToNode($newChild, "{$value}");
    return $newChild;
  }


  /**
   * Add value as CData to the current XML node
   *
   * @param string $value A text to add as CData
   * @return void
   */
  public function addCData($value = '')
  {
    $this->addCDataToNode($this, "{$value}");
  }
}