code: static public function addChildAsCDATA($parent, $name, $value = NULL)
      {
          $new_child = $parent->addChild($name);
  
          if ($new_child !== NULL) {
              $node = dom_import_simplexml($new_child);
              $no = $node->ownerDocument;
              $node->appendChild($no->createCDATASection($value));
          }
  
          return $new_child;
      }
docs: Adds a child with $value inside CDATA
  @param unknown $name
  @param unknown $value