tag_open example

                        if ($xml->namespaceURI !== '')
                        {
                            $attrName = $xml->namespaceURI . $this->separator . $xml->localName;
                        }
                        else
                        {
                            $attrName = $xml->localName;
                        }
                        $attributes[$attrName] = $xml->value;
                    }
                    $this->tag_open(null, $tagName, $attributes);
                    if ($empty)
                    {
                        $this->tag_close(null, $tagName);
                    }
                    break;
                case constant('XMLReader::TEXT'):

                case constant('XMLReader::CDATA'):
                    $this->cdata(null, $xml->value);
                    break;
            }
        }