Gc\Core\Object::__toXml PHP Method

    protected function __toXml(array $array = array(), $rootName = 'item', $addOpenTag = false, $addCdata = true)
    {
        $xml = '';
        if ($addOpenTag) {
            $xml .= '<?xml version="1.0" encoding="UTF-8"?>' . PHP_EOL;
        }
        if (empty($array)) {
            $array = $this->toArray();
        }
        if (!empty($rootName) and !is_numeric($rootName)) {
            $xml .= '<' . $rootName;
            if (isset($array['id'])) {
                $xml .= ' id="' . $array['id'] . '"';
                unset($array['id']);
            }
            $xml .= '>' . PHP_EOL;
        }
        foreach ($array as $fieldName => $fieldValue) {
            if (is_array($fieldValue)) {
                if (!empty($fieldValue)) {
                    $xml .= $this->__toXml($fieldValue, $fieldName);
                    continue;
                }
                $fieldValue = '';
            } elseif (is_object($fieldValue) and method_exists($fieldValue, 'toXml')) {
                $xml .= $fieldValue->toXml(array(), $fieldValue->name);
                continue;
            }
            if ($addCdata === true) {
                $fieldValue = '<![CDATA[' . $fieldValue . ']]>';
                $xml .= '<' . $fieldName . '>' . $fieldValue . '</' . $fieldName . '>' . PHP_EOL;
            } else {
                $fieldValue = htmlentities($fieldValue);
                $xml .= '<' . $fieldName . '>' . $fieldValue . '</' . $fieldName . '>' . PHP_EOL;
            }
        }
        if (!empty($rootName) and !is_numeric($rootName)) {
            $xml .= '</' . $rootName . '>' . PHP_EOL;
        }
        return $xml;
    }