$element = $xml->addChild($key, xmlify($value), $namespace);
} elseif (is_array($value)) {
$element = $xml->addChild($key, null, $namespace);
$element = $xml->addChild($key, xmlify($value), $namespace);
} elseif (is_array($value)) {
$element = $xml->addChild($key, null, $namespace);