class xmlCreator {
var $instance;
var $curPath = array();
var $xmlNode;
var $rootNode;

function __constructor ($xmlContent = null) {
	$this->__instance($xmlContent);
}

function __instance($content=null, $rootElement=null) {
	if ($content == null) {
		$content="<".$rootElement."></".$rootElement.">";
		$this->rootNode = $rootElement;
	}
	$this->instance = new SimpleXMLElement($content);
}

function __set($element,$value) {
	$this->__call($element, $args)->value($value);
}

function __get($element) {
	if (isset($this->xmlNode[$element])) {
		if ($element == $this->rootNode) {
			$this->curPath = array();
		} else {
			$this->curPath[] = $element;
		}
	}
	return $this;
}

function __call($element, $args) {
	if (is_null($this->instance)) {
		$this->__instance(null, $element);
	}
	$count = count($this->xmlNode);
	$this->xmlNode[$count]['name'] = $element;
	$this->xmlNode[$count]['path'] = $this->curPath;

	if (isset($args[0])) {
		if (isset($args[1])) { $this->xmlNode[$count]['callback'] = $args[1]; }
		$this->xmlNode[$count]['param'] = $args[0];
	}

	return $this;
}

function _value($value) {
	$this->xmlNode[end($this->curPath)]['value'] = $value;
	return $this;
}

function __toString() {
	$callback_node = array();
	$n = 0;
	foreach ($this->xmlNode as $num=>$params) {
		if ($params['name'] != $this->rootNode) {
			$path = $this->instance;
			if (count($params['path']) > 0) {
				$path = $path->{implode("->", $params['path'])};
			}

			if (isset($params['value'])) {
				$element = $path->addChild($params['name'], $params['value']);
			} else {
				$element = $path->addChild($params['name']);
			}
		} else {
			$element = $this->instance;
		}
		if (isset($params['param'])) {
			foreach ($params['param'] as $nameParam=>$valueParam) {
				if (!isset($params['callback']) || (isset($params['callback']) && !in_array($nameParam, $params['callback']))) {
					$element->addAttribute($nameParam, $valueParam);
				} else {
					$n++;
					$callback_node[$n]['element'] = $element;
					$callback_node[$n]['param'] = $nameParam;
					$callback_node[$n]['func'] = $valueParam;
				}
			}
		}
	}
	foreach ($callback_node as $callback) {
		$callback['element']->addAttribute($callback['param'], $callback['func']($callback['element']->packed->asXML()));
	}

	return $this->instance->asXml();
}

}