I'm Donkey

function __get ($name){
	if ($name == "config") return;
	$var =&wxMagicGet($name);
	return $var;
}

function &wxMagicGet($name){
	if ($name == "db"){
		$CI = &get_instance();
		$CI->load->database();
		return $CI->$name;
	}
 
	if (!wxGetLoadingInfo($name, $type, $mpath)) return null;
 
	$CI = &get_instance();
	if ($type == 1){
		$CI->load->library($mpath.$name);
	} else if ($type == 2){
		$CI->load->model($mpath.$name);
	} else {
		return null;
	}
	return $CI->$name;
}
 
function wxGetLoadingInfo($name, &$type, &$mpath){
	static $pathmap = array();
	$filename = $name;
	if (strripos($name, ".php") === FALSE){
		$filename .= ".php";
	}
 
	return _find_where($filename, $type, $mpath);
}
 
function _find_where($name, &$type, &$mpath){
	//find in app model
	$type = 2;
	if (_find_where_path($name, APPPATH."models/", $mpath)) {
		$mpath = substr($mpath, strlen(APPPATH."models/"));
		return true;
	}
 
	//find in app library
	$type = 1;
	if (_find_where_path($name, APPPATH."libraries/", $mpath)) {
		$mpath = substr($mpath, strlen(APPPATH."libraries/"));
		return true;
	}
 
	//find in base library
	$type = 1;
	if (_find_where_path($name, BASEPATH."libraries/", $mpath)) {
		$mpath = substr($mpath, strlen(BASEPATH."libraries/"));
		return true;
	}
 
	return false;
}
 
function _find_where_path($name, $path, &$mpath){
	if (file_exists($path . $name)){
		$mpath = $path;
		return true;
	}
 
	if (file_exists($path . ucfirst($name1))){
		$mpath = $path;
		return true;
	}
 
	if (file_exists($path . strtoupper($name))){
		$mpath = $path;
		return true;
	}
 
	//更深入的查找所有子目录
	$found = false;
	if ($handle = @opendir($path)) {
		while (false !== ($file = readdir($handle))) {
			if ($file != "." && $file != "..") {
				$child = $path.$file;
				if(is_dir($child)) {
					if (_find_where_path($name, $child . "/", $mpath)){
						$found = true;
						break;
					}
				}
			}
		}
		closedir($handle);
	}
	return $found;
}