Robert

public function __call($var,$args)
{
    if($var == "uniq_id" || $var == "loaded" || in_array($var,$this->open_properties))
    {
        if(sizeof($args) > 0)
        {
            $arg = $args[0];
            $this->$var = $arg;
        }
        else
        {
            if(isset($this->$var))
            {
                return $this->$var;
            }
            else
            {
                return null;
            }
        }
    }
    else
    {
        throw new Exception("Invalid var call [$var]!");
    }
}