public function set($data, $value = null)
	{
		if (is_array($data))
		{
			foreach ($data as $key => &$value)
			{
				if (is_int($key))
				{
					$_SESSION[$value] = null;
				}
				else
				{
					$_SESSION[$key] = $value;
				}
			}

			return;
		}

		$_SESSION[$data] = $value;
	}