function getEmptyArr($s_time,$e_time,$type){

	$tmp = array();

	if($type=='day'){

		$s_time = strtotime($s_time);

		$e_time = strtotime($e_time);

		while($e_time>=$s_time){

			$tmp[] = date('Y-m-d',$e_time);

			$e_time -= 86400;

		}

	}else if('month'){

		$s_time = strtotime(date('Y-m',strtotime($s_time)));

		$e_time = strtotime(date('Y-m',strtotime($e_time)));

		while($e_time>=$s_time){

			$e_time_str = date('Y-m',$e_time);

			$tmp[] = $e_time_str;

			$e_time = strtotime("$e_time_str -1 month");

		}

	}

	return $tmp;

}