xyzshop/helper/bonus/IMoneyCalc.php

<?php
/**
 * Created by PhpStorm.
 * User: stanley-king
 * Date: 2018/8/24
 * Time: 下午6:34
 */

namespace bonus;

interface IMoneyCalc
{
    public function add_bonuses($items);
    public function is_enough(&$rate, $amount);
    public function with_hold($rate, $amount);
    public function find_rate($amount);
    public function format();
    public function total();
}