qml 网站开发,秦皇岛制作网站,网站制作技术培训学校,关于幼儿建设网站ppt模板下载本文主要向大家介绍了PHP语言#xff1a;实现微信红包拆分算法#xff0c;通过具体的内容向大家展示#xff0c;希望对大家学习php语言有所帮助。 修复最后一个红包输出未保留2位数 修复领取的红包金额低于最小红包限制* 红包分配算法** example* $coupon new Coupon(…本文主要向大家介绍了PHP语言实现微信红包拆分算法通过具体的内容向大家展示希望对大家学习php语言有所帮助。· 修复最后一个红包输出未保留2位数· 修复领取的红包金额低于最小红包限制* 红包分配算法** example* $coupon new Coupon(200, 5);* $res $coupon-handle();* print_r($res);** author Flc 2018-04-06 20:09:53* see http://flc.ren | http://flc.io | https://github.com/flc1125*/class Coupon{/*** 红包金额** var float*/protected $amount;/*** 红包个数** var int*/protected $num;/*** 领取的红包最小金额** var float*/protected $coupon_min;/*** 红包分配结果** var array*/protected $items [];/*** 初始化** param float $amount 红包金额(单位元)最多保留2位小数* param int $num 红包个数* param float $coupon_min 每个至少领取的红包金额*/public function __construct($amount, $num 1, $coupon_min 0.01){$this-amount $amount;$this-num $num;$this-coupon_min $coupon_min;}/*** 处理返回** return array*/public function handle(){// A. 验证if ($this-amount $validAmount $this-coupon_min * $this-num) {throw new Exception(红包总金额必须≥.$validAmount.元);}// B. 分配红包$this-apportion();return [items $this-items,];}/*** 分配红包*/protected function apportion(){$num $this-num; // 剩余可分配的红包个数$amount $this-amount; //剩余可领取的红包金额while ($num 1) {// 剩余一个的时候直接取剩余红包if ($num 1) {$coupon_amount $this-decimal_number($amount);} else {$avg_amount $this-decimal_number($amount / $num); // 剩余的红包的平均金额$coupon_amount $this-decimal_number($this-calcCouponAmount($avg_amount, $amount, $num));}$this-items[] $coupon_amount; // 追加分配$amount - $coupon_amount;--$num;}shuffle($this-items); //随机打乱}/*** 计算分配的红包金额** param float $avg_amount 每次计算的平均金额* param float $amount 剩余可领取金额* param int $num 剩余可领取的红包个数** return float*/protected function calcCouponAmount($avg_amount, $amount, $num){// 如果平均金额小于等于最低金额则直接返回最低金额if ($avg_amount $this-coupon_min) {return $this-coupon_min;}// 浮动计算$coupon_amount $this-decimal_number($avg_amount * (1 $this-apportionRandRatio()));// 如果低于最低金额或超过可领取的最大金额则重新获取if ($coupon_amount $this-coupon_min|| $coupon_amount $this-calcCouponAmountMax($amount, $num)) {return $this-calcCouponAmount($avg_amount, $amount, $num);}return $coupon_amount;}/*** 计算分配的红包金额-可领取的最大金额** param float $amount* param int $num*/protected function calcCouponAmountMax($amount, $num){return $this-coupon_min $amount - $num * $this-coupon_min;}/*** 红包金额浮动比例*/protected function apportionRandRatio(){// 60%机率获取剩余平均值的大幅度红包(可能正数、可能负数)if (rand(1, 100) 60) {return rand(-70, 70) / 100; // 上下幅度70%}return rand(-30, 30) / 100; // 其他情况上下浮动30%}/*** 格式化金额保留2位** param float $amount** return float*/protected function decimal_number($amount){return sprintf(%01.2f, round($amount, 2));}}// 例子$coupon new Coupon(200, 5, 30);$res $coupon-handle();print_r($res);以上就介绍了PHP的相关知识希望对PHP有兴趣的朋友有所帮助。了解更多内容请关注职坐标编程语言PHP频道
