131 lines
4.3 KiB
PHP
131 lines
4.3 KiB
PHP
<?php
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namespace Yunshop\Redpack\model;
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use Yunshop\Redpack\model\withdraw\Balance;
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use Yunshop\Redpack\model\withdraw\Love;
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use Yunshop\Redpack\model\withdraw\Point;
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use Yunshop\Redpack\model\withdraw\Wechat;
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class Redpack
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{
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public function send($uid, $activityModel, $amount)
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{
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$rankingReward = [];
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if ($activityModel->withdraw_code == 1) {
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$rankingReward[] = [
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'type' => 'wechat_red_racket',
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'value' => $amount
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];
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$model = (new Wechat($uid, $amount, $activityModel));
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}
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if ($activityModel->withdraw_code == 2) {
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$rankingReward[] = [
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'type' => 'balance',
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'value' => $amount
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];
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$model = (new Balance($uid, $amount));
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}
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if ($activityModel->withdraw_code == 3) {
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$model = (new Point($uid, $amount));
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}
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if ($activityModel->withdraw_code == 4) {
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$model = (new Love($uid, $amount));
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}
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$res = $model->sendAmount();
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/**活动排行榜**/
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if (app('plugins')->isEnabled('activity-ranking')) {
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//监听额度变化
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event(new \Yunshop\ActivityRanking\event\QuotaChangeEvent(
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\YunShop::app()->uniacid,
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$uid,
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$rankingReward,
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5, '口令红包奖励扣除')
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);
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}
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return $res;
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}
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public function getBonus($total, $num, $max, $min)
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{
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$re=[];
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while ($num>0){
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$vag=round($total/$num,2);
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$num--;
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$tmp_max=min($max,round($total-$num*$min,2));//保证剩下红包金额不小于范围中的最小值
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$tmp_min=max($min,round($total-$num*$max,2));//保证剩下红包金额不大于范围中的最大值
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$vag_diff=min($tmp_max-$vag,$vag-$tmp_min);//这是波动幅度
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$end_max=$vag+$vag_diff;
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$end_min=$vag-$vag_diff;
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$money=mt_rand($end_min*100,$end_max*100)/100;
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$total-=$money;
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$re[]=$money;
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}
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return $re;
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}
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public function getBonus1($bonus_total, $bonus_count, $bonus_max, $bonus_min)
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{
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$result = array();
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$average = $bonus_total / $bonus_count;
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for ($i = 0; $i < $bonus_count; $i++) {
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//因为小红包的数量通常是要比大红包的数量要多的，因为这里的概率要调换过来。
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//当随机数>平均值，则产生小红包
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//当随机数<平均值，则产生大红包
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if (rand($bonus_min, $bonus_max) > $average) {
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// 在平均线上减钱
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$temp = $bonus_min + $this->xRandom($bonus_min, $average);
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$result[$i] = $temp;
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$bonus_total -= $temp;
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} else {
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// 在平均线上加钱
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$temp = $bonus_max - $this->xRandom($average, $bonus_max);
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$result[$i] = $temp;
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$bonus_total -= $temp;
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}
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}
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// 如果还有余钱，则尝试加到小红包里，如果加不进去，则尝试下一个。
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while ($bonus_total > 0) {
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for ($i = 0; $i < $bonus_count; $i++) {
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if ($bonus_total > 0 && $result[$i] < $bonus_max) {
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$result[$i]++;
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$bonus_total--;
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}
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}
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}
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// 如果钱是负数了，还得从已生成的小红包中抽取回来
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while ($bonus_total < 0) {
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for ($i = 0; $i < $bonus_count; $i++) {
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if ($bonus_total < 0 && $result[$i] > $bonus_min) {
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$result[$i]--;
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$bonus_total++;
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}
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}
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}
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return $result;
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}
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/**
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* 求一个数的平方
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* @param $n
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*/
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private function sqr($n){
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return $n*$n;
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}
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/**
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* 生产min和max之间的随机数，但是概率不是平均的，从min到max方向概率逐渐加大。
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* 先平方，然后产生一个平方值范围内的随机数，再开方，这样就产生了一种“膨胀”再“收缩”的效果。
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*/
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private function xRandom($bonus_min,$bonus_max){
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$sqr = intval($this->sqr($bonus_max-$bonus_min));
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$rand_num = rand(0, ($sqr-1));
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return intval(sqrt($rand_num));
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}
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} |