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851天前<?php |
$total=20;//红包总金额 |
$num=10;// 分成10个红包，支持10人随机领取 |
$min=0.01;//每个人最少能收到0.01元 |
$redpack = new redpack($total,$num,$min); |
$jieguo = $redpack->getPack(); |
foreach($jieguo as $key=>$val){ |
$n = $key+1; |
echo '第'.$n.'个红包：'.$val['money'].' 元，余额：'.$val['balance'].' 元<br>'; |
} |
|
class redpack{ |
//总金额 |
private $total=0; |
//红包数量 |
private $num=0; |
//最小红包金额 |
private $min=0.01; |
|
public function __construct($total,$num,$min) |
{ |
$this->total = $total; |
$this->num = $num; |
$this->min = $min; |
} |
//红包结果 |
public function getPack() |
{ |
$total = $this->total; |
$num = $this->num; |
$min = $this->min; |
for ($i=1;$i<$num;$i++) |
{ |
$safe_total=($total-($num-$i)*$min)/($num-$i);//随机安全上限 |
$money=mt_rand($min*100,$safe_total*100)/100; |
$total=$total-$money; |
//红包数据 |
$readPack[]= [ |
'money'=>$money, |
'balance'=>$total, |
]; |
} |
//最后一个红包，不用随机 |
$readPack[] = [ |
'money'=>$money, |
'balance'=>0, |
]; |
//返回结果 |
return $readPack; |
} |
|
} |
