About the algorithm for splitting WeChat red envelope amount using PHP

This article mainly introduces the algorithm example of PHP to implement WeChat red envelope amount splitting trial. The content is quite good. I will share it with you now and give it as a reference.

This article introduces an example of the algorithm for splitting the amount of WeChat red envelopes in PHP and shares it with everyone. If you are interested, you can take a look:

bonus_num = 10;
    $this->bonus_money = 200;
    $this->money_single_max = 60;
  }

  private function randomFloat($min = 0, $max = 1) {
    $mt_rand = mt_rand();
    $mt_getrandmax = mt_getrandmax();
    echo 'mt_rand=' . $mt_rand . ', mt_getrandmax=' . $mt_getrandmax . '
';
    return $min + $mt_rand / $mt_getrandmax * ($max - $min);
  }
  //计算
  public function compute()
  {
    $this->bonus = array();
    $bonus_money_temp = $this->bonus_money;
    $money_single_max = $this->money_single_max;
    $i = 1;
    while($i < $this->bonus_num)
    {
      if ($money_single_max > $bonus_money_temp)
      {
        $money_single_max = floatval(sprintf("%01.2f", $bonus_money_temp / 2));//剩余金额不够分时,把剩余金额的一半作为备用金
      }
      $bonus_money_rad = $this->randomFloat(0.01, $money_single_max);//一个红包随机金额 最小的1分钱
      $bonus_money_rad = floatval(sprintf("%01.2f", $bonus_money_rad));
      $bonus_money_temp = $bonus_money_temp - $bonus_money_rad ;//待分配的总剩余金额
      $bonus_money_temp = floatval(sprintf("%01.2f", $bonus_money_temp));
      $this->bonus[] = $bonus_money_rad;
      //echo $bonus_money_rad . ',' . $bonus_money_temp . '
';
      $i++;
    }
    $this->bonus[] = $bonus_money_temp;//分配剩余金额给最后一个红包
  }
  //打印
  public function output(){
    $total = 0;
    foreach($this->bonus as $k => $v)
    {
      echo '红包' . ($k+1) . '=' . $v . '
';
      $total += $v;
    }
    echo '红包总金额:'.$total;
  }
}

$CBonus = new CBonus();
$CBonus->compute();
$CBonus->output();
?>

Demo results:

红包1=12.36
红包2=24.37
红包3=42.71
红包4=36.92
红包5 =25.84
Red envelope 6=23.17
Red envelope 7=15.92
Red envelope 8=1.35
Red envelope 9=7.75
Red envelope 10=9.61
Total amount of red envelope: 200

红包1=24.59
红包2=17.66
红包3=29.67
红包4=32.34
红包5=12.67
红包6=37.15
红包7=17.41
Red envelope 8=15.23
Red envelope 9=6.13
Red envelope 10=7.15
Total red envelope amount: 200

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