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php 红包算法，强大

发布时间:2018年03月05日 评论数：抢沙发 阅读数：4154

老规矩 直接上代码

function ff(&$shen_price, &$shen_number, $min = 0) {
	if ($shen_number == 1) {
		return $shen_price;
	}

	return $shen_price == 0 || $shen_price / $shen_number < 1 ? 0 : mt_rand(1, $shen_price / $shen_number == 1 ? 1 : $shen_price / $shen_number * 2);
}

$_price = 1000 * 100;
$num = 10;
$min = 99.01 * 100;
$price = $_price - $num * $min;
$_num = $num;
$all_s = 0;
echo '共' . ($_price / 100) . '元，基本' . ($num * $min / 100) . '元' . PHP_EOL;

for ($i = 0; $i < $_num; $i++) {
	$c = ff($price, $num);

	$all_s += $c;
	$price -= $c;
	$num--;

	echo "剩余" . (($num * $min + $price) / 100) . "元，剩余{$num}个，此次红包";
	echo (($min + $c) / 100) . '元' . PHP_EOL;
}

echo '共发出' . (($min * $_num + $all_s) / 100) . '元';