金额钱 - PHP 工具类

金额钱 - PHP 工具类

<?php
/**
 * Created by PhpStorm.
 * User: peeke
 * Date: 2020/4/10
 * Time: 13:41
 */

namespace App\common\Helpers\tools;


class PriceHelper
{
    // 税备金比例
    const TAX_RATE = 5;
    // 税备金金额
    const RESERVR_AMOUNT = 100;

    const RMB_YUN = "YUN"; //元

    const RMB_JIAO = "JIAO"; //角

    const RMB_FEN = "FEN"; //分

    const RMB_LI = "LI"; //里，小数点后3位

    const RMB_WEI = "WEI"; //微，小数点后4位

    /**
     * 价格存整数，1元存成100
     */
    public static function get_db_price($price = 0)
    {
        if (empty($price)) {
            $price = 0;
        }

        $newPrice = (string)($price * 100);
        return intval($newPrice);
    }

    /**
     * 价格存整数，1元存成100
     */
    public static function get_real_price($price = 0)
    {
        $price = round($price / 100, 2);
        //最多展示3位小数，有小数的展示出来，没有的不展示
        $price = number_format($price, 2, '.', '');
        $price = floatval($price); //去掉多余的0，返回浮点型
        return $price;

    }

    /**
     * 格式化价格数据
     *
     * @param        $price    单位元
     * @param int    $decimals 保留几位小数
     * @param string $format   YUN|JIAO|FEN|LI|WEI
     * @return float|string
     */
    public static function get_price($price, int $decimals = 2, string $format = self::RMB_YUN)
    {
        switch ($format) {
            case self::RMB_YUN:
                $price = $price * 1.0;
                break;
            case self::RMB_JIAO:
                $price = $price / 10.0;
                break;
            case self::RMB_FEN:
                $price = $price / 100.0;
                break;
            case self::RMB_LI:
                $price = $price / 1000.0;
                break;
            case self::RMB_WEI:
                $price = $price / 10000.0;
                break;
        }
        $price = floatval($price); //去掉多余的0，返回浮点型
        $price = number_format($price, $decimals, '.', ',');
        return $price;
    }

    /**
     * 获取对应的税备金
     *
     * @param $price     金额 单位：分
     * @param $preAmount 预存金额 单位：分
     * @param $taxRate   税备金计算比例
     * @return false|float|int|string
     */
    public static function getTaxReserveAmount($price, $preAmount = 100, $taxRate = 5)
    {
        //$preAmount = self::get_db_price($preAmount);
        $taxReserveAmount = $price * ($taxRate / 100) + $preAmount;
        $taxReserveAmount = self::get_real_price($taxReserveAmount);
        $taxReserveAmount = sprintf("%.2f", $taxReserveAmount);

        return $taxReserveAmount;

    }

    /**
     * 计算税备金
     *
     * @param $price   订单价格
     * @param $taxRate 税备金计算比例
     * @return false|float|int|string
     */
    public static function get_tmp_price($price, $taxRate)
    {
        $tmp_tax = bcmul($price, $taxRate / 100, 2) + 100;
        return self::get_price($tmp_tax);
    }

    /**
     *数字金额转换成中文大写金额
     *
     * @param numeric $num 要转换的小写数字或小写字符串
     * @return $numStr
     **/
    public static function numToRmb($num, $isNeedZheng = true)
    {
        $oldNum = $num;
        if (!is_numeric($num)) {
            return $oldNum;
        }

        $c1 = "零壹贰叁肆伍陆柒捌玖";
        $c2 = "分角元拾佰仟万拾佰仟亿";
        //精确到分后面就不要了，所以只留两个小数位
        $num = round($num, 2);
        //将数字转化为整数
        $num = $num * 100;
        if ((strlen($num) > 10) || ($num < 0.01)) {
            return $oldNum;
        }
        $i = 0;
        $c = "";
        while (1) {
            if ($i == 0) {
                //获取最后一位数字
                $n = substr($num, strlen($num) - 1, 1);
            } else {
                $n = $num % 10;
            }
            //每次将最后一位数字转化为中文
            $p1 = substr($c1, 3 * $n, 3);
            $p2 = substr($c2, 3 * $i, 3);
            if ($n != '0' || ($n == '0' && ($p2 == '亿' || $p2 == '万' || $p2 == '元'))) {
                $c = $p1 . $p2 . $c;
            } else {
                $c = $p1 . $c;
            }
            $i = $i + 1;
            //去掉数字最后一位了
            $num = $num / 10;
            $num = (int)$num;
            //结束循环
            if ($num == 0) {
                break;
            }
        }
        $j    = 0;
        $slen = strlen($c);
        while ($j < $slen) {
            //utf8一个汉字相当3个字符
            $m = substr($c, $j, 6);
            //处理数字中很多0的情况,每次循环去掉一个汉字“零”
            if ($m == '零元' || $m == '零万' || $m == '零亿' || $m == '零零') {
                $left  = substr($c, 0, $j);
                $right = substr($c, $j + 3);
                $c     = $left . $right;
                $j     = $j - 3;
                $slen  = $slen - 3;
            }
            $j = $j + 3;
        }
        //这个是为了去掉类似23.0中最后一个“零”字
        if (substr($c, strlen($c) - 3, 3) == '零') {
            $c = substr($c, 0, strlen($c) - 3);
        }

        //将处理的汉字加上“整”
        $zheng = '';
        if ($isNeedZheng) {
            $zheng = '整';
        }
        if (empty($c)) {
            $numStr = "零元" . $zheng;
        } else {
            $numStr = $c . $zheng;
        }
        return $numStr;
    }

}