金額錢 - PHP 工具類

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

namespace App\common\Helpers\tools;


class PriceHelper
{
    // 稅備金比例
    const TAX_RATE = 5;
    // 稅備金金額
    const RESERVR_AMOUNT = 100;

    const RMB_YUN = "YUN"; //元

    const RMB_JIAO = "JIAO"; //角

    const RMB_FEN = "FEN"; //分

    const RMB_LI = "LI"; //裡，小數點後3位

    const RMB_WEI = "WEI"; //微，小數點後4位

    /**
     * 價格存整數，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);
    }

    /**
     * 價格存整數，1元存成100
     */
    public static function get_real_price($price = 0)
    {
        $price = round($price / 100, 2);
        //最多展示3位小數，有小數的展示出來，沒有的不展示
        $price = number_format($price, 2, '.', '');
        $price = floatval($price); //去掉多餘的0，傳回浮點型
        return $price;

    }

    /**
     * 格式化價格資料
     *
     * @param        $price    機關元
     * @param int    $decimals 保留幾位小數
     * @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); //去掉多餘的0，傳回浮點型
        $price = number_format($price, $decimals, '.', ',');
        return $price;
    }

    /**
     * 擷取對應的稅備金
     *
     * @param $price     金額 機關：分
     * @param $preAmount 預存金額 機關：分
     * @param $taxRate   稅備金計算比例
     * @return false|float|int|string
     */
    public static function getTaxReserveAmount($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;

    }

    /**
     * 計算稅備金
     *
     * @param $price   訂單價格
     * @param $taxRate 稅備金計算比例
     * @return false|float|int|string
     */
    public static function get_tmp_price($price, $taxRate)
    {
        $tmp_tax = bcmul($price, $taxRate / 100, 2) + 100;
        return self::get_price($tmp_tax);
    }

    /**
     *數字金額轉換成中文大寫金額
     *
     * @param numeric $num 要轉換的小寫數字或小寫字元串
     * @return $numStr
     **/
    public static function numToRmb($num, $isNeedZheng = true)
    {
        $oldNum = $num;
        if (!is_numeric($num)) {
            return $oldNum;
        }

        $c1 = "零壹貳叁肆伍陸柒捌玖";
        $c2 = "分角元拾佰仟萬拾佰仟億";
        //精确到分後面就不要了，是以隻留兩個小數位
        $num = round($num, 2);
        //将數字轉化為整數
        $num = $num * 100;
        if ((strlen($num) > 10) || ($num < 0.01)) {
            return $oldNum;
        }
        $i = 0;
        $c = "";
        while (1) {
            if ($i == 0) {
                //擷取最後一位數字
                $n = substr($num, strlen($num) - 1, 1);
            } else {
                $n = $num % 10;
            }
            //每次将最後一位數字轉化為中文
            $p1 = substr($c1, 3 * $n, 3);
            $p2 = substr($c2, 3 * $i, 3);
            if ($n != '0' || ($n == '0' && ($p2 == '億' || $p2 == '萬' || $p2 == '元'))) {
                $c = $p1 . $p2 . $c;
            } else {
                $c = $p1 . $c;
            }
            $i = $i + 1;
            //去掉數字最後一位了
            $num = $num / 10;
            $num = (int)$num;
            //結束循環
            if ($num == 0) {
                break;
            }
        }
        $j    = 0;
        $slen = strlen($c);
        while ($j < $slen) {
            //utf8一個漢字相當3個字元
            $m = substr($c, $j, 6);
            //處理數字中很多0的情況,每次循環去掉一個漢字“零”
            if ($m == '零元' || $m == '零萬' || $m == '零億' || $m == '零零') {
                $left  = substr($c, 0, $j);
                $right = substr($c, $j + 3);
                $c     = $left . $right;
                $j     = $j - 3;
                $slen  = $slen - 3;
            }
            $j = $j + 3;
        }
        //這個是為了去掉類似23.0中最後一個“零”字
        if (substr($c, strlen($c) - 3, 3) == '零') {
            $c = substr($c, 0, strlen($c) - 3);
        }

        //将處理的漢字加上“整”
        $zheng = '';
        if ($isNeedZheng) {
            $zheng = '整';
        }
        if (empty($c)) {
            $numStr = "零元" . $zheng;
        } else {
            $numStr = $c . $zheng;
        }
        return $numStr;
    }

}