アラビア数字を中国語に変換

長い間書いていませんでしたが、最近たまたま財務金額を数値から中国語のコンテンツに変換する関数を作成して記録しました:

class MoneyConstConfig
{

    /**
     * 金额数字中文映射
     */
    public static $NUM_CH_MAP = array(
        0 => '零',
        1 => '壹',
        2 => '贰',
        3 => '叁',
        4 => '肆',
        5 => '伍',
        6 => '陆',
        7 => '柒',
        8 => '捌',
        9 => '玖',
    );


    /**
     * 金额层次中文映射 
     */
    public static $FINANCE_UNIT_MAP = array(
        0  => '分',
        1  => '角',
        2  => '圆',
        3  => '拾',
        4  => '佰',
        5  => '仟',
        6  => '万',
        7  => '拾',
        8  => '佰',
        9  => '仟',
        10 => '亿',
        11 => '拾',
    );

}

<?php
class MoneyFinanceCommon
{

    const MAX_FINANCE_LEN = 10;
    const FINANCE_SYMBOL  = &#39;￥&#39;;
    const YUAN_POINT      = &#39;圆&#39;;  // 这里也写了配置，本来应该是统一的，但是因为这个文本基本不会变化，所以就这样写啦
    const WAN_POINT       = &#39;万&#39;;
    const YI_POINT        = &#39;亿&#39;;

    /**
     * parseNumToArr 将数字转换位数组
     * 
     * @param double $num 
     * @static
     * @access public
     * @return void
     */
    public static function parseNumToArr($num)
    {
        return str_split($num); 
    }


    /**
     * ticketFinanceChDesc 票据金额中文描述
     * 
     * @param double $sourceNum
     * @static
     * @access public
     * @return array(
     *              &#39;9&#39; => '', // 仟万
     *              '8' => '', // 佰万
     *              '7' => '', // 拾万
     *              '6' => '', // 万
     *              '5' => '', // 仟
     *              '4' => '', // 佰
     *              '3' => '', // 拾
     *              '2' => '', // 圆
     *              '1' => '', // 角
     *              '0' => '', // 分
     *          );
     */
    public static function ticketFinanceChDesc($sourceNum)                                                                   [67/1580]
    {
        $sourceNum = number_format($sourceNum, 2, '.', '');  // 保证金额是精确到分
        $numArr = self::parseNumToArr($sourceNum); 
        if (false !== ($key = array_search('.', $numArr))) {
            unset($numArr[$key]); 
        }
        
        $rnumArr = array_reverse($numArr);
        $data = array();
        $i = 0;
        foreach ($rnumArr as $num) {
            $data[$i++] = $num;
        }
        
        if ($i < self::MAX_FINANCE_LEN) {
            $data[] = self::FINANCE_SYMBOL; 
        }
        $data = array_pad($data, self::MAX_FINANCE_LEN, &#39;&#39;);  // 高位用空字符占位
        $result = array_reverse($data);
        
        return $result;
    }
                                                                                                                             [43/1580]
    /**
     * financeNumToCh 
     * 
     * @param double $sourceNum
     * @static
     * @access public
     * @return string $chAmount
     */
    public static function financeNumToCh($sourceNum)
    {
        $sourceNum = number_format($sourceNum, 2, &#39;.&#39;, &#39;&#39;);  // 保证金额是精确到分
        $numArr = self::parseNumToArr($sourceNum); 
        if (false !== ($key = array_search(&#39;.&#39;, $numArr))) {
            unset($numArr[$key]); 
        }

        $amount = array();
        $numArrRev = array_reverse($numArr);
        $i = 0;
        foreach ($numArrRev as $num) {
            $amount[$i++]  = $num;
        }
        $amount = array_reverse($amount, true);  // 这里再一次反转目的是保证key 的顺序
        $chAmount = self::convertNumArrToChStr($amount);
        return $chAmount;
    }
    /**                                                                                                                      [15/1580]
     * convertNumArrToChStr 将数字数组转换位中文数组
     * 
     * @param array $numArr  待转换的数字数组
     * @static
     * @access public
     * @return string $chStr
     */
    public static function convertNumArrToChStr($numArr)
    {
        $data    = array();
        $exists0 = false;  // 是否存在0 
        $chStr   = &#39;&#39;;
        $unitMap = array_flip(MoneyConstConfig::$FINANCE_UNIT_MAP);
        $yuan = $unitMap[self::YUAN_POINT];
        $wan  = $unitMap[self::WAN_POINT];
        $yi   = $unitMap[self::YI_POINT];
        foreach ($numArr as $key => $num) {
            if ($num != 0) {
                if ($exists0 === true) {
                    $chStr   .= '零';
                    $exists0 = false;
                }
                $chStr .= MoneyConstConfig::$NUM_CH_MAP[$num] . MoneyConstConfig::$FINANCE_UNIT_MAP[$key]; 
            } else {
                $exists0 = true; 
            } 

            if ($key == $yuan) {
                $chStr = rtrim($chStr, self::YUAN_POINT);
                $chStr .= self::YUAN_POINT;
            } elseif ($key == $wan) {
                $chStr = rtrim($chStr, self::WAN_POINT); 
                $chStr .= self::WAN_POINT;
            } elseif ($key == $yi) {
                $chStr = rtrim($chStr, self::YI_POINT); 
                $chStr .= self::YI_POINT;
            }
        }   
        return $chStr;
    }
    

}

以上、アラビア数字の中国語への変換をその側面も含めて紹介しましたが、PHP チュートリアルに興味のある友人に役立つことを願っています。