数组金额转大写-PHP源码

/**
*数字金额转换成中文大写金额的函数
*String Int  $num  要转换的小写数字或小写字符串
*return 大写字母
*小数位为两位
**/
function num_to_rmb($num){
        $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) {
                return "金额太大，请检查";
        } 
        $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 != &＃39;0&＃39; || ($n == &＃39;0&＃39; && ($p2 == &＃39;亿&＃39; || $p2 == &＃39;万&＃39; || $p2 == &＃39;元&＃39;))) {
                        $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 == &＃39;零元&＃39; || $m == &＃39;零万&＃39; || $m == &＃39;零亿&＃39; || $m == &＃39;零零&＃39;) {
                        $left = substr($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) == &＃39;零&＃39;) {
                $c = substr($c, 0, strlen($c)-3);
        }
        //将处理的汉字加上“整”
        if (empty($c)) {
                return "零元整";
        }else{
                return $c . "整";
        }
}
echo num_to_rmb(4562845.56);