PHP 数字金额转换成中文大写金额的函数

/** *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 != '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($c)-3);        }        //将处理的汉字加上“整”        if (empty($c)) {                return "零元整";        }else{                return $c . "整";        }}echo num_to_rmb(23000000.00); //贰仟叁佰万元整