PHP 数字转财务数字

 /**
   *数字金额转换成中文大写金额的函数
   *String Int $num 要转换的小写数字或小写字符串
   *return 大写字母
   *小数位为两位
   **/
  private function num_to_rmb($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";
      }
  }