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