php金钱显示小写转大写

class numToUpper{
function del0($num){ //去掉数字段前面的0
return "".intval($num);
}

function n2c($x){  //单个数字变汉字
$arr_n = array("零","一","二","三","四","五","六","七","八","九","十");
return $arr_n[$x];
}

function num_r($abcd){ //读取数值（4位）
$arr= array();
$str = ""; //读取后的汉字数值
$flag = 0; //该位是否为零
$flag_end = 1; //是否以“零”结尾
$size_r = strlen($abcd);
for($i=0; $i<$size_r; $i++) {
$arr[$i] = $abcd{$i};
}
$arrlen = count($arr);
for($j=0; $j<$arrlen; $j++) {
$ch = $this->n2c($arr[$arrlen-1-$j]); //从后向前转汉字
if($ch == "零" && $flag == 0){ //如果是第一个零
$flag = 1; //该位为零
$str = $ch.$str; //加入汉字数值字符串
continue;
}elseif($ch == "零"){ //如果不是第一个零了
continue;
}
$flag = 0; //该位不是零
switch($j) {
case 0: $str = $ch; $flag_end = 0; break; //第一位（末尾），没有以“零”结尾
case 1: $str = $ch."十".$str; break; //第二位
case 2: $str = $ch."百".$str; break; //第三位
case 3: $str = $ch."千".$str; break; //第四位
}
}
if($flag_end == 1){ //如果以“零”结尾
mb_internal_encoding("UTF-8");
$str = mb_substr($str, 0, mb_strlen($str)-1); //把“零”去掉
}
return $str;
}
function num2ch($num){ //整体读取转换
$num_real = $this->del0($num);//去掉前面的“0”
$numlen = strlen($num_real);
//echo "numlen=".$numlen."";
$a = $b = $c = '';
if($numlen >= 9){//如果满九位，读取“亿”位
$y=substr($num_real, -9, 1);
//echo $y;
$wsbq = substr($num_real, -8, 4);
$gsbq = substr($num_real, -4);
$a = $this->num_r($this->del0($gsbq));
$b = $this->num_r($this->del0($wsbq))."万";
$c = $this->num_r($this->del0($y))."亿";
}elseif($numlen <= 8 && $numlen >= 5){ //如果大于等于“万”
$wsbq = substr($num_real, 0, $numlen-4);
$gsbq = substr($num_real, -4);
$a = $this->num_r($this->del0($gsbq));
$b = $this->num_r($this->del0($wsbq))."万";
$c="";
}elseif($numlen <= 4){ //如果小于等于“千”
$gsbq = substr( $num_real, -$numlen);
$a = $this->num_r($this->del0($gsbq));
$b="";
$c="";
}
$ch_num = $c.$b.$a;
return $ch_num;
}
}