JS把数字金额转换成中文大写数字的函数

//把数字金额转换成中文大写数字的函数
function num2rmb ($num){
    $c1="零壹贰叁肆伍陆柒捌玖";
    $c2="分角元拾佰仟万拾佰仟亿"; 

    $num=round($num,2);
    $num=$num*100;
    $NewNum = ceil($num);
    if(strlen($NewNum)>10){
    return "金额太大";
    } 

    $i=0;
    $c=""; 

    while (1){
    if($i==0){
    $n=substr($num,strlen($num)-1,1);
    }else{
    $n=$num %10;
    } 

    $p1=substr($c1,2*$n,2); 

    $p2=substr($c2,2*$i,2);
    if($n!='0' || ($n=='0' &&($p2=='亿' || $p2=='万' || $p2=='元' ))){
    $c=$p1.$p2.$c;
    }else{
    $c=$p1.$c;
    } 

    $i=$i+1;
    $num=$num/10;
    $num=(int)$num; 

    if($num==0){
    break;
    }
    }//end of while| here, we got a chinese string with some useless character
    //we chop out the useless characters to form the correct output     $j = 0;
    $slen=strlen($c);
    while ($j< $slen) {
    $m = substr($c,$j,4); 

    if ($m=='零元' || $m=='零万' || $m=='零亿' || $m=='零零'){
    $left=substr($c,0,$j);
    $right=substr($c,$j+2);
    $c = $left.$right;
    $j = $j-2;
    $slen = $slen-2;
    }
    $j=$j+2;
    } 

    if(substr($c,strlen($c)-2,2)=='零'){
    $c=substr($c,0,strlen($c)-2);
    } // if there is a '0' on the end , chop it out
    return $c;
}// end of function