问如何在PHP中显示印度数字格式的货币？

EN

$num = 1234567890.123;

$num = preg_replace("/(\d+?)(?=(\d\d)+(\d)(?!\d))(\.\d+)?/i", "$1,", $num);

echo $num;

// Input : 1234567890.123

// Output : 1,23,45,67,890.123


// Input : -1234567890.123

// Output : -1,23,45,67,890.123

function moneyFormatIndia($num){

$explrestunits = "" ;
$num = preg_replace('/,+/', '', $num);
$words = explode(".", $num);
$des = "00";
if(count($words)<=2){
    $num=$words[0];
    if(count($words)>=2){$des=$words[1];}
    if(strlen($des)<2){$des="$des";}else{$des=substr($des,0,2);}
}
if(strlen($num)>3){
    $lastthree = substr($num, strlen($num)-3, strlen($num));
    $restunits = substr($num, 0, strlen($num)-3); // extracts the last three digits
    $restunits = (strlen($restunits)%2 == 1)?"0".$restunits:$restunits; // explodes the remaining digits in 2's formats, adds a zero in the beginning to maintain the 2's grouping.
    $expunit = str_split($restunits, 2);
    for($i=0; $i<sizeof($expunit); $i++){
        // creates each of the 2's group and adds a comma to the end
        if($i==0)
        {
            $explrestunits .= (int)$expunit[$i].","; // if is first value , convert into integer
        }else{
            $explrestunits .= $expunit[$i].",";
        }
    }
    $thecash = $explrestunits.$lastthree;
} else {
    $thecash = $num;
}
return "$thecash.$des"; // writes the final format where $currency is the currency symbol.

}

function amount_inr_format($amount) {
    $fmt = new \NumberFormatter($locale = 'en_IN', NumberFormatter::DECIMAL);
    return $fmt->format($amount);
}