Indian currency comma in PHP

In PHP Currency number comma in indian style

<?php
$amount = '150000';
$amount = moneyFormatIndia( $amount );
echo $amount;

function moneyFormatIndia($num) {
    $explrestunits = "" ;
    if(strlen($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; // writes the final format where $currency is the currency symbol.
}
?>

<?php

$amount = '150000';

$amount = moneyFormatIndia( $amount );

echo $amount;

function moneyFormatIndia($num) {

$explrestunits = "" ;

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; // writes the final format where $currency is the currency symbol.

}

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