Convert PHP number to Indian rupee format

numberToCurrency.php

public function numberToCurrency($num)
{
    if(setlocale(LC_MONETARY, 'en_IN'))
      return money_format('%.0n', $num);
    else {
      $explrestunits = "" ;
      if(strlen($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;
    }
}

updated above function to handle numbers with decimal

https://gist.github.com/hitswa/e7f6ca5a72af2a480193540ad4bb0a75