code: public static function formatPhoneNumberToInternationalFormat($countryCode, $number, $numberLength)
      {
          $actualNumber = substr($number, -($numberLength), $numberLength);
  
          if (!$actualNumber) {
              return $number;
          }
  
          return '+' . $countryCode . $actualNumber;
      }
docs: Returns the international format of the given number
  @author Adeyemi Olaoye <yemi@cottacush.com>
  @param $countryCode
  @param $number
  @param $numberLength
  @return string