src/Text/Utils.php
public static function formatPhoneNumberToInternationalFormat($countryCode, $number, $numberLength)
    {
        $actualNumber = substr($number, -($numberLength), $numberLength);

        if (!$actualNumber) {
            return $number;
        }

        return '+' . $countryCode . $actualNumber;
    }
public static function formatPhoneNumberToInternationalFormat($countryCode, $number, $numberLength)
    {
        $actualNumber = substr($number, -($numberLength), $numberLength);

        if (!$actualNumber) {
            return $number;
        }

        return '+' . $countryCode . $actualNumber;
    }
Returns the international format of the given number
@author Adeyemi Olaoye <yemi@cottacush.com>
@param $countryCode
@param $number
@param $numberLength
@return string