Functional\Exceptions\InvalidArgumentException::assertPositiveInteger PHP Method

    public static function assertPositiveInteger($value, $callee, $parameterPosition)
    {
        if ((string) (int) $value !== (string) $value || $value < 0) {
            $type = gettype($value);
            $type = $type === 'integer' ? 'negative integer' : $type;
            throw new static(sprintf('%s() expects parameter %d to be positive integer, %s given', $callee, $parameterPosition, $type));
        }
    }