Presenter

class Country {
    private $value;

    public function __construct(string $value)
    {
        $this->value = $value;
    }

    public function __toString(): string
    {
        return $this->value;
    }
}

class Locale {
    private $value;
    private $country;

    public function __construct(string $value, Country $country) {
        $this->value = $value;
        $this->country = (string)$country;
    }

    public function presentWith(callable $presenter): array {
        return $presenter($this->value, $this->country);
    }
}

$locale = new Locale('RU', new Country('RUSSIA'));

$present = $locale->presentWith(function(string $locale, string $country) {
    return [
        'locale' => $locale,
        'country' => $country
    ];
});