App\Http\Middleware\LocaleMiddleware::handle PHP Метод

    public function handle($request, Closure $next)
    {
        /**
         * Locale is enabled and allowed to be changed
         */
        if (config('locale.status')) {
            if (session()->has('locale') && in_array(session()->get('locale'), array_keys(config('locale.languages')))) {
                /**
                 * Set the Laravel locale
                 */
                app()->setLocale(session()->get('locale'));
                /**
                 * setLocale for php. Enables ->formatLocalized() with localized values for dates
                 */
                setLocale(LC_TIME, config('locale.languages')[session()->get('locale')][1]);
                /**
                 * setLocale to use Carbon source locales. Enables diffForHumans() localized
                 */
                Carbon::setLocale(config('locale.languages')[session()->get('locale')][0]);
                /**
                 * Set the session variable for whether or not the app is using RTL support
                 * for the current language being selected
                 * For use in the blade directive in BladeServiceProvider
                 */
                if (config('locale.languages')[session()->get('locale')][2]) {
                    session(['lang-rtl' => true]);
                } else {
                    session()->forget('lang-rtl');
                }
            }
        }
        return $next($request);
    }