echo date('Y-m-d H:i:s');
echo date('Y-m-d', 1710938096);

$date = new DateTimeImmutable('2026-03-20 14:30:45', new DateTimeZone('Europe/Paris'));
echo $date->format('Y-m-d H:i:s T');
// 2026-03-20 14:30:45 CET

echo $date->setTimezone(new DateTimeZone('America/New_York'))->format('Y-m-d H:i:s T');
// 2026-03-20 09:30:45 EDT

date_format($date, 'Y-m-d'); // то же самое, что $date->format('Y-m-d')

// Хранение в БД / логи
$date->format('Y-m-d H:i:s');

// ISO 8601 / API
$date->format('c'); // или DATE_ATOM

// Человекочитаемый
$date->format('d F Y'); // 20 March 2026

// 12-часовой формат
$date->format('g:i A'); // 2:30 PM

echo date('Y-m-d \a\t H:i', 1710938096);
// 2024-03-20 at 12:34

// src/Auth/UserSession.php
class UserSession
{
    private static ?User $currentUser = null;

    public static function set(User $user): void
    {
        self::$currentUser = $user;
    }

    public static function get(): ?User
    {
        return self::$currentUser;
    }

    public static function clear(): void
    {
        self::$currentUser = null;
    }
}

// src/Middleware/AuthMiddleware.php
class AuthMiddleware
{
    public function __construct(
        private readonly UserRepository $userRepository,
        private readonly JWTService     $jwt,
    ) {}

    public function handle(Request $request, callable $next): Response
    {
        $token = $request->headers->get('Authorization');

        if (!$token) {
            return new Response(status: 401);
        }

        $payload = $this->jwt->decode(str_replace('Bearer ', '', $token));
        $user    = $this->userRepository->find($payload['sub']);

        UserSession::set($user);

        return $next($request);
    }
}

// src/Controller/DashboardController.php
class DashboardController
{
    public function index(): Response
    {
        $user = UserSession::get();

        return new Response(
            body: $this->renderDashboard($user),
        );
    }
}

// src/Console/CacheWarmupCommand.php
class CacheWarmupCommand
{
    public function execute(): void
    {
        $users = $this->userRepository->findAll();

        foreach ($users as $user) {
            UserSession::set($user);
            $this->warmupForUser($user);
        }

        // прогрев завершён
    }
}