Integrating with Slim Framework

Slim 4 accepts FastForward Container through its PSR-11 interface. This example uses Slim 4 with slim/psr7 as its PSR-7 implementation. Install the framework packages alongside fast-forward/container :

composer require slim/slim:^4 slim/psr7:^1 psr/log:^3

After loading Composer's autoloader:

use function FastForward\Container\container;
use FastForward\Container\ServiceProvider\ArrayServiceProvider;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
use Slim\Factory\AppFactory;

$provider = new ArrayServiceProvider([
    LoggerInterface::class => fn() => new NullLogger(),
]);
$container = container($provider);

$app = AppFactory::createFromContainer($container);
$app->get('/ping', function (ServerRequestInterface $request, ResponseInterface $response): ResponseInterface {
    $logger = $this->get(LoggerInterface::class);
    $logger->info('Ping route called');
    $response->getBody()->write(json_encode(['pong' => true], JSON_THROW_ON_ERROR));

    return $response->withHeader('Content-Type', 'application/json');
});

Slim binds the route closure to the configured container, making $this->get() available inside it. Replace NullLogger with your application's logger. Call $app->run() from the HTTP entry point to handle the incoming request.