View file app/Controllers/ExampleController.php
<?php declare(strict_types=1); namespace App\Controllers; use Psr\Http\Message\ResponseInterface as Response; use Psr\Http\Message\ServerRequestInterface as Request; /** * HomeController */ class ExampleController extends Controller { public function index(Request $request, Response $response): Response { $response->getBody()->write('Hello world'); return $response; } }