pseudo code for application flow idea

bootstrap.php

<?php

require './container.php';
require './event-handler.php';

$app = new Application();
$router = new Router($app);

$app->eventHandler->dispatch(Events::START);

$router->put('/user/:id', function ($request, $app) {
    // psr server request, set by the router from globals

    $user = $app->domain->user->get($request->parameters->id);
    $user->updatedAt = date('Y-m-d H:i:s');
    $user->update(); // calls app update user event
    
    return $app->container->get('http')->back()->status('user edited'); // returns psr response
});

$router->emit();

$app->eventHandler->dispatch(Events::END);