controller with service locator,

controller_with_service_locator.php

<?php

// =================================================================================
// == Inject Service Locator into controller
// =================================================================================

class ServiceLocator extends StrictClass
{
    /**
     * @return UserService
     */
    public function userService()
    {
        return new UserService($this->daoFacotory()->userDao());
    }

}

abstract class HttpController extends StrictClass
{
    /**
     * @var ServiceLocator
     */
    protected $serviceLocator;

    /**
     * @var HttpResponse
     */
    protected $response;

    /**
     * @var HttpRequest
     */
    protected $request;

    public function __construct(ServiceLocator $serviceLocator, HttpResponse $response, HttpRequest $request) // <-- Should I enject the serviceLocator
    {
        $this->serviceLocator = $serviceLocator;
        $this->response       = $response;
        $this->request        = $request;
    }
}

class UserController extends HttpController
{
    public function get()
    {
        $data = $this->services->userService()->selectAll();
        // do stuff
    }

    public function post()
    {
        $userDto = $this->services->userService()->create($this->request->params['firstName'], $this->request->params['lastName']);
        // do stuff
    }
}

// =================================================================================
// == Inject explicit dependency into controller's method
// =================================================================================


abstract class HttpControllerWithDI extends StrictClass
{
    /**
     * @var HttpResponse
     */
    protected $response;

    /**
     * @var HttpRequest
     */
    protected $request;

    public function __construct(HttpResponse $response, HttpRequest $request)
    {
        $this->response       = $response;
        $this->request        = $request;
    }
}

class UserControllerWithDI extends HttpControllerWithDI
{
    public function get(UserService $userService)
    {
        $data = $userService->selectAll();
        // do stuff
    }

    public function post(UserService $userService)
    {
        $userDto = $userService->create($this->request->params['firstName'], $this->request->params['lastName']);
        // do stuff
    }
}