How to call a class from another file in Symfony2?

Question

symfony

Good afternoon Toaster! After working with a "self-made" engine, I decided to start learning Symfony2. But there was a following problem.
There is a Constants.php file in the Helpers folder, and it contains the AppBundle\Helpers namespace and the Obj class. I'm trying to call the whole thing in a certain ToolsController controller:

namespace AppBundle\Controller;

use AppBundle\Helpers;

class ToolsController extends Controller
{
    public function indexAction()
    {
        $a = Helpers\Obj::User;
        ...
    }
}

, and the Obj class itself looks like this:

namespace AppBundle\Helpers;

class Obj {

    const User = 1;
    ...
}

But Symfony gave me an error (Attempted to load class "Obj" from namespace "AppBundle\Helpers"). A search in the official documentation and on the Internet showed that the name of the class and file must match. Actually, the question itself - is it possible to bypass this mechanism somehow (for example, in order to use several classes in one file)?

Answer 1

https://getcomposer.org/doc/04-schema.md#autoload - we look at the classmap section, but in general, yes, the file and class names must match, it's easier to find where everything is.
ps Kdass-kelpers are bad. Learn to come up with adequate names filled with meaning.