I am attempting to override a function from a extend class, but with a different argument.

I understand that you are not allowed to pass different arguments type to a overridden function, but what about argument extending the base type of the previous argument?

That’s my base class :

class ConfirmablePasswordController extends Controller
{
    /**
     * Confirm the user's password.
     *
     * @param  IlluminateHttpRequest  $request
     * @return IlluminateContractsSupportResponsable
     */
    public function store(Request $request)
    {
        // body ...
    }
}

I am now creating a new class extending the previous base class :

class MyCustomConfirmablePasswordController extends ConfirmablePasswordController
{
    public function store(Request $request)
    {
        // body ...
    }
}

This is working as excepted, no surprises.

Now, consider this object :

class MyCustomeConfirmablePasswordRequest extends Request
{
    // body...
}

Now, I am attempting to change the Request $request argument with CommonConfirmablePasswordRequest $request, it doesn’t work anymore – because apparently, it’s not the same function signature.

class MyCustomConfirmablePasswordController extends ConfirmablePasswordController
{
    public function store(MyCustomerConfirmablePasswordRequest $request)
    {
        // body ...
    }
}

What did I do wrong ? Is it even possible to do such a thing in PHP ?