MVC not opening links how it should "controller/action" - php

Question

So i am new to MVC and im trying to understand how this works.
As i understood this is how the autoloder should open
http://www.example.com/controller/action.
I have this is my indexAction
public function indexAction()
{
$this->view->setVars([
'name' => 'Stefan',
]);
}
And this in my index.phtml
<h1>Hello <?php echo $name ?></h1>
But when i call my local-host this is how he tried to open it.
Page not found: \Mvc\ControllerInterface\IndexControllerInterface::IndexAction
Here is my full autoloader
<?php
// simple autoloader
spl_autoload_register(function ($className)
{
if (substr($className, 0, 4) !== 'Mvc\\')
{
// not our business
return;
}
$fileName = __DIR__.'/'.str_replace('\\', DIRECTORY_SEPARATOR, substr($className, 4)).'.php';
if (file_exists($fileName))
{
include $fileName;
}
});
// get the requested url
$url = (isset($_GET['_url']) ? $_GET['_url'] : '');
$urlParts = explode('/', $url);
// build the controller class
$controllerName = (isset($urlParts[0]) && $urlParts[0] ? $urlParts[0] : 'index');
$controllerClassName = '\\Mvc\\ControllerInterface\\'.ucfirst($controllerName).'ControllerInterface';
// build the action method
$actionName = (isset($urlParts[1]) ? $urlParts[1] : 'index');
$actionMethodName = ucfirst($actionName).'Action';
//var_dump($url,$urlParts,$controllerName,$actionMethodName);
//
try {
if (!class_exists($controllerClassName)) {
throw new \Mvc\Library\NotFoundException();
}
$controller = new $controllerClassName();
if (!$controller instanceof \Mvc\Controller\ControllerInterface || !method_exists($controller, $actionMethodName)) {
throw new \Mvc\Library\NotFoundException();
}
$view = new \Mvc\Library\View(__DIR__.DIRECTORY_SEPARATOR.'views', $controllerName, $actionName);
$controller->setView($view);
$controller->$actionMethodName();
$view->render();
} catch (\Mvc\Library\NotFoundException $e) {
http_response_code(404);
echo 'Page not found: '.$controllerClassName.'::'.$actionMethodName;
} catch (\Exception $e) {
http_response_code(500);
echo 'Exception: <b>'.$e->getMessage().'</b><br><pre>'.$e->getTraceAsString().'</pre>';
}
And here is my folder structure.
I tried playing around with the folder Structure and with my xxamp httpd conf.
But nothing relly works.
What am i missing here.

Answer 1

There are a couple of things I can see wrong.
First you are ending $controllerClassName with "ControllerInterface" whereas your class according to your directory structure your index controller is IndexController.
Secondly when checking if an object is not an instance of a particular class you need to wrap the negated check in parenthesis e.g. if (!($controller instanceof \Mvc\Controller\ControllerInterface)){} see example 3 here http://php.net/manual/en/language.operators.type.php