How to load controller / create router for php mvc framework - php

Question

I am writing a light weight php mvc framework for my portfolio and as a barebone setup for my future developments. I am stuck now because I am trying to use PSR-4 autoloader through composer. I understand the concept of PSR-4 etc but I am wondering how should I handle the routing.
My folder structure is:
--|-Root---
index.php
composer.json
-----|-application------
--------|-controller----
--------|-model---------
--------|-core----------
-----------|-baseController.php
-----------|-Application.php
-----------|-baseView.php
-----------|-baseModel.php
--------|-view----------
--------|-config
-----------|-config.php
-----|-vendor------
--------|-autoload.php
-----|-assets------
I am fairly good with php but writing an own mvc framework is a hard challange, even bigger because I never used PSR standards before.
Now my questions are:
Should I use router at all?
If yes then what pattern should I use to acomplish that.
So, in my index.php I define all constants to store directories like ROOT, APP, VENDOR. I then load vendor/autoload.php generated from my composer.json. After autoload.php I load and initiate my config by calling this code:
if(is_readable(APP . 'config/config.php'))
{
require APP . 'config/config.php';
//Initiate config
new AppWorld\Confyy\config();
}
else
{
throw new Exception('config.php file was not found in' . APP . 'config');
}
After config I setup application environment and then I initiate my app by calling:
// Start the application
new AppWorld\FrostHeart\Application();
Then my baseController is very very thin:
<?php
namespace AppWorld\FrostHeart;
use AppWorld\FrostHeart\baseView as View;
abstract class baseController {
public $currentView;
public function __construct() {
//Initiate new View object and set currentView to this object.
$this->currentView = new View();
}
}
And this is my baseView.php:
<?php
namespace AppWorld\FrostHeart;
class baseView {
public function show($file, $data = null, $showTemplate = 1) {
if($data != null) {
foreach($data as $key => $value) {
$this->{$key} = $value;
}
}
if($showTemplate === 1) {
require VIEW_DIR . header . ".php";
require VIEW_DIR . $file . ".php";
require VIEW_DIR . footer . ".php";
}
elseif($showTemplate === 0)
{
require VIEW_DIR . $file . ".php";
}
}
}
my config.php:
<?php
namespace AppWorld\Confyy;
class config {
public function __construct() {
$this->application();
$this->database();
}
public function application() {
/**
* Define application environment, defaults are:
*
* development
* live
*
*/
define("ENVIRONMENT", "development");
//Define base url
define("BASE_URL", "http://" . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']);
//Define default controller
define("DEFAULT_CONTROLLER", "landing");
//Define default method
define("DEFAULT_METHOD", "index");
//Define controllers directory
define("CONTROLLER_DIR", APP . "controller/");
//Define views directory
define("VIEW_DIR", APP . "view/");
}
public function database() {
//Define DB Server
define("DB_SERVER", "localhost");
//Define DB User
define("DB_USER", "root");
//Define DB Password
define("DB_PASSWORD", "");
//Define DB Name
define("DB_NAME", "test");
}
}
and at last my composer.json autoload section:
"autoload": {
"psr-4":{
"AppWorld\\": "application",
"AppWorld\\Conffy\\": "application/config",
"AppWorld\\FrostHeart\\": "application/core",
"AppWorld\\Controls\\": "application/controller"
}
}
So how should I implement a router that routes the URL requests and load correct files?
Thanks!