BDClient.php

<?php
class DBConnect
{
    const DB_NAME = "test.db";
    private $db;
    
    static private $_instance = null;
    
    private function __construct()
    {
        $db = new PDO("mysql:host=localhost;dbname=test.db", "root", "");    
    }
    
    static function getInstance()
    {
        if (!self::$_instance) {
            self::$_instance = new DBConnect();
        }
        return self::$_instance;
    }
}
?>

MainController.php

<?php
class MainController extends Controller
{
	function __construct()
    {
        $this->view = new View();
        $this->model = new MainModel();
    }

	function actionIndex()
    {	
    	$data = $this->model->get_data();
        $this->view->generate('mainView.php', $data);
    }
}

MainModel.php

<?php
class MainModel extends Model
{
	public function get_data()
    {
    	$db = DBConnect::getInstance();
    	$msq= "SELECT * FROM  post ORDER by id DESC";
    	var_dump($db);
    	$result = $db->query($msq);
    	return $result;
    }
}

Router.php

<?php
class Router
{
    public function start()
    {
        $controllerName = "Main";
        $actionName     = "Index";
        $routes         = explode("/", $_SERVER['REQUEST_URI']);
        if (!empty($routes[2])) {
            $controllerName = $routes[2];
        }
        if (!empty($route[3])) {
            $actionName = $route[3];
        }
        $modelName      = $controllerName . "Model";
        $controllerName = $controllerName . "Controller";
        $actionName     = "action" . $actionName;
        $modelFile      = $modelName . ".php";
        $modelPath      = "application/models/" . $modelFile;
        if (file_exists($modelPath)) {
            include $modelPath;
        }
        $controllerFile = $controllerName . ".php";
        $controllerPath = "application/controllers/" . $controllerFile;
        if (file_exists($controllerPath)) {
            include $controllerPath;
        } else {
            $this->error404();
        }
        $controller = new $controllerName;
        $action     = $actionName;
        if (method_exists($controller, $action)) {
            $controller->$action();
        } else {
            $this->error404();
        }
    }
    
    private function error404()
    {
            $host = 'http://' . $_SERVER['HTTP_HOST'] . '/' . "MVC/";
            header('HTTP/1.1 404 Not Found');
            header("Status: 404 Not Found");
            header('Location:' . $host . 'Unknow');
        }
}
?>

view.php

<?php
class View
{
    function generate($contentView, $date = null)
    {
        if (is_array($date)) {
            extract($date);
        }
        include "application/views/templateView.php";
    }
}