Routing class

Route.php

<?php
class Route
{
    private $routes = array();

    public function init()
    {
        $match = $this->match();

        $controller = '\\app\\Controllers\\' . $match['controller'];

        // Create new instance
        $instance = new $controller;

        // Call the method with his parameters
        call_user_func_array([ $instance, $match['action'] ], $match['parameters']);
    }

    public function map($uri, $callback)
    {
        // Split into controller & action
        list($controller, $action) = explode('@', $callback);

        // Check if the controller (and action exists)
        if (!file_exists('app' . DS . 'Controllers' . DS . $controller . '.php')) {
            throw new Exception('File not found.');
        }

        include_once 'app' . DS . 'Controllers' . DS . $controller . '.php';

        if (!class_exists('App\\Controllers\\' . $controller)) {
            throw new Exception('Error 1');
        }

        if (!method_exists('App\\Controllers\\' . $controller, $action))
        {
            throw new Exception('App\\Controllers\\' . $controller . '::' . $action . ' is not found.');
        }

        // Check for {parameters}
        preg_match_all('/{(.*?)}/', $uri, $parameters);

        // Save the routes
        $this->routes[] = [ 'controller' => $controller, 'action' => $action, 'parameters' => $parameters[1], 'uri' => $uri ];
    }

    public function match()
    {
        $requestUri = explode('/', ltrim($_SERVER['REQUEST_URI'], '/'));

        $index = 0;

        foreach ($this->routes as $route) {
            $j = 0;
            
            $uri = explode('/', ltrim($route['uri'], '/'));

            //for ($i = 0; $i < (count($requestUri) - count($route['parameters'])); $i++) {
            for ($i = 0; $i < count($requestUri); $i++) {
                if (in_array($requestUri[$i], $uri) === true) {
                    $j++;

                    unset($requestUri[$i]);
                }
            }

            if ($j == (count($uri) - count($route['parameters']))) {
                break;
            }

            $index++;
        }

        // Reset the index
        $parameters = array_values($requestUri);

        // Check if the parameters are less or not equal
        if (count($parameters) != count($this->routes[$index]['parameters'])) {
            throw new Exception('Wrong amount of parameters given.');
        }

        $k = 0;

        foreach ($parameters as $parameter) {
            if (preg_match('/[A-Za-z0-9]/', $parameter) !== false) {
                $k++;

                continue;
            }

            break;
        }

        if ($k != count($parameters)) {
            throw new Exception('There are some parameters not alphanumeric.');
        }

        // Replace the parameters with real values
        $this->routes[$index]['parameters'] = $parameters;

        return $this->routes[$index];
    }
}