PHP stupid 5 minutes router

Router.php

class Router
{
    private $methods = array(
        "GET", "POST", "PUT",
        "PURGE", "DELETE"
    );

    private $routes;

    public function __call($name, $arguments)
    {
        if(!in_array(strtoupper($name), $this->methods))
            die("method " . $name . " not found !");

        if(!isset($arguments[0], $this->methods)) die("url is required !");
        if(!isset($arguments[1], $this->methods)) die("action is required !");

        array_unshift($arguments, $name);

        $this->routes[] = $this->parse($arguments);
    }

    public function initiate()
    {
        foreach($this->routes as $route)
        {
            if(preg_match($route['pattern'], $_SERVER['REQUEST_URI']))
            {
                if($_SERVER['REQUEST_METHOD'] == strtoupper($route['method']))
                {

                    preg_match($route['pattern'], $_SERVER['REQUEST_URI'], $m);
                    array_shift($m);
                    $route['params'] = $m;

                    if($route['action'] instanceof \Closure)
                    {
                        $do = call_user_func($route['action'], ...$route['params']);

                        switch(gettype($do))
                        {
                            case "string" : echo $do; break;
                            case "array"  :;
                            case "object" : echo json_encode($do); break;
                        }
                        return;
                    }
                }

            }
        }

        echo "not found";
    }

    private function parse($args)
    {
        $r = array();

        $r['method']  = strtoupper($args[0]);

        $uri = str_replace('{', "(", $args[1]);
        $uri = str_replace('}', ")", $uri);
        $r['pattern'] = "~^" . $uri . "$~";

        $r['action']  = $args[2];
        $r['params']  = array();

        return $r;
    }


    public function __destruct()
    {
        $this->initiate();
    }
}

$router = new Router;

$r->get("/users/{\d*}", function($id){

    return "hello" . $id;
});