class App
{
private $fileOrderManager;
private $pageManager;
private $routes = [
'/' => 'getIndex',
'/admin' => 'getAdminPage',
'/order' => 'save'
];

function __construct($fileOrderManager,$pageManager)
{
$this->fileOrderManager=$fileOrderManager;
$this->pageManager= $pageManager;
}

public function run()
{echo "in run()<br>";
$path = parse_url($_SERVER['REQUEST_URI']);
echo 'path->'.$path."<br>";
$method = $this->routes[$path['path']] ?? 'getIndex';
echo "method->".$method.'<br>';
if(!method_exists($this, $method)) {
  echo "return from run()<hr>";
  return; // throw exception
}
    $this->$method();

     $this->pageManager->getIndex();
     $this->pageManager->getAdminPage();
     $this->fileOrderManager->save();
     //$this->fileOrderManager->list();

}

}