代碼如下：
index.php

<?php
use?App\Route;
use?App\Controller\HomeController;
define('BASEDIR',?__DIR__);
include?BASEDIR?.?'/App/Loader.php';
spl_autoload_register('\\App\\Loader::autoload');
HomeController::index();
call_user_func('HomeController::index');

App\Controller\HomeController.php

<?php
namespace?App\Controller;
class?HomeController{
????public?static?function?index(){
????????echo?__METHOD__;
????}
}

App\loader.php

<?php
namespace?App;
class?Loader{
????public?static?function?autoload($class){
????????$class?=?str_replace('\\',?'/',?$class);
????????require?BASEDIR?.?'/'?.$class?.?'.php';
????}
}

運行結果：
App\Controller\HomeController::index
Warning: ?require(D:\wwwroot\htdocs\dd/HomeController.php): failed to open stream: No such file or directory in D:\wwwroot\htdocs\dd\App\Loader.php on line 10

Fatal error: ?require(): Failed opening required 'D:\wwwroot\htdocs\dd/HomeController.php' (include_path='.;C:\php\pear') in D:\wwwroot\htdocs\dd\App\Loader.php on line 10我知道寫成call_user_func('App\Controller\HomeController::index');是可以解決問題的。
但是采用簡單的call_user_func('HomeController::index');寫法，應該怎么解決