index.php

<?php

define('BASEDIE',__DIR__);

require_once('Config/Loader.php');

spl_autoload_register('\\Config\\Loader::autoload');//注册自动加载

Config\Object::test();//命名空间调用Object

App\Index::test();//命名空间调用Index

App/Index.php

<?php

namespace App;

class Index{

    static function test(){

        echo "APP INDEX";

    }

}  

Config/Loader.php

<?php

namespace Config;  

class Loader{

    static function autoload($class)

    {

        require_once(BASEDIE.'/'.str_replace('\\','/',$class).'.php');

    }

}  

Config/Object.php

<?php

namespace Config;  

class Object{

    static function test(){

        echo "OBJECT";

    }  

}