spl_autoload_register实例化类

Question

We know that autoloading your classes is saving time and lines of codes, however. I must instantiate that class with $config = new config(); in order to use that loaded class.

spl_autoload_register(function($class) {
    include $class . '.class.php';
});

Is it possible to load all my classes with spl_autoload_register and then instantiate all those classes:

spl_autoload_register(function($class) {
    include $class . '.class.php';
    $class = new $class;
});

Answer 1

That doesn't make any sense since autoload is called whenever you instantiate an object, and not for instantiating new objects.