带有大写和小写classname的自动加载器

spl_autoload_register(function ($classname) {
    $file = str_replace('\\', DIRECTORY_SEPARATOR, $classname) . '.php';
    if (file_exists($file)) {
        require $file;
    }
});

public class ClassLoader {
    public static void main(String[] args) {
        String className = "com.example.MyClass";
        try {
            Class<?> clazz = Class.forName(className);
            Object obj = clazz.newInstance();
            // 使用反射调用类的方法或访问类的属性
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}