PHP OOP 从另一个类调用方法

Question

我是OOP的新手。我试图保持坚实的原则。有一些问题。这是我的代码。当我在UploaderClient中作为依赖项class Image()，class Video()或其他东西传递时，有没有办法访问class GenericUploader中的class FileManager方法(使用抽象类，因为我可以提供一些基本功能(？目标始终是可以访问class FileManager方法，如果我作为依赖项图像、视频或文件管理器传递，则没有限制？

interface IFile
{
public function crete(array $data);
}
interface IFileManager extends IFile
{
public function exist(int $id);
}
class FileManager implements IFileManager
{
public function crete(array $data)
{
// store in DB files
}
public function exist()
{
}
}
class Image implements IFile
{
public function crete(array $data)
{
//access to FileManager
// store in DB image and files
}
}
abstract class GenericUploader
{
public $service;
public function __construct(IFile $service)
{
$this->service = $service;
}
public function upload()
{
//access to FileManager if $service is new Image()
}
}
class ImageUploader extends GenericUploader
{
public function __construct(IFile $service)
{
parent::__construct($service);
}
}
class FileManagerUploader extends GenericUploader
{
public function __construct(IFile $service)
{
parent::__construct($service);
}
}
class UploaderClient
{
public function uploadFile(IFile $service)
{
$name = get_class($service);
$uploaderClass = $name . 'Uploader';
if (class_exists($uploaderClass)) {
$uploader = new $uploaderClass($service);
$uploader->upload();
}
}
}
$client = new UploaderClient();
$client->uploadFile(new Image());
$client->uploadFile(new FileManager());

更新：例如，如果我扩展图像

class Image extends FileManager implements IFile
{
public function crete(array $data)
{
//access to FileManager
// store in DB image and files
}
}

从 GenericUploader 以这种方式($this->service->exist(访问类 FileManage 方法是否错误？是否违反开/关原则？

Answer 1

如果我理解写你的问题 - 请尝试我的代码。有一个trait，它可以帮助您：

上发：

interface IFile
{
public function crete(array $data);
}
// You can only implement interface, but not extends
class Image implements IFile
{
public function crete(array $data)
{
//access to FileManager
// store in DB image and files
}
}
class FileManager implements IFile
{
public function crete(array $data)
{
// store in DB files
}
public function exist(int $id)
{
}
}
abstract class GenericUploader extends FileManager
{
public $service;
public function __construct(IFile $service)
{
$this->service = $service;
}
public function upload()
{
//access to FileManager if $service is new Image()
}
}
class ImageUploader extends GenericUploader
{
public function __construct(IFile $service)
{
parent::__construct($service);
}
}
class FileManagerUploader extends GenericUploader
{
public function __construct(IFile $service)
{
parent::__construct($service);
}
}
class UploaderClient
{
public function uploadFile(IFile $service)
{
$name = get_class($service);
$uploaderClass = $name . 'Uploader';
if (class_exists($uploaderClass)) {
$uploader = new $uploaderClass($service);
$uploader->upload();
}
}
}
$client = new UploaderClient();
$client->uploadFile(new Image());
$client->uploadFile(new FileManager());