php 错误：类必须声明为抽象或实现其余方法
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Error: Class must be declared abstract or implement the remaining methods
提问by Andrew
I have a class that implements several abstract methods. When I extend that class I get the following fatal error message:
我有一个实现几个抽象方法的类。当我扩展该类时，我收到以下致命错误消息：
Class CI_Controller_Rest contains 6 abstract methods and must therefore be declared abstract or implement the remaining methods
The class with abstract methods:
具有抽象方法的类：
class CI_Controller_Rest extends CI_Controller {
public function __construct() {
parent::__construct();
}
abstract public function index();
abstract public function get();
abstract public function head();
abstract public function post();
abstract public function put();
abstract public function delete();
}
The class where I extend CI_Controller_Rest:
我扩展的类CI_Controller_Rest：
class Welcome extends CI_Controller_Rest {
public function __construct()
{
parent::__construct();
}
public function index() {}
public function get() {}
public function head() {}
public function post() {}
public function put() {}
public function delete() {}
}
What should I do more than this?
除了这些，我还应该做什么？
回答by Wayne Whitty
If a class has one or more abstract functions, it MUST be declared as an abstract class:
如果一个类有一个或多个抽象函数，它必须被声明为一个抽象类：
abstract class CI_Controller_Rest extends CI_Controller {
public function __construct() {
parent::__construct();
}
abstract public function index();
abstract public function get();
abstract public function head();
abstract public function post();
abstract public function put();
abstract public function delete();
}
回答by S3Mi
abstract class CI_Controller_Rest extends CI_Controller {
public function __construct() {
parent::__construct();
}
abstract public function index();
abstract public function get();
abstract public function head();
abstract public function post();
abstract public function put();
abstract public function delete();
}
回答by Guillermo Hernández
CI_Controller_Rest must be an abstract class because it contains abstract methods
CI_Controller_Rest 必须是抽象类，因为它包含抽象方法
abstract class CI_Controller_Rest extends CI_Controller {
public function __construct() {
parent::__construct();
}
abstract public function index();
abstract public function get();
abstract public function head();
abstract public function post();
abstract public function put();
abstract public function delete();
}
