Can interface implements interface

A class can implement two interfaces which define a method with the same name, only if the method declaration in both interfaces is identical. A class that implements an interface may use a different name for its parameters than the interface.

However, as of PHP 8. For that reason, it is strongly recommended that developers use the same parameter names as the interface being implemented. Note : Interfaces can be extended like classes using the extends operator. Note : The class implementing the interface must declare all methods in the interface with a compatible signature. It's possible for interfaces to have constants. An interface, together with type declarations, provides a good way to make sure that a particular object contains particular methods.

See instanceof operator and type declarations. Traits ». Submit a Pull Request Report a Bug. Object Interfaces Object interfaces allow you to create code which specifies which methods a class must implement, without having to define how these methods are implemented. In practice, interfaces serve two complementary purposes: To allow developers to create objects of different classes that may be used interchangeably because they implement the same interface or interfaces.

Implements denotes defining an implementation for the methods of an interface. However interfaces have no implementation so that's not possible. An interface can however extend another interface, which means it can add more methods and inherit its type. Ben Souther. I like Mayu Mayooresan. This is my understanding When you implement an Interface to a class you must re-declare all the class and fill them up.

Which is not possible in Interface as Interfaces are abstract. For example:. The public access specifier indicates that the interface can be used by any class in any package. If you do not specify that the interface is public, then your interface is accessible only to classes defined in the same package as the interface.

An interface can extend other interfaces, just as a class subclass or extend another class. However, whereas a class can extend only one other class, an interface can extend any number of interfaces. The interface declaration includes a comma-separated list of all the interfaces that it extends.