PHP OOP : Interfaces

What is Interfaces?

  • Interfaces help us to use multiple classes in a single class inherit.
  • Interfaces are declared with the interface keyword.
  • Derived class is called derived class.
  • object not be created in interface.
  • Property should not be defined in interface(class).
  • All interface methods must be public.
  • All methods in an interface are abstract.
  • To implement an interface, a class must use the implements keyword.

Example :-

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