PHP5 offers a static methods and static member variables.A special kind of method that can be called without instantiating a class.Static methods don’t depend on the properties of a particular instance of a class but belong to the class itself.…

An interface simply lists (function prototype) the methods a class must implement. However, in PHP a class can implement multiple interfaces and these interfaces can also be used in type hinting. An INTERFACE is provided so you can describe a…

Abstract classes and methods are introduced in PHP 5. The concept behind the abstract class is that we need to extend this class by its descendant class(es). If a class contains abstract method then the class must be declared as…

Final Keywords prevents child classes from overriding a method by prefixing the definition with final. If the class itself is being defined final then it cannot be extended. Final keyword helps us to put some constraint on classes and it’s…