WHAT IS interface in PHP with example?
A PHP interface defines a contract which a class must fulfill. If a PHP class is a blueprint for objects, an interface is a blueprint for classes. Any class implementing a given interface can be expected to have the same behavior in terms of what can be called, how it can be called, and what will be returned.
Where do we use interface in PHP?
PHP – What are Interfaces? Interfaces allow you to specify what methods a class should implement. Interfaces make it easy to use a variety of different classes in the same way. When one or more classes use the same interface, it is referred to as “polymorphism”.
Can we declare variables in interface PHP?
Interfaces, like abstract classes, include abstract methods and constants. However, unlike abstract classes, interfaces can have only public methods, and cannot have variables.
Why is interface needed in PHP?
The interface is another property of PHP that enables the developer to build a program without any complex methods. It inherits the same public method that a class holds. Due to these properties, an interface can define methods.
What is the use of interface?
You use an interface to define a protocol of behavior that can be implemented by any class anywhere in the class hierarchy. Interfaces are useful for the following: Capturing similarities among unrelated classes without artificially forcing a class relationship.
WHAT IS interface in OOP with example?
An interface is a description of the actions that an object can do… for example when you flip a light switch, the light goes on, you don’t care how, just that it does. In Object Oriented Programming, an Interface is a description of all functions that an object must have in order to be an “X”.
Can PHP implement multiple interfaces?
Yes, more than two interfaces can be implemented by a single class. From the PHP manual: Classes may implement more than one interface if desired by separating each interface with a comma.
What is the difference between abstract class and interface PHP?
In this article, you will learn about the difference between abstract class and interface in PHP….Abstract Class.
| Interface Class | Abstract Class |
|---|---|
| Since everything is assumed to be public, an interface class does not have access modifiers by default. | An abstract class can contain access modifiers within subs, functions, and properties. |
What is difference between class and interface in PHP?
What is interface example?
Why is interface used?
What is difference between abstract class and interface in PHP?
Can one interface extend another interface PHP?
Every PHP programmer knows you can’t extend multiple classes with PHP. You can only do one – which is fine. In fact, if you need more shared code, make sure to focus on using traits instead.
Where do we use abstract class and interface in real life scenario?
A concrete example of an abstract class would be a class called Animal. You see many animals in real life, but there are only kinds of animals. That is, you never look at something purple and furry and say “that is an animal and there is no more specific way of defining it”.
Can we create object of interface?
No, you cannot instantiate an interface. Generally, it contains abstract methods (except default and static methods introduced in Java8), which are incomplete.
What is interface real life example?
The Interface is a medium to interact between user and system devices. For example, in our real life, if we consider the interface to be given as an example is the air condition, bike, ATM machine, etc.
What is the real time example of interface?
An interface in java it has static constants and abstract methods only. for real time example – it is 100% abstraction. example is, Comparator Interface. If a class implements this interface, then it can be used to sort a collection.