interfaces in PHP. Simple example

Interfaces are instructions for creating your classes. We cannot create a body of our methods in the interface

Lets create interfaces for our imaginary character properties:

interface Multiplyable{
        //create a property that will be needed in the future will be described in the class that uses this interface
	public function multiple(int $mult);
}

interface Transportable{
	public function moveTo();
}

interface Destroyable{
	public function destroy();
}

interface LiveUnit{
	public function makeAction();
}

Like classes, one interface can inherit another:

interface IOnGameCard extends Multiplyable, Transportable, Destroyable, LiveUnit{
}

Now let’s use our class interfaces:

class Animal implements LiveUnit, Transportable, Destroyable{
	public function moveTo(){}
	public function destroy(){}
	public function makeAction(){}
}

class Wall implements Destroyable{
	public function destroy(){}
}

class Stone implements Transportable, Destroyable{
	public function moveTo(){}
	public function destroy(){}
}

class Seaweed implements Transportable, Destroyable, Multiplyable{
	public function moveTo(){}
	public function destroy(){}
	public function multiple(){}
}

Interfaces in PHP. Code examples

May 17, 2022

Roman-tk