//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".

​

//Interfaces are declared with the interface keyword

<?php

interface Animal {

  public function makeSound();

}

​

class Cat implements Animal {

  public function makeSound() {

    echo "Meow";

  }

}

​

$animal = new Cat();

$animal->makeSound();

?>

//output: Meow

<?php

// Interface definition

interface Cars {

  public function carDetails();

}

​

// Class definitions

class Tata implements Cars {

  public function carDetails() {

    echo " Tata Car Details \n";

  }

}

​

class Audi implements Cars {

  public function carDetails() {

    echo " Audi Car Details \n";

  }

}

​

class Honda implements Cars {

  public function carDetails() {

    echo " Honda Car Details \n";

  }

}

​

class Maruti implements Cars {

  public function carDetails() {

    echo " Maruti Car Details \n";

  }

}

​

// Create a list of Cars object

$objTata = new Tata();

print $objTata->carDetails();

$objAudi = new Audi();

print $objAudi->carDetails();

$objHonda = new Honda();

print $objHonda->carDetails();

$objMaruti = new Maruti();

print $objMaruti->carDetails();

?>

interface MyInterface {

    public function myMethod();

    public function anotherMethod($param);

}