<!DOCTYPE html>
<html>
<body>
<?php
// Interface definition
interface Animal {
public function makeSound();
}
// Class definitions
class Cat implements Animal {
public function makeSound() {
echo " Meow ";
}
}
class Dog implements Animal {
public function makeSound() {
echo " Bark ";
}
}
class Mouse implements Animal {
public function makeSound() {
echo " Squeak ";
