Online PHP editor | output for 14rTK

<?php class Food {} class AnimalFood extends Food {} abstract class Animal { protected string $name; public function __construct(string $name) { $this->name = $name; } public function eat(AnimalFood $food) { echo $this->name . " eats " . get_class($food); } } class Dog extends Animal { public function eat(Food $food) { echo $this->name . " eats " . get_class($food); } } class Cat extends Animal { public function eat(Food $food) { echo $this->name . " eats " . get_class($food); } } interface AnimalShelter { public function adopt(string $name): Animal; } class CatShelter implements AnimalShelter { public function adopt(string $name): Cat // instead of returning class type Animal, it can return class type Cat { return new Cat($name); } } class DogShelter implements AnimalShelter { public function adopt(string $name): Dog // instead of returning class type Animal, it can return class type Dog { return new Dog($name); } } $kitty = (new CatShelter)->adopt("Ricky"); $catFood = new AnimalFood(); $kitty->eat($catFood); echo "\n"; $doggy = (new DogShelter)->adopt("Mavrick"); $banana = new Food(); $doggy->eat($banana);