PHP OOP: Abstract class for animal

Last update on December 20 2024 10:21:32 (UTC/GMT +8 hours)

Write a PHP abstract class called 'Animal' with abstract methods like 'eat()' and 'makeSound()'. Create subclasses like 'Dog', 'Cat', and 'Bird' that implement these methods.

Sample Solution:

PHP Code :

<?php
abstract class Animal
{
    abstract public function eat();
    abstract public function makeSound();
}

class Dog extends Animal
{
    public function eat()
    {
        echo "Dog is eating.</br>";
    }

    public function makeSound()
    {
        echo "Dog is barking.</br>";
    }
}

class Cat extends Animal
{
    public function eat()
    {
        echo "Cat is eating.</br>";
    }

    public function makeSound() {
        echo "Cat is meowing.</br>";
    }
}

class Bird extends Animal
 {
    public function eat()
    {
        echo "Bird is eating.</br>";
    }

    public function makeSound()
    {
        echo "Bird is chirping.</br>";
    }
}

$dog = new Dog();
$dog->eat();
$dog->makeSound();

$cat = new Cat();
$cat->eat();
$cat->makeSound();

$bird = new Bird();
$bird->eat();
$bird->makeSound();
?>

Sample Output:

Dog is eating.
Dog is barking.
Cat is eating.
Cat is meowing.
Bird is eating.
Bird is chirping.

Explanation:

In the above exercise -

The "Animal" class is declared an abstract class, meaning it cannot be instantiated directly. It contains abstract methods eat() and makeSound() which are declared but not implemented.
The "Dog", "Cat", and "Bird" classes are subclasses of "Animal" and implement the abstract methods eat() and makeSound() as required by the parent abstract class.

Flowchart:

PHP Code Editor:

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