What is method overriding

Method overriding is a feature of object-oriented programming that allows a subclass to provide a specific implementation of a method that is already defined in its superclass. This enables dynamic polymorphism, where the method that gets executed is determined at runtime based on the object's actual class type.


            <?php
            class Animal {
                public function sound() {
                    return "Some sound";
                }
            }

            class Dog extends Animal {
                public function sound() {
                    return "Bark";
                }
            }

            class Cat extends Animal {
                public function sound() {
                    return "Meow";
                }
            }

            $animal1 = new Dog();
            $animal2 = new Cat();

            echo $animal1->sound(); // Outputs: Bark
            echo $animal2->sound(); // Outputs: Meow
            ?>