Inheritance is a fundamental concept in object-oriented programming that allows a new class to inherit properties and methods from an existing class. This promotes code reusability and establishes a hierarchical relationship between classes.
For example, if we have a base class called Animal
with some common properties and methods, we can create subclasses like Dog
and Cat
that inherit from Animal
. This way, both Dog
and Cat
can utilize the common features defined in Animal
while having their specific behaviors as well.
<?php
class Animal {
public function speak() {
return "Animal speaks";
}
}
class Dog extends Animal {
public function bark() {
return "Woof!";
}
}
class Cat extends Animal {
public function meow() {
return "Meow!";
}
}
$dog = new Dog();
echo $dog->speak(); // Outputs: Animal speaks
echo $dog->bark(); // Outputs: Woof!
$cat = new Cat();
echo $cat->speak(); // Outputs: Animal speaks
echo $cat->meow(); // Outputs: Meow!
?>
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