Answer & Solution
class Dog extends Animal { }In PHP, the extends keyword is used to implement inheritance, where the child class (Dog) inherits from the parent class (Animal).
class Dog extends Animal { }Which of the following is NOT a principle of OOP?
A). Inheritance
B). Polymorphism
C). Abstraction
D). Linearity
What does the final keyword do when applied to a method in PHP?
A). Mark as deprecated
B). Prevent override
C). Define as abstract
D). Enable instantiation
What is the primary purpose of method overriding in PHP?
A). Hide implementation
B). Provide alternative
C). Prevent inheritance
D). Define in parent
What is the default access modifier in PHP?
A). public
B). protected
C). private
D). No default modifier
What is the purpose of the interface keyword in PHP?
A). Finalize a class
B). Define a contract
C). Abstract a class
D). Create a subclass
Which keyword is used to access static properties or methods in PHP?
A). this
B). parent
C). self
D). static
How is polymorphism achieved in PHP?
A). Method overriding
B). Method overloading
C). Method inheritance
D). Method encapsulation
Which keyword is used to access parent class properties in PHP?
A). parent
B). super
C). this
D). self
Which of the following is an advantage of inheritance in PHP?
A). Increases code reusability
B). Decreases code maintainability
C). Adds complexity to the code
D). Makes code less modular
Which access modifier in PHP restricts access to class members?
A). public
B). protected
C). private
D). access