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 access modifier in PHP restricts access to class members?
A). public
B). protected
C). private
D). access
What is the default access modifier in PHP?
A). public
B). protected
C). private
D). No default modifier
Which keyword is used to access static properties or methods in PHP?
A). this
B). parent
C). self
D). static
Which of the following is NOT a principle of OOP?
A). Inheritance
B). Polymorphism
C). Abstraction
D). Linearity
Which keyword is used to access parent class properties in PHP?
A). parent
B). super
C). this
D). self
What is the benefit of using polymorphism in PHP?
A). Increased complexity
B). Improved readability
C). Decreased flexibility
D). Increased maintainability
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
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 main purpose of encapsulation?
A). To make classes more readable
B). To hide implementation details
C). To increase code complexity
D). To prevent inheritance
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