What keyword is used in PHP to implement inheritance?
A). extends
B). implements
C). inherits
D). inherits_from
Which access modifier in PHP restricts access to class members?
A). public
B). protected
C). private
D). access
What is encapsulation in PHP?
A). Hiding data implementation details
B). Exposing data publicly
C). Implementing interfaces
D). Inheriting properties
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
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 of the following is NOT a principle of OOP?
A). Inheritance
B). Polymorphism
C). Abstraction
D). Linearity
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
In PHP, what is the default visibility of class members?
A). Public
B). Protected
C). Private
D). Global
What is the benefit of using polymorphism in PHP?
A). Increased complexity
B). Improved readability
C). Decreased flexibility
D). Increased maintainability