What is encapsulation in PHP?
A). Hiding data implementation details
B). Exposing data publicly
C). Implementing interfaces
D). Inheriting properties
Which keyword is used to access static properties or methods in PHP?
A). this
B). parent
C). self
D). static
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 statements is true about polymorphism?
A). It allows a class to inherit from multiple classes
B). It allows a class to have multiple constructors
C). It allows a method to have multiple implementations
D). It allows a class to override parent class methods
Which of the following is NOT a principle of OOP?
A). Inheritance
B). Polymorphism
C). Abstraction
D). Linearity
How is polymorphism achieved in PHP?
A). Method overriding
B). Method overloading
C). Method inheritance
D). Method encapsulation
What is the purpose of method overloading in PHP?
A). Different parameters
B). Same parameters
C). Override a method
D). Access private methods
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 is the default access modifier in PHP?
A). public
B). protected
C). private
D). No default modifier