PHP Questions & Answers – Advanced Object-Oriented PHP

This set of PHP Multiple Choice Questions & Answers (MCQs) focuses on “Advanced Object-Oriented PHP”.

1. Which of the following advanced OOP features is/are not supported by PHP?

i) Method overloading
ii) Multiple Inheritance
iii) Namespaces
iv) Object Cloning

a) i)
b) ii)
c) i) and ii)
d) iii) and iv)
View Answer

2. Which version of PHP introduced the advanced concepts of OOP?
a) PHP 4
b) PHP 5
c) PHP 5.3
d) PHP 6
View Answer

3. Which one of the following is the right way to clone an object?
a) _clone(targetObject);
b) destinationObject = clone targetObject;
c) destinationObject = _clone(targetObject);
d) destinationObject = clone(targetObject);
View answer

4. The class from which the child class inherits is called ________

i) Child class
ii) Parent class
iii) Super class
iv) Base class

a) Only i)
b) ii), iii) and iv)
c) Only iii)
d) ii) and iv)
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5. Which of the following is/are true for an abstract class?
i) Abstract classes in PHP are declared with the help of abstract keyword.
ii) A class is declare abstract by using the keyword implements.
iii) It is a class that really isn’t supposed to ever be instantiated but instead serves as a base class.
iv) Attempting to instantiate an abstract class results in an error.
a) Only i)
b) Only iii)
c) ii) and iv)
d) ii), iii) and iv)
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6. If one intends to create a model that will be assumed by a number of closely related objects, which class must be used?
a) Normal class
b) Static class
c) Abstract class
d) Interface
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7. If your object must inherit behavior from a number of sources you must use a/an
a) Interface
b) Object
c) Abstract class
d) Static class
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8. Which method is used to tweak an object’s cloning behavior?
a) clone()
b) __clone()
c) _clone
d) object_clone()
View Answer

9. Which feature allows us to call more than one method or function of the class in single instruction?
a) Typecasting
b) Method Including
c) Method adding
d) Method chaining
View Answer

$a = new Order();
$a->CreateOrder()->sendOrderEmail()->createShipment();

10. Which magic method is used to implement overloading in PHP?
a) __call
b) __invoke
c) __wakeup
d) __unset
View Answer

Sanfoundry Global Education & Learning Series – PHP Programming.

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