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30+ Introduction to Object Oriented Programming in PHP Solved MCQs

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Chapter: Introduction to Object Oriented Programming in PHP

1.	Which method scope prevents a method from being overridden by a subclass?
A.	Abstract
B.	Protected
C.	Final
D.	Static
Answer» C. Final

discuss

2.	Which of the following statements are true is/are true about constructors in PHP? (i) PHP 4 introduced class constructors. (ii) Constructors can accept parameters. (iii) Constructors can call class methods or other functions (iv) Class constructors can call on other constructors.
A.	All of the mentioned
B.	None of the mentioned
C.	only i
D.	only ii
Answer» A. All of the mentioned

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3.	PHP recognize constructors by the name.
A.	class name()
B.	_construct()
C.	function _construct()
D.	function __construct()
Answer» D. function __construct()

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4.	Which version of PHP introduced the instance of keyword?
A.	PHP 4
B.	PHP 5
C.	PHP 5.3
D.	PHP 6
Answer» B. PHP 5

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5.	Which one of the following functions is used to determine whether a class exists?
A.	exist()
B.	exist_class()
C.	class_exist()
D.	exist()
Answer» C. class_exist()

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6.	Which one of the following functions is used to determine object type?
A.	obj_type()
B.	type()
C.	is_a()
D.	is_obj()
Answer» C. is_a()

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7.	Which one of the following keyword is used to inherit our subclass into a superclass?
A.	. extends
B.	. implements
C.	. inherit
D.	. include
Answer» A. . extends

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8.	Which keyword is used to refer to properties or methods within the class itself?
A.	. private
B.	public
C.	protected
D.	. $this
Answer» D. . $this

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9.	Which keyword allows class members (methods and properties) to be used without needing to instantiate a new instance of the class?
A.	protected
B.	. final
C.	static
D.	private
Answer» C. static

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10.	_________ is a blue print of any object in OOP.
A.	class
B.	object
C.	Construct
D.	Serializing
Answer» A. class

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11.	An _____ is an instance or occurrence of our class.....
A.	class
B.	object
C.	Construct
D.	Serializing
Answer» B. object

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12.	The _____ method starts with two underscores (__).
A.	class
B.	object
C.	Construct
D.	Serializing
Answer» C. Construct

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13.	_______an object means converting it to a byte stream representation that can be stored into file.
A.	class
B.	object
C.	Construct
D.	Serializing
Answer» D. Serializing

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14.	A class property used by another class is called ______.
A.	Abstract class
B.	Interface
C.	Encapsulation
D.	inheritance.
Answer» D. inheritance.

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15.	_________is used to support multiple inheritance
A.	Abstract class
B.	Interface
C.	Encapsulation
D.	inheritance.
Answer» B. Interface

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16.	The ability to hide the details of implementation is known as _____.
A.	Abstract class
B.	Interface
C.	Encapsulation
D.	inheritance.
Answer» C. Encapsulation

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17.	An _______ is one that cannot be instantiated, only inherited
A.	Abstract class
B.	Interface
C.	Encapsulation
D.	inheritance.
Answer» A. Abstract class

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18.	Constant name are proceeded by _____ like a normal variable declaration.
A.	Abstract class
B.	dollar sign($)
C.	Encapsulation
D.	inheritance.
Answer» B. dollar sign($)

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19.	_______ is available when a method is called from within an object context
A.	Abstract class
B.	dollar sign($)
C.	$this
D.	inheritance.
Answer» C. $this

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20.	in PHP, An _____is a special variable, which can hold more than one value at a time.
A.	array
B.	structure
C.	csss
D.	none of these
Answer» A. array

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21.	In PHP, there are three types of arrays:
A.	Indexed arrays -
B.	Associative arrays -
C.	Multidimensional arrays -
D.	all of the above
Answer» D. all of the above

discuss

22.	in PHP ,The____ function is used to return the length (the number of elements) of an array:
A.	count
B.	min
C.	abs
D.	sqrt()
Answer» A. count

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23.	The index can be assigned automatically (index always starts at 0), like this: $cars = array("Volvo", "BMW", "Toyota");
A.	true
B.	false
C.	both a and b
D.	none of these
Answer» A. true

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24.	The _____ functions can be used to find the lowest or highest value in a list of arguments:
A.	count & num
B.	min & max
C.	abs & count
D.	sqrt() & round
Answer» B. min & max

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25.	The _____ function returns the absolute (positive) value of a number:
A.	count
B.	min
C.	abs
D.	sqrt()
Answer» C. abs

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26.	the _____function returns the square root of a number:
A.	count
B.	min
C.	abs
D.	sqrt()
Answer» D. sqrt()

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27.	The _____function rounds a floating-point number to its nearest integer:
A.	round
B.	min
C.	abs
D.	sqrt()
Answer» A. round

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28.	The _______ function generates a random number:
A.	rand
B.	min
C.	abs
D.	sqrt()
Answer» A. rand

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29.	To create a constant, use the _____ function.is used
A.	define()
B.	min()
C.	abs()
D.	sqrt()
Answer» A. define()

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30.	In PHP7, you can create an Array constant using the ____ function.
A.	define()
B.	min()
C.	abs()
D.	sqrt()
Answer» A. define()

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31.	The ____statement is used to perform different actions based on different conditions.
A.	switch
B.	min
C.	abs
D.	sqrt()
Answer» A. switch

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32.	The PHP ____function formats a timestamp to a more readable date and time.
A.	date()
B.	min()
C.	abs()
D.	sqrt()
Answer» A. date()

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33.	A ______is a small file that the server embeds on the user's computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookie values.
A.	cookie
B.	session
C.	abs
D.	sqrt
Answer» A. cookie

discuss

34.	A ______ is a way to store information (in variables) to be used across multiple pages.
A.	cookie
B.	session
C.	abs
D.	sqrt
Answer» B. session

discuss

35.	_______are the two main aspects of object-oriented programming.
A.	classes and objects
B.	constructor and destructor
C.	object and array
D.	none of these
Answer» A. classes and objects

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36.	A ______allows you to initialize an object's properties upon creation of the object.
A.	classes
B.	constructor
C.	object
D.	none of these
Answer» B. constructor

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37.	If you create a __construct() function, PHP will automatically call this function when you create an object from a class.
A.	true
B.	false
C.	both a and b
D.	none of these
Answer» A. true

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38.	A ______is called when the object is destructed or the script is stopped or exited.
A.	destructor
B.	constructor
C.	object
D.	none of these
Answer» A. destructor

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39.	If you create a __destruct() function, PHP will automatically call this function at the end of the script.
A.	true
B.	false
C.	both a and b
D.	none of these
Answer» A. true

discuss

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30+ Introduction to Object Oriented Programming in PHP Solved MCQs

Which method scope prevents a method from being overridden by a subclass?

Which of the following statements are true is/are true about constructors in PHP? (i) PHP 4 introduced class constructors. (ii) Constructors can accept parameters. (iii) Constructors can call class methods or other functions (iv) Class constructors can call on other constructors.

PHP recognize constructors by the name.

Which version of PHP introduced the instance of keyword?

Which one of the following functions is used to determine whether a class exists?

Which one of the following functions is used to determine object type?

Which one of the following keyword is used to inherit our subclass into a superclass?

Which keyword is used to refer to properties or methods within the class itself?

Which keyword allows class members (methods and properties) to be used without needing to instantiate a new instance of the class?

_________ is a blue print of any object in OOP.

An _____ is an instance or occurrence of our class.....

The _____ method starts with two underscores (__).

_______an object means converting it to a byte stream representation that can be stored into file.

A class property used by another class is called ______.

_________is used to support multiple inheritance

The ability to hide the details of implementation is known as _____.

An _______ is one that cannot be instantiated, only inherited

Constant name are proceeded by _____ like a normal variable declaration.

_______ is available when a method is called from within an object context

in PHP, An _____is a special variable, which can hold more than one value at a time.

In PHP, there are three types of arrays:

in PHP ,The____ function is used to return the length (the number of elements) of an array:

The index can be assigned automatically (index always starts at 0), like this: $cars = array("Volvo", "BMW", "Toyota");

The _____ functions can be used to find the lowest or highest value in a list of arguments:

The _____ function returns the absolute (positive) value of a number:

the _____function returns the square root of a number:

The _____function rounds a floating-point number to its nearest integer:

The _______ function generates a random number:

To create a constant, use the _____ function.is used

In PHP7, you can create an Array constant using the ____ function.

The ____statement is used to perform different actions based on different conditions.

The PHP ____function formats a timestamp to a more readable date and time.

A ______is a small file that the server embeds on the user's computer. Each time the same computer requests a page with a browser, it will send the cookie too. With PHP, you can both create and retrieve cookie values.

A ______ is a way to store information (in variables) to be used across multiple pages.

_______are the two main aspects of object-oriented programming.

A ______allows you to initialize an object's properties upon creation of the object.

If you create a __construct() function, PHP will automatically call this function when you create an object from a class.

A ______is called when the object is destructed or the script is stopped or exited.

If you create a __destruct() function, PHP will automatically call this function at the end of the script.

Which of the following statements are true is/are true about constructors in PHP?
(i) PHP 4 introduced class constructors.
(ii) Constructors can accept parameters.
(iii) Constructors can call class methods or other functions
(iv) Class constructors can call on other constructors.

The ___ method starts with two underscores ().