Welcome to the Object Tools and Variables MCQs Page

Dive deep into the fascinating world of Object Tools and Variables with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Object Tools and Variables, a crucial aspect of PHP. In this section, you will encounter a diverse range of MCQs that cover various aspects of Object Tools and Variables, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within PHP.

Check out the MCQs below to embark on an enriching journey through Object Tools and Variables. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of PHP.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Object Tools and Variables. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Object Tools and Variables MCQs | Page 8 of 17

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Q71.

If I already had a Debug class in the main namespace. What will be the output of the following code?

namespace main;
use com\getinstance\util\Debug;
<pre lang="php" cssfile="hk1_style" >
class Debug {
    static function helloWorld() {
        print "hello from main\Debug";
    } 
}
 
Debug::helloWorld();

error

hello from main

hello from main\Debug

debug

Discuss

Answer: (a).error

Q72.

Which one of the following statements is true for include_once() and require_once()?

Both are exactly the same

include_once is used for files where as require_once() is not

Both Handle the errors in the same way

Both do not handle the errors in the same way

Discuss

Answer: (d).Both do not handle the errors in the same way

Q73.

Which one of the following statements is true for require() and require_once()?

They are functions

They are statements

They’ll not work if the () is not present

They can not be used to require files

Discuss

Answer: (b).They are statements

Q74.

Which function was introduced to help automate the inclusion of class files?

__load()

__preload()

__autoload()

__inload()

Discuss

Answer: (c).__autoload()

Q75.

How many times can you define __autoload in a process?

once

twice

thrice

as many times as needed

Discuss

Answer: (a).once

Q76.

Which one of the following functions will you use to check that the class exists before you work with it?

class_exist()

class_exists()

exist()

exists_class()

Discuss

Answer: (b).class_exists()

Q77.

Which one of the following will you use to check the class of an object?

class()

_class()

class_check()

get_class()

Discuss

Answer: (d).get_class()

Q78.

PHP 4 did not support instanceof. Instead, which function did it provide?

is()

get_class()

is_a()

is_the()

Discuss

Answer: (c).is_a()

Q79.

You use the get_class_methods() function to return the names of all the methods in the class. Which function will you use to print it on the screen?

printf()

print_ar

print_r

echo

Discuss

Answer: (c).print_r

Q80.

If you call a method and it doesn’t exist it’ll cause a problem. To check the method which function will you use?

_method()

methodexists()

is_callable()

is_method()

Discuss

Answer: (c).is_callable()

Page 8 of 17

Welcome to the Object Tools and Variables MCQs Page

Object Tools and Variables MCQs | Page 8 of 17

Explore more Topics under PHP

Basics of PHP

Arrays and Functions in PHP

Object Oriented PHP

Error and Exception Handling in PHP

Strings and Regular Expressions

PHP Filesystem

Session Handling in PHP

Objects and Databases in PHP

Constants and Operators in PHP

PHP Controls Structures

Functions in PHP

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