Welcome to the Strings and Regular Expressions MCQs Page

Dive deep into the fascinating world of Strings and Regular Expressions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Strings and Regular Expressions, a crucial aspect of PHP. In this section, you will encounter a diverse range of MCQs that cover various aspects of Strings and Regular Expressions, 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 Strings and Regular Expressions. 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 Strings and Regular Expressions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Strings and Regular Expressions MCQs | Page 3 of 10

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Q21.

Which PHP function treats a string as collection of characters rather than a sequence?

strspn ( )

strcspn ( )

count_chars

All of them

Discuss

Answer: (d).All of them

Q22.

By using special wildcards for matching a string which function is used?

Strtok

Tokenizing

Delimiter

Regex

Discuss

Answer: (d).Regex

Q23.

In Perl-compatible patterns any pattern that is followed by ? this means that

Match this pattern 1 or more times

Match this pattern exactly 1 time

Match this pattern 0 times

None of them

Discuss

Answer: (b).Match this pattern exactly 1 time

Q24.

What is meaning of "." in POSIX style regex?

Matches any character of a string

Matches the beginning of a string

Matches the end of a string

None of them

Discuss

Answer: (a).Matches any character of a string

Q25.

Why a special character is used in beginning and end of string in Perl-compatible patterns?

Because it indicates the beginning and end of the pattern

Because it indicates that it?s a integer string

Because it indicates the literal

It indicates nothing

Discuss

Answer: (a).Because it indicates the beginning and end of the pattern

Q26.

Ereg ( ) function is no more included in

PHP1.0

PHP2

PHP5

PHP6

Discuss

Answer: (d).PHP6

Q27.

Inverse function of explode ( ) is

strtok ( )

str ( )

impose ( )

implode ( )

Discuss

Answer: (d).implode ( )

Q28.

All these functions are preg_quote ( ), preg_grep ( ), preg_split ( ), preg_match_all ( ) example of

POSIX style regex

Competent style regex

Perl compatible style regex

None of them

Discuss

Answer: (c).Perl compatible style regex

Q29.

Htmlspecialchars ( ) function takes a string as argument and returns string in which form, that has a special meaning in HTML

Replaces a string with four characters

Replaces a string in integers

Replaces a string with quotation marks

None of them

Discuss

Answer: (a).Replaces a string with four characters

Q30.

MD5 is not secure to store passwords because

Its produces output in hexadecimal values

It produces the same output string as given input string

It produces Boolean results

None of them

Discuss

Answer: (b).It produces the same output string as given input string

Page 3 of 10

Welcome to the Strings and Regular Expressions MCQs Page

Strings and Regular Expressions MCQs | Page 3 of 10

Explore more Topics under PHP

Basics of PHP

Arrays and Functions in PHP

Object Oriented PHP

Error and Exception Handling in PHP

PHP Filesystem

Session Handling in PHP

Objects and Databases in PHP

Object Tools and Variables

Constants and Operators in PHP

PHP Controls Structures

Functions in PHP

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