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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.

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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 9 of 10

Q81.
Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ?

i) fol
ii) fool
iii) fooool
iv) fooooool
Discuss
Answer: (b).ii) and iii)
Q82.
Which among the following is/are not a metacharacter?

i) \a
ii) \A
iii) \b
iv) \B
Discuss
Answer: (a).Only i)
Q83.
How many functions does PHP offer for searching and modifying strings using Perl-compatible regular expressions.

a.

7

b.

8

c.

9

d.

10

Discuss
Answer: (b).8
Q84.
What will be the output of the following PHP code?
<?php
    $foods = array("pasta", "steak", "fish", "potatoes");
    $food = preg_grep("/^s/", $foods);
    print_r($food);
    ?>
Discuss
Answer: (c).Array ( [1] => steak )
Q85.
Say we have two compare two strings which of the following function/functions can you use?

i) strcmp()
ii) strcasecmp()
iii) strspn()
iv) strcspn()
Discuss
Answer: (d).All of the mentioned
Q86.
Which one of the following functions will convert a string to all uppercase?
Discuss
Answer: (a).strtoupper()
Q87.
What will be the output of the following PHP code?
<?php
    $title = "O'malley wins the heavyweight championship!";
    echo ucwords($title);
    ?>
Discuss
Answer: (d).o’malley wins the heavyweight championship!
Q88.
What will be the output of the following PHP code?
<?php
    echo str_pad("Salad", 5)." is good.";
    ?>
Discuss
Answer: (d).Salad is good
Q89.
Which one of the following functions can be used to concatenate array elements to form a single delimited string?
Discuss
Answer: (b).implode()
Q90.
Which one of the following functions finds the last occurrence of a string, returning its numerical position?
Discuss
Answer: (d).strrpos()
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