Regular Expressions MCQ question and answer with solution

1.
PHP has long supported two regular expression implementations known as _ and _.
1. Perl
2. PEAR
3. Pearl
4. POSIX

A. 1 and 2

B. 2 and 4

C. 1 and 4

D. 2 and 3

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2.
Which one of the following regular expression matches any string containing zero or one p?

A. p+

B. p*

C. P?

D. p#

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3.
[:alpha:] can also be specified as.

A. [A-Za-z0-9]

B. [A-za-z]

C. [A-z]

D. [a-z]

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4.
How many functions does PHP offer for searching strings using POSIX style regular expression?

A. 7

B. 8

C. 9

D. 10

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5.

What will be the output of the following PHP code?

<?php
$username = "jasoN";
if (ereg("([^a-z])",$username))
  echo "Username must be all lowercase!";
else
  echo "Username is all lowercase!";
?>

A. Error

B. Username must be all lowercase!

C. Username is all lowercase!

D. No Output is returned

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6.
POSIX implementation was deprecated in which version of PHP?

A. PHP 4

B. PHP 5

C. PHP 5.2

D. PHP 5.3

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7.
POSIX stands for

A. Portable Operating System Interface for Unix

B. Portable Operating System Interface for Linux

C. Portative Operating System Interface for Unix

D. Portative Operating System Interface for Linux

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8.

What will be the output of the following PHP code?

<?php
$text = "this istsome text thatnwe might like to parse.";
print_r(split("[nt]",$text));
?>

A. this is some text that we might like to parse.

B. Array ( [0] => some text that [1] => we might like to parse. )

C. Array ( [0] => this is [1] => some text that [2] => we might like to parse. )

D. [0] => this is [1] => some text that [2] => we might like to parse.

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9.
Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ?
1. fol
2. fool
3. fooool
4. fooooool

A. Only 1

B. 2 and 3

C. 1, 3 and 4

D. 1 and 4

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10.
Which among the following is/are not a metacharacter?
1. /a
2. /A
3. /b
4. /B

A. Only 1

B. 1 and 3

C. 2, 3 and 4

D. 2 and 4

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1.
PHP has long supported two regular expression implementations known as _ and _.
1. Perl
2. PEAR
3. Pearl
4. POSIX

Answer & Solution

2.
Which one of the following regular expression matches any string containing zero or one p?

Answer & Solution

3.
[:alpha:] can also be specified as.

Answer & Solution

4.
How many functions does PHP offer for searching strings using POSIX style regular expression?

Answer & Solution

5.
What will be the output of the following PHP code?

`<?php $username = "jasoN"; if (ereg("([^a-z])",$username)) echo "Username must be all lowercase!"; else echo "Username is all lowercase!"; ?>`

Answer & Solution

6.
POSIX implementation was deprecated in which version of PHP?

Answer & Solution

7.
POSIX stands for

Answer & Solution

8.
What will be the output of the following PHP code?

`<?php $text = "this istsome text thatnwe might like to parse."; print_r(split("[nt]",$text)); ?>`

Answer & Solution

9.
Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ?
1. fol
2. fool
3. fooool
4. fooooool

Answer & Solution

10.
Which among the following is/are not a metacharacter?
1. /a
2. /A
3. /b
4. /B

Answer & Solution

Regular Expressions MCQ question and answer with solution | PHP Programming

1. PHP has long supported two regular expression implementations known as _______ and _______. 1. Perl 2. PEAR 3. Pearl 4. POSIX

Answer & Solution

2. Which one of the following regular expression matches any string containing zero or one p?

Answer & Solution

3. [:alpha:] can also be specified as.

Answer & Solution

4. How many functions does PHP offer for searching strings using POSIX style regular expression?

Answer & Solution

5. What will be the output of the following PHP code? <?php $username = "jasoN"; if (ereg("([^a-z])",$username)) echo "Username must be all lowercase!"; else echo "Username is all lowercase!"; ?>

Answer & Solution

6. POSIX implementation was deprecated in which version of PHP?

Answer & Solution

7. POSIX stands for

Answer & Solution

8. What will be the output of the following PHP code? <?php $text = "this istsome text thatnwe might like to parse."; print_r(split("[nt]",$text)); ?>

Answer & Solution

9. Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ? 1. fol 2. fool 3. fooool 4. fooooool

Answer & Solution

10. Which among the following is/are not a metacharacter? 1. /a 2. /A 3. /b 4. /B

Answer & Solution

1.
PHP has long supported two regular expression implementations known as _ and _.
1. Perl
2. PEAR
3. Pearl
4. POSIX

2.
Which one of the following regular expression matches any string containing zero or one p?

3.
[:alpha:] can also be specified as.

4.
How many functions does PHP offer for searching strings using POSIX style regular expression?

5.
What will be the output of the following PHP code?

`<?php $username = "jasoN"; if (ereg("([^a-z])",$username)) echo "Username must be all lowercase!"; else echo "Username is all lowercase!"; ?>`

6.
POSIX implementation was deprecated in which version of PHP?

7.
POSIX stands for

8.
What will be the output of the following PHP code?

`<?php $text = "this istsome text thatnwe might like to parse."; print_r(split("[nt]",$text)); ?>`

9.
Which of the following would be a potential match for the Perl-based regular expression /fo{2,4}/ ?
1. fol
2. fool
3. fooool
4. fooooool

10.
Which among the following is/are not a metacharacter?
1. /a
2. /A
3. /b
4. /B