PHP - Comments

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1. Which of the following is correct to add a comment in php?

& …… &

// ……

/* …… */

Both (b) and (c)

Difficulty

1000

very low

2. We can use _________ to comment a single line? 1. /? 2. // 3. # 4. /* */

Only 2

1, 3 and 4

2, 3 and 4

Both 2 and 4

Difficulty

1400

low

3. Single line comments can be placed in PHP script by using which symbol?

Both A. and B.

Difficulty

1700

low

4. Multi-line comments can be written within the ____.

// and //

## and ##

/* and */

/// and ///

Difficulty

1700

low

5. What is the purpose of comments in PHP?

To include external files

To enhance security

To document and explain code

To create dynamic content

Difficulty

1300

low

6. What is the syntax for a multi-line comment in PHP?

# This is a comment

/* This is a comment */

// This is a comment

Difficulty

1600

low

7. Which of the following statements is true about comments in PHP?

Comments are executed by the PHP interpreter

Comments are visible in the final output of the script

Comments are ignored by the PHP interpreter

Comments can only be added to the beginning of a script

Difficulty

1400

low

8. What is the purpose of adding comments to code?

To slow down code execution

To make code more difficult to read

To improve code readability and maintainability

To replace actual code statements

Difficulty

1600

low

9. Which symbol is used to indicate a single-line comment in PHP?

Difficulty

1200

low

10. What is the significance of docblock comments in PHP?

They are used to execute code

They define the start and end of a PHP script

They provide documentation for functions, classes, and methods

They indicate a block of commented-out code

Difficulty

2400

medium

11. Can comments be nested in PHP?

Yes, using /* */

Yes, using

No, comments cannot be nested

Yes, using #

Difficulty

3400

high

12. What is the purpose of adding comments within a loop or conditional statement?

To create syntax errors

To slow down code execution

To improve code readability and explain the logic

To disable the loop or conditional statement

Difficulty

3200

high

13. Which of the following is a valid way to comment out multiple lines in PHP?

# This is a comment

// This is a comment

/* This is a comment */

Difficulty

1600

low

14. What is the purpose of using inline comments in PHP?

To add decorative elements to the code

To improve code execution speed

To provide explanations or annotations within the code

To execute specific code blocks conditionally

Difficulty

2000

low

15. In PHP, what is the purpose of using docblock comments before a function definition?

To disable the function temporarily

To provide information about the function for documentation generators

To indicate the end of the function

To mark the function as deprecated

Difficulty

1800

low

16. What is the purpose of a shebang (#!) in PHP scripts?

To indicate the start of a comment block

To specify the PHP version to be used for the script

To define the character encoding for the script

Shebang is not used in PHP scripts

Difficulty

2200

medium

17. How can you prevent a specific line of code from being executed without removing it in PHP?

Add a // before the line

Enclose the line in /* */

Use # at the beginning of the line

All of the above

Difficulty

2200

medium

18. Which function is commonly used to output text along with comments in PHP?

print_r()

echo()

printf()

var_dump()

Difficulty

3600

high

19. What is the purpose of a shebang (#!) in PHP scripts?

To include external scripts

To define the character encoding

To specify the PHP version

To indicate the start of a comment block

Difficulty

4200

very high

20. Which of the following is NOT a type of comment in PHP?

Single-line comment

Multi-line comment

Docblock comment

Dynamic comment

Difficulty

2600

medium

21. When using the # symbol for comments in PHP, what should be placed after the symbol?

Space

Tab

Exclamation mark (!)

Nothing, the rest of the line is a comment

Difficulty

3200

high

22. What is the purpose of the /* !... */ syntax in PHP comments?

To create a special type of comment

To disable code temporarily

To indicate deprecated code

There is no such syntax in PHP comments

Difficulty

3200

high

23. How can you comment out a large block of code in PHP?

Using /* ... */

Using // ...

Using

Using comment-out { ... }

Difficulty

1200

low

24. Which of the following statements about comments in PHP is false?

Comments are essential for code readability and maintenance

Comments can be used to disable portions of code temporarily

Comments are always executed by the PHP interpreter

Comments are ignored during the execution of the script

Difficulty

2200

medium

Ehsan Arvacheh

1026 points

Ovi Baidya

1019 points

Comments

Want to challenge your knowledge?

Question Bank

1. Which of the following is correct to add a comment in php?

2. We can use _________ to comment a single line? 1. /? 2. // 3. # 4. /* */

3. Single line comments can be placed in PHP script by using which symbol?

4. Multi-line comments can be written within the ____.

5. What is the purpose of comments in PHP?

6. What is the syntax for a multi-line comment in PHP?

7. Which of the following statements is true about comments in PHP?

8. What is the purpose of adding comments to code?

9. Which symbol is used to indicate a single-line comment in PHP?

10. What is the significance of docblock comments in PHP?

11. Can comments be nested in PHP?

12. What is the purpose of adding comments within a loop or conditional statement?

13. Which of the following is a valid way to comment out multiple lines in PHP?

14. What is the purpose of using inline comments in PHP?

15. In PHP, what is the purpose of using docblock comments before a function definition?

16. What is the purpose of a shebang (#!) in PHP scripts?

17. How can you prevent a specific line of code from being executed without removing it in PHP?

18. Which function is commonly used to output text along with comments in PHP?

19. What is the purpose of a shebang (#!) in PHP scripts?

20. Which of the following is NOT a type of comment in PHP?

21. When using the # symbol for comments in PHP, what should be placed after the symbol?

22. What is the purpose of the /* !... */ syntax in PHP comments?

23. How can you comment out a large block of code in PHP?

24. Which of the following statements about comments in PHP is false?

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