PHP MCQ - Loops in PHP, Working with Forms, PHP Functions

1. Which PHP loop always executes at least once?

a) for
b) while
c) do-while
d) foreach

2. Which loop is best for iterating over arrays?

a) while
b) for
c) foreach
d) do-while

3. How do you stop a loop immediately in PHP?

a) exit
b) return
c) break
d) stop

4. What does the continue keyword do in a loop?

a) Stops the loop
b) Skips the current iteration
c) Exits the program
d) Repeats from the start

5. Which loop checks the condition before running the block?

a) do-while
b) foreach
c) while
d) none

6. Which superglobal is used to collect data sent by a POST form?

a) $_GET
b) $_POST
c) $_DATA
d) $_FORM

7. Which method is safer for sending passwords?

a) GET
b) POST
c) REQUEST
d) SESSION

8.How to access the value of an input field named “email” using POST?

a) $_GET["email"]
b) $_FORM["email"]
c) $_POST["email"]
d) $_EMAIL["email"]

9. Which function converts HTML special characters to safe text?

a) htmlentities()
b) htmlspecialchars()
c) clean_input()
d) remove_html()

10. Which function checks if a field is empty?

a) is_blank()
b) isempty()
c) check_empty()
d) empty()

11. Which keyword is used to define a function in PHP?

a) method
b) function
c) def
d) define

12. Which function prints readable array information?

a) show()
b) print_r()
c) array_log()
d) display()

13. What is the default return value of a PHP function if none is given?

a) 0
b) false
c) null
d) undefined

14. Which function counts elements in an array?

a) total()
b) count()
c) length()
d) size()

15. What is the use of the global keyword in a function?

a) Define a function globally
b) Access outside variables
c) Return global value
d) None

16. Can a PHP function call itself?

a) No
b) Yes, it's called recursion
c) Only in OOP
d) Only using include

17. What does the return statement do in a function?

a) Stop the script
b) End the loop
c) Send a value back
d) Restart the function

18. Which is a built-in PHP string function?

a) textLength()
b) str_count()
c) strlen()
d) getText()

19. What is the output of strlen("PHP")?

a) 2
b) 3
c) 4
d) 5

20. Which function checks if a variable is a number?

a) is_text()
b) is_numeric()
c) is_number()
d) is_string()

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