Super Php Test - 86+ MCQs: PHP test: Evaluate Your Programming Skills with PHP Questions and Answers

1. What is the purpose of the `array_diff()` function in PHP?

To find the difference between two arrays

To merge two arrays

To sort an array

To filter an array

2. What is the purpose of the `session_regenerate_id()` function in PHP?

To start a new session

To destroy a session

To regenerate the session ID

To retrieve session data

3. How do you check if a string starts with a specific substring in PHP?

str_starts($string, $substring)

starts_with($string, $substring)

substr($string, 0, strlen($substring)) == $substring

strpos($string, $substring) === 0

4. How can you check if a variable is an array in PHP?

Use the `isarray()` function

Use the `isArray()` function

Use the `typeof` operator

Use the `is_array()` function

5. How do you check if a file exists in PHP?

file_exists()

exists(file)

check_file(file)

file() != null

6. What is the purpose of the `json_encode()` function in PHP?

To decode a JSON string

To encode a PHP array into a JSON string

To check if a string is valid JSON

To compress a JSON file

7. How do you check if a variable is empty in PHP?

empty()

is_empty()

is_null()

null()

8. What is the purpose of the `array` keyword in PHP?

To create a function

To define a loop

To declare an array

To include external files

9. How can you implement lazy loading in PHP?

By using the `lazy_load()` function

By delaying the instantiation of an object until it is actually needed

By using the `autoload` feature

Lazy loading is not possible in PHP

10. What is the purpose of the `echo` statement in PHP?

To print text to the console

To output data to a file

To display content on a webpage

To define a constant

11. What is the purpose of the `switch` statement in PHP?

To create a loop

To make decisions based on conditions

To define a function

To simplify complex `if` conditions

12. What is the purpose of the `file_get_contents()` function in PHP?

To read a file into a string

To write data to a file

To check if a file exists

To delete a file

13. In PHP, what does the `use` keyword do in anonymous functions?

To import a namespace

To define a closure

To declare a variable

To import variables from the parent scope

14. How can you implement method chaining in PHP?

By using the `chain()` method

By returning the object instance in each method

By using the `method_chain()` function

Method chaining is not possible in PHP

15. What is the purpose of the function `mysqli_connect()`?

To connect to a MySQL database

To connect to a SQLite database

To connect to a MongoDB database

To connect to a PostgreSQL database

16. Which function is used to redirect the browser to another location in PHP?

redirect()

header()

location()

go()

17. In PHP, what does the `ReflectionClass` class do?

It provides reflection for functions

It provides reflection for classes

It provides reflection for objects

It provides reflection for interfaces

18. What is the purpose of the `foreach` loop in PHP?

To create an infinite loop

To iterate over items in an array or collection

To perform a conditional loop

To define a function

19. What is the correct way to represent a single-line comment in PHP?

// This is a comment

# This is a comment

-- This is a comment

/* This is a comment */

20. In PHP, what is the use of the `yield` keyword?

To stop the execution of a function

To resume the execution of a function

To generate a value in a generator function

To throw an exception

21. What is the purpose of the `iterator_to_array()` function in PHP?

To convert an array to an iterator

To convert an iterator to an array

To create a new iterator

To delete an iterator

22. How do you comment out a single line in PHP?

// This is a comment

# This is a comment

-- This is a comment

/* This is a comment */

23. What is the purpose of the `array_map()` function in PHP?

To merge two arrays

To apply a function to all items in an input array

To filter items in an array

To check if an array is empty

24. Which function is used to get the current date and time in PHP?

current_datetime()

now()

date()

get_date()

25. What is the purpose of the `glob()` function in PHP?

To create a global variable

To retrieve an array of file names that match a pattern

To generate a random number

To define a global function

26. What is the purpose of the `continue` statement in PHP?

To end a loop prematurely

To start a new block of code

To skip the rest of the code in a loop and start the next iteration

To include external files

27. What is the correct way to start a session in PHP?

session.create()

start_session()

session_start()

init_session()

28. What is the purpose of the `if` statement in PHP?

To create a loop

To make decisions based on conditions

To define a function

To include external files

29. How do you handle file uploads in PHP?

Use the `upload_file()` function

Access the file using $_FILES superglobal

Use the `move_uploaded_file()` function

Enable file uploads in php.ini

30. What is the purpose of the `__sleep()` magic method in PHP?

To serialize an object

To unserialize an object

To prepare an object for sleep mode

To wake up an object from sleep mode

31. In PHP, what is the use of the `Throwable` interface?

To catch exceptions

To define a new exception class

To implement a custom exception handler

To handle fatal errors

32. How can you prevent a class from being inherited in PHP?

Use the `final` keyword before the class declaration

Use the `sealed` keyword before the class declaration

Use the `static` keyword before the class declaration

Use the `private` keyword before the class declaration

33. What is the purpose of the `__construct()` method in a PHP class?

To create an instance of the class

To initialize class properties

To define a destructor

To access static members

34. How do you comment out a single line in PHP?

// This is a comment

# This is a comment

-- This is a comment

/* This is a comment */

35. How can you prevent a PHP script from timing out?

Increase the `max_execution_time` directive in php.ini

Use the `set_time_limit()` function

Both A and B

There is no way to prevent script timeouts

36. What is the purpose of the `__invoke()` magic method in PHP?

To call an object as a function

To define a new class

To create a new instance of a class

To destroy an object

37. What is the purpose of the `ob_start()` function in PHP?

To start a new session

To begin output buffering

To close output buffering

To output data to the browser

38. How do you include a trait in a PHP class?

Using the `implements` keyword

Using the `use` keyword

Using the `extends` keyword

Using the `trait` keyword

39. How can you handle file uploads in PHP securely?

Check the file extension

Check the file size

Use the `move_uploaded_file()` function

All of the above

40. What is the purpose of the `FILTER_VALIDATE_EMAIL` filter in PHP?

To validate email addresses

To filter and sanitize email addresses

To validate and sanitize email addresses

To filter email addresses

41. How can you declare a constant in a class in PHP?

Using the `var` keyword

Using the `const` keyword

Using the `define` function

Using the `constant` function

42. Which function is used to display text in PHP?

print()

echo()

display()

show()

43. What is the purpose of the `shuffle()` function in PHP?

To reverse the order of elements in an array

To sort an array in ascending order

To randomize the order of elements in an array

To filter elements in an array

44. What is the purpose of the magic constant `__DIR__` in PHP?

To get the parent directory of the current file

To get the absolute path of the current directory

To define a new directory

To check if a directory exists

45. How do you define a constant in PHP?

define constant_name value

constant constant_name value

const constant_name = value

set constant_name = value

46. What is the difference between `==` and `===` operators in PHP?

Both are used for equality comparison

`==` compares values and ignores data types, `===` compares both values and data types

`===` compares values and ignores data types, `==` compares both values and data types

`==` is used for strict comparison, `===` is used for loose comparison

47. What is the purpose of the `header('Content-Type: application/json')` function in PHP?

To set the page title

To send a JSON response

To redirect the page

To include an external script

48. Which function is used to get the length of a string in PHP?

len()

count()

strlen()

length()

49. What is the purpose of the `hash_pbkdf2()` function in PHP?

To generate a hash using PBKDF2

To verify a password using PBKDF2

To encrypt data using PBKDF2

To decrypt data using PBKDF2

50. Which function is used to get the length of a string in PHP?

len()

count()

strlen()

length()

PHP MCQ Test 1