Test Your Skills with the Ultimate PHP Quiz!

bobbyknuckles

Created 6/29/2024

Q & A

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Sources

https://docs.google.com/file/d/0Bzii_PqKSu6FMHFrdndReHVGSjQ/view?resourcekey=0-rzCCNjf-T-BkMdiyxsIBjQ

Are you a master of PHP? Show off your advanced knowledge with this challenging quiz!

1. Which function is used to start a session in PHP?

session_open()

session_start()

session_begin()

session_init()

2. Which keyword is used to create a constant in PHP?

define

const

permanent

static

3. What is the difference between include and require in PHP?

include treats them as errors, require treats them as warnings

require treats them as errors, include treats them as warnings

There is no difference

include is only for HTML files

4. Which filter is used to validate an email address with the filter_var() function?

FILTER_VALIDATE_EMAIL

FILTER_SANITIZE_EMAIL

FILTER_VALIDATE_URL

FILTER_VALIDATE_STRING

5. Which function is used to perform a case-insensitive string comparison?

strcmp()

strcasecmp()

strcasecomp()

strcomp()

6. What is the purpose of the 'final' keyword in PHP?

To declare a constant

To prevent class inheritance

To define a nullable type

To specify strict type mode

7. How can one access the query parameters passed in the URL within your PHP script?

$_URL

$_QUERY

$_GET

$_PARAMS

8. What is the correct way to connect to a MySQL database using PDO?

new PDO('mysql:host=hostname', 'username', 'password')

new PDO('mysql-db=hostname', 'username', 'password')

connect_to_mysql('mysql:hostname', 'username', 'password')

connect('mysql:hostname', 'username', 'password')

9. What function is used to create a directory in PHP?

create_dir()

mkdir()

make_dir()

dir_create()

10. Which function converts special characters to HTML entities?

htmlentities()

htmlspecialchars()

htmlparse()

htmlencode()

11. What will the function `empty()` return if the variable contains value 0?

false

true

null

12. Which type hint ensures that you can only pass an array to a PHP function?

array()

array

list

[]

13. What is the parent class for all exception handling classes in PHP?

Exception

Error

RuntimeError

Throwable

14. Which magic method is used to initialize an object in a class?

__init()

__init__()

__construct()

__initialize()

15. Which method is used to remove whitespace (or other characters) from the beginning and end of a string?

trim()

strip()

remove_whitespace()

clean()

16. What is the correct way to add 1 to the $count variable in PHP?

$count =+ 1

$count ++1

$count += 1

$count = 1+

17. Which method in PHP is used to write content to a file?

open_file()

write_file()

file_write()

fwrite()

18. Which of these functions checks if a file exists?

file_check()

file_exists()

is_existing_file()

check_file()

19. How do you access a class constant from outside the class?

ClassName<CONSTANT_NAME>

ClassName::CONSTANT_NAME

ClassName->CONSTANT_NAME

ClassName::CONSTANTNAME()

20. Which function is used to get the length of an array?

count()

length()

array_length()

size()

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