PHP Superglobals Quiz

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Question 1

What is the purpose of the $GLOBALS superglobal in PHP?

  • To store session data

  • To access global variables from anywhere in the script

  • To manage uploaded files

  • To handle cookies

Question 2

Which PHP superglobal holds information about headers, paths, and script locations?

  • $_COOKIE

  • $_SESSION

  • $_SERVER

  • $_FILES

Question 3

What is the main difference between $_POST and $_GET superglobals?

  • $_POST sends data via URL; $_GET sends data via body

  • $_POST hides form data; $_GET appends data to the URL

  • $_POST is slower than $_GET

  • $_POST can only send numeric data; $_GET sends text

Question 4

Which superglobal is used to collect form data submitted via HTTP POST method?

  • $_GET

  • $_POST

  • $_REQUEST

  • $_SESSION

Question 5

How does PHP allow access to global variables inside functions without using the global keyword?

  • Using $_POST

  • Using $GLOBALS

  • Using $_SERVER

  • Using $_SESSION

Question 6

What type of data does $_FILES Superglobal handle?

  • Session data

  • Server environment variables

  • Uploaded file information

  • URL parameters

Question 7

Which superglobal variable stores cookie information sent by the browser?

  • $_SESSION

  • $_COOKIE

  • $_REQUEST

  • $_ENV

Question 8

How do you retrieve environment variables in PHP?

  • Using $_ENV

  • Using $_SERVER

  • Using $_SESSION

  • Using $_COOKIE

Question 9

Can $_SESSION be accessed without starting a session in PHP?

  • Yes, always accessible

  • No, must call session_start() first

  • Only in command-line scripts

  • Only when cookies are enabled

Question 10

What happens if you use $_SERVER['HTTP_HOST'] in a PHP script?

  • Returns the server's IP address

  • Returns the Host header, usually the domain name of the request

  • Returns the script file name

  • Returns the browser type

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