superglobals

Question 1

$GLOBALS

Answer 1

All variables that are currently defined in the global scope of the script. The variable names are the keys of the array.

Question 2

$_SERVER

Answer 2

Information such as headers, paths, and script locations. The entries in this array are created by the web server and there is no guarantee that every web server will provide any or all of these.

Question 3

$_GET

Answer 3

Variables passed to the current script via the HTTP GET method.

Question 4

$_POST

Answer 4

Variables passed to the current script via the HTTP POST method.

Question 5

$_FILES

Answer 5

Items uploaded to the current script via the HTTP POST method.

Question 6

$_COOKIE

Answer 6

Variables passed to the current script via HTTP cookies.

Question 7

$_SESSION

Answer 7

Session variables available to the current script.

Question 8

$_REQUEST

Answer 8

Contents of information passed from the browser; by default, $_GET, $_POST, and $_COOKIE.

Question 9

$_ENV

Answer 9

Variables passed to the current script via the environment method.

Question 10

htmlentities

Answer 10

converts all characters into HTML entities. To access $_SERVER for example the syntax is:
$came_from = htmlentites($_SERVER[‘HTTP_REFERER’]);