Predefined Variables

Question 1

What are superglobals?

Answer 1

Built-in variables that are always available in all scopes.

Question 2

What is $GLOBALS?

Answer 2

It references all variables available in global scope.

Question 3

What is $_SERVER?

Answer 3

Server and execution environment information.

Question 4

What is $_ENV?

Answer 4

Environment variables.

Question 5

What is $php_errormsg?

Answer 5

The previous error message.

Question 6

What is $argc?

Answer 6

The number of arguments passed to the script.

Question 7

What is $argv?

Answer 7

An array of arguments passed to the script.