Figure 2: PHP's default associative arrays

Array Name	Description

$_GLOBALS	Reference to all globally scoped variables, 

	indexed by variable name

$_COOKIE	List of HTTP cookies indexed by cookie name

$_GET and $_POST	HTTP request parameters

$_FILES	Information about uploaded files

$_SERVER	HTTP request information, such as query 		string, remote user, request method, and 

	content type

$_ENV	Local system environment variables