Var "GET" In PHP

$HTTP_GET_VARS contains the same initial information, but is not a superglobal. (Note that 

$HTTP_GET_VARS and $_GET are different variables and that PHP handles them as such)

Example #1 $_GET example

<?phpecho 'Hello ' . htmlspecialchars($_GET["name"]) . '!';?>

Assuming the user entered http://example.com/?name=Hannes

The above example will output something similar to:

Hello Hannes!