- Part 1: Server Output
- Part 2: $_SERVER
- Part 3: $_GET, $_PUT, and $_REQUEST
- Part 4: $_COOKIE
- Part 5: $_SESSION
PHP is a programming language frequently used for server-side web development.
$_GET, $_PUT, and $_REQUEST
Like $_SERVER, there are two other superglobals for accessing content sent to the server $_GET and $_PUT.
Depending on the HTTP method used by the client, data will either be in the $_GET or $_PUT variable.
Data sent via the GET method is encoded as part of the requesting URL. Anything sent to the server using this method will be found in the $_GET variable on the server.
Data sent via the PUT method is encoded in the body of the content rather than part of the requesting URL. Similar to $_GET, any data sent via this method will be found in the $_PUT variable.
$_REQUEST as combination of $_GET and $_PUT
Introduced in PHP 4.1.0, the $_REQUEST superglobal variable contains all data from the globals $_GET, $_PUT, and $_COOKIE. While a separate variable, it can be used a shorthand for accessing data passed via either $_GET or $_PUT methods.