Guided Notes
Superglobals & Form Handling
$_GET, $_POST, $_SERVER and friends, processing forms, validating and sanitizing input, and preventing XSS.
Superglobals
Slide 1 / 5| Superglobal | Holds |
|---|---|
| $_GET | Query-string values: page.php?id=5 |
| $_POST | Form fields sent with method="post" |
| $_REQUEST | GET + POST + cookies (avoid — ambiguous) |
| $_SERVER | Request info: REQUEST_METHOD, HTTP_HOST, REMOTE_ADDR |
| $_FILES | Uploaded files |
| $_COOKIE / $_SESSION | Cookies / session data |
| $_ENV / $GLOBALS | Environment / all global variables |