What are the advantages of using SESSION variables over POST or GET parameters for storing user input in PHP?

Using SESSION variables to store user input in PHP provides several advantages over using POST or GET parameters. SESSION variables are stored on the server-side, making them more secure as they cannot be easily tampered with by the user. Additionally, SESSION variables can persist across multiple pages, allowing the user input to be accessed throughout the user's session without the need to continuously pass it through forms or URLs. Lastly, SESSION variables can store more complex data structures compared to POST or GET parameters, making them more versatile for storing user input.

// Start the session
session_start();

// Store user input in a SESSION variable
$_SESSION['user_input'] = $_POST['user_input'];

// Access the user input from the SESSION variable
$user_input = $_SESSION['user_input'];

// Destroy the session when it's no longer needed
session_destroy();