In PHP, what are the benefits of storing arrays in sessions instead of passing them as parameters in URLs or forms?

Storing arrays in sessions instead of passing them as parameters in URLs or forms helps to maintain data integrity and security. It prevents users from tampering with the data by manipulating URLs or form submissions. Additionally, storing arrays in sessions allows for easier access to the data across different pages without the need to constantly pass them as parameters.

// Start the session
session_start();

// Store an array in the session
$_SESSION['user_data'] = array(
    'username' => 'john_doe',
    'email' => 'john@example.com',
    'role' => 'admin'
);

// Retrieve the array from the session
$user_data = $_SESSION['user_data'];

// Access individual elements from the array
echo $user_data['username'];
echo $user_data['email'];
echo $user_data['role'];