What are some recommended resources for learning about passing data between PHP pages securely?

When passing data between PHP pages securely, it is important to use encryption techniques to prevent data interception or tampering. One common method is to use PHP sessions with HTTPS to securely transfer sensitive data between pages.

<?php
session_start();

// Set data in session variable
$_SESSION['secure_data'] = 'sensitive information';

// Redirect to another page
header('Location: another_page.php');
exit;
?>