Are there any best practices for securely passing hidden values in PHP forms?

When passing hidden values in PHP forms, it is important to ensure that sensitive information is not exposed to users or easily tampered with. One common best practice is to use PHP sessions to store and retrieve hidden values securely. By storing sensitive data in session variables, you can prevent it from being manipulated by users or intercepted during form submission.

<?php
session_start();

// Set the hidden value in a session variable
$_SESSION['hidden_value'] = 'your_hidden_value';

// Retrieve the hidden value from the session
$hidden_value = $_SESSION['hidden_value'];

// Use the hidden value in your form
echo '<input type="hidden" name="hidden_field" value="' . $hidden_value . '">';
?>