How can one prevent the browser from caching pages after a user logs in using PHP sessions?

To prevent the browser from caching pages after a user logs in using PHP sessions, you can use HTTP headers to control caching behavior. By sending appropriate cache-control headers, you can instruct the browser not to cache the pages that should only be accessible when a user is logged in. 

<?php
session_start();

// Prevent caching of pages after user logs in
header("Cache-Control: no-cache, no-store, must-revalidate"); // HTTP 1.1
header("Pragma: no-cache"); // HTTP 1.0
header("Expires: 0"); // Proxies

// Your login logic here
?>

Keywords

PHP sessions browser caching cache control session_start() header()

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