t3lib_div::fixed_lgd_cs($sessionTime);
$sessionTime = 3600; // 1 hour t3lib_div::fixed_lgd_cs($sessionTime); if (isset($_SESSION['lastActivity']) && (time() - $_SESSION['lastActivity'] > $sessionTime)) { //user has been inactive for too long session_unset(); session_destroy(); } $_SESSION['lastActivity'] = time(); // update last activity timeIn this example, we are setting the login duration for 1 hour. Then, we are checking if the user has been inactive for more than an hour. If so, we are destroying the session and unsetting all session variables. Overall, the fixed_lgd_cs function is used to mitigate cross site scripting (XSS) attacks by setting a fixed login duration for the current session. This function is part of the TYPO3 CMS package library t3lib_div.