Functions to Handle PHP Session Inactivity and Session Timeouts in PHP

Below are two MIT Licensed functions to Handle PHP Session Inactivity and Session Timeouts in PHP.

Destroys the session of a user after an amount of time.

<?php
/* 
 * -------------------------------------------------------
 * sessionTimeout
 * -------------------------------------------------------
 * @Version: 1.0.0
 * @Author:  FireDart
 * @Link:    http://firedartstudios.com/
 * @GitHub:  https://github.com/FireDart/snippets/PHP/Session
 * @License: The MIT License (MIT)
 * 
 * Kills the session of a user after an amount of time.
 * 
 * -------------------------------------------------------
 * Requirements
 * -------------------------------------------------------
 * PHP 5.4.0+
 * 
 * -------------------------------------------------------
 * Usage
 * -------------------------------------------------------
 * session_start();
 * sessionTimeout(10, "logout.php");
 *                 ^       ^
 *    10 Minutes - |       | - Redirect location
 */
/* 
 * sessionTimeout
 * 
 * Kills a session after a specific amount of time and 
 * redirects user.
 * 
 * @param int $minutes How many minutes till the session 
 * 					   timesout
 * @param str $redirect Where should the function redirect 
 * 						after timeout
 * @return mixed Will return errors if any, otherwise nothing
 */
function sessionTimeout($minutes, $redirect = null) {
    try {
        // Check if a session has even been started
        if(session_id() == '') {
            throw new Exception('No session has been started, please add session_start().');
        }
        // Check if timeout is set & is an integer
        if(!isset($minutes) || !is_int($minutes)) {
            throw new Exception('No timeout amount set or expects integer.');
        }
        // If no redirect is set use the current page
        if(!isset($redirect)) {
            $redirect = $_SERVER['REQUEST_URI'];
        }
        // If timeout session is not set, create it
        if(!isset($_SESSION['timeout'])) {
            $_SESSION['timeout'] = time();
        }
        // Calculate how many seconds
        $inactive = 60 * $minutes;
        // Calculate current inactive session
        $currentSession = time() - $_SESSION['timeout'];
        // If current session is longer then timeout destroy session & redirect
        if($currentSession > $inactive) {
            session_destroy();
            header("Location: " . $redirect);
        }
    } catch(Exception $e) {
        echo $e->getMessage();
    }
}

Destroys the session of a user after a certain amount of time being inactive.

<?php
/* 
 * -------------------------------------------------------
 * sessionInactivity
 * -------------------------------------------------------
 * @Version: 1.0.0
 * @Author:  FireDart
 * @Link:    http://firedartstudios.com/
 * @GitHub:  https://github.com/FireDart/snippets/PHP/Session
 * @License: The MIT License (MIT)
 * 
 * Kills the session of a user after a continues amount of 
 * time being inactive.
 * 
 * -------------------------------------------------------
 * Requirements
 * -------------------------------------------------------
 * PHP 5.4.0+
 * 
 * -------------------------------------------------------
 * Usage
 * -------------------------------------------------------
 * session_start();
 * sessionTimeout(10, "logout.php");
 *                 ^       ^
 *    10 Minutes - |       | - Redirect location
 */
/* 
 * sessionInactivity
 * 
 * Kills the session of a user after a continues amount of 
 * time being inactive.
 * 
 * @param int $minutes How many minutes till the session 
 * 					   timesout
 * @param str $redirect Where should the function redirect 
 * 						after timeout
 * @return mixed Will return errors if any, otherwise nothing
 */
function sessionInactivity($minutes, $redirect = null) {
    try {
        // Check if a session has even been started
        if(session_id() == '') {
            throw new Exception('No session has been started, please add session_start().');
        }
        // Check if timeout is set & is an integer
        if(!isset($minutes) || !is_int($minutes)) {
            throw new Exception('No timeout amount set or expects integer.');
        }
        // If no redirect is set use the current page
        if(!isset($redirect)) {
            $redirect = $_SERVER['REQUEST_URI'];
        }
        // If timeout session is not set, create it
        $_SESSION['timeout'] = time();
        // Calculate how many seconds
        $inactive = 60 * $minutes;
        // Calculate current inactive session
        $currentSession = time() - $_SESSION['timeout'];
        // If current session is longer then timeout destroy session & redirect
        if($currentSession > $inactive) {
            session_destroy();
            header("Location: " . $redirect);
        }
    } catch(Exception $e) {
        echo $e->getMessage();
    }
}