Extend WordPress Auto Logout Period

The following code lets you extend how long it takes before WordPress automatically logs you out of the admin area. Add this code to your theme’s functions.php file:

function keep_me_logged_in_for_1_year( $expirein ) {
   return 31556926; // 1 year in seconds
}
add_filter( 'auth_cookie_expiration', 'keep_me_logged_in_for_1_year' );

For more security tips, see Hardening WordPress Security.