Session Handling Функции
- Введение
- Installing/Configuring
- Примеры
- Sessions and security
- Sessions Функции
- session_cache_expire — Return current cache expire
- session_cache_limiter — Get and/or set the current cache limiter
- session_commit — Alias of session_write_close
- session_decode — Decodes session data from a string
- session_destroy — Destroys all data registered to a session
- session_encode — Encodes the current session data as a string
- session_get_cookie_params — Get the session cookie parameters
- session_id — Get and/or set the current session id
- session_is_registered — Find out whether a global variable is registered in a session
- session_module_name — Get and/or set the current session module
- session_name — Get and/or set the current session name
- session_regenerate_id — Update the current session id with a newly generated one
- session_register — Register one or more global variables with the current session
- session_save_path — Get and/or set the current session save path
- session_set_cookie_params — Set the session cookie parameters
- session_set_save_handler — Sets user-level session storage functions
- session_start — Initialize session data
- session_unregister — Unregister a global variable from the current session
- session_unset — Free all session variables
- session_write_close — Write session data and end session
Коментарии
There is a nuance we found with session timing out although the user is still active in the session. The problem has to do with never modifying the session variable.
The GC will clear the session data files based on their last modification time. Thus if you never modify the session, you simply read from it, then the GC will eventually clean up.
To prevent this you need to ensure that your session is modified within the GC delete time. You can accomplish this like below.
<?php
if( !isset($_SESSION['last_access']) || (time() - $_SESSION['last_access']) > 60 )
$_SESSION['last_access'] = time();
?>
This will update the session every 60s to ensure that the modification date is altered.