php set session expiration code example

Example 1: php expire a session

//Ending a php session after 30 minutes of inactivity
$minutesBeforeSessionExpire=30;
if (isset($_SESSION['LAST_ACTIVITY']) && (time() - $_SESSION['LAST_ACTIVITY'] > ($minutesBeforeSessionExpire*60))) {
    session_unset();     // unset $_SESSION   
    session_destroy();   // destroy session data  
}
$_SESSION['LAST_ACTIVITY'] = time(); // update last activity

Example 2: default time of session in php

24 minutes
It depends on the server configuration or the relevant directives session. gc_maxlifetime in php. ini . Typically the default is 24 minutes (1440 seconds), but your webhost may have altered the default to something else