What is the default behavior of PHP sessions when a user is inactive for a certain period of time?

By default, PHP sessions will expire after a certain period of inactivity, which is defined by the session.gc_maxlifetime setting in the php.ini file. To prevent sessions from expiring too quickly, you can adjust this setting to a longer duration. Additionally, you can use session_regenerate_id() to refresh the session ID and prevent session fixation attacks. 

// Increase the session timeout to 1 hour (3600 seconds)
ini_set('session.gc_maxlifetime', 3600);

// Refresh the session ID to prevent session fixation attacks
session_regenerate_id();

Keywords

PHP sessions default behavior inactive period of time session timeout

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