How can a PHP session be automatically destroyed after a certain time of inactivity?

To automatically destroy a PHP session after a certain time of inactivity, you can set a timeout period for the session. This can be achieved by setting the session.gc_maxlifetime directive in the php.ini file or by using the session_set_cookie_params() function in your PHP code. 

// Set session timeout to 30 minutes
ini_set('session.gc_maxlifetime', 1800);

// Start the session
session_start();

// Check if last activity timestamp is set
if (isset($_SESSION['last_activity']) && (time() - $_SESSION['last_activity'] > 1800)) {
    // Destroy the session if inactive for more than 30 minutes
    session_unset();
    session_destroy();
}

// Update last activity timestamp
$_SESSION['last_activity'] = time();

Keywords

PHP session destroy inactivity automatic

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