/**
* Garbage collector (do nothing as redis takes care about deletion of expired keys)
*
* @param int $max_lifetime session lifetime
*
* @return boolean always true
*/
public function gc($max_lifetime)
{
// Move expired sessions to sessions storage
$session_ids = array_map(function ($key) {
return substr($key, strrpos($key, ':') + 1);
}, $this->query('keys', $this->id('*')));
if (!empty($session_ids)) {
foreach ($session_ids as $sess_id) {
$session = $this->query('hGetAll', $this->id($sess_id));
if (empty($session) || $session['expiry'] < TIME) {
if (!empty($session['data'])) {
Session::expire($sess_id, $session);
}
$this->delete($sess_id);
}
}
}
return true;
}
/**
* Garbage collector - move expired sessions to session archive
*
* @param int $max_lifetime session lifetime
*
* @return boolean always true
*/
public function gc($max_lifetime)
{
$sessions = db_get_array('SELECT * FROM ?:sessions WHERE expiry < ?i', TIME);
if ($sessions) {
foreach ($sessions as $session) {
Session::expire($session['session_id'], $session);
}
// delete old sessions
db_query('DELETE FROM ?:sessions WHERE expiry < ?i', TIME);
}
return true;
}
