/**
*/
public function get($key, $lifetime = 0)
{
$original_key = $key;
$key = $this->_params['prefix'] . $key;
if (isset($this->_expirecache[$key])) {
return $this->_expirecache[$key];
}
$key_list = array($key);
if (!empty($lifetime)) {
$key_list[] = $key . '_e';
}
$res = $this->_memcache->get($key_list);
if ($res === false) {
unset($this->_expirecache[$key]);
} else {
// If we can't find the expire time, assume we have exceeded it.
if (empty($lifetime) || $res[$key . '_e'] !== false && $res[$key . '_e'] + $lifetime > time()) {
$this->_expirecache[$key] = $res[$key];
} else {
$res[$key] = false;
$this->expire($original_key);
}
}
return $res[$key];
}
/**
* Do garbage collection for session tracking information.
*/
public function trackGC()
{
$this->_memcache->lock($this->_trackID);
$ids = $this->_memcache->get($this->_trackID);
if (empty($ids)) {
$this->_memcache->unlock($this->_trackID);
return;
}
$tstamp = time() - $this->_params['track_lifetime'];
$alter = false;
foreach ($ids as $key => $val) {
if ($tstamp > $val) {
unset($ids[$key]);
$alter = true;
}
}
if ($alter) {
$this->_memcache->set($this->_trackID, $ids);
}
$this->_memcache->unlock($this->_trackID);
}
/**
*/
protected function _get($keys)
{
return ($res = $this->_memcache->get($keys)) === false ? array_fill_keys($keys, false) : $res;
}
