/**
* Calculates the number of current visitors and users
* @return null
*/
private function calculateVisitorStats()
{
$this->numUsers = 0;
$this->numVisitors = 0;
$this->currentUsers = array();
$sessionPath = $this->session->getPath();
$sessionLifeTime = $this->session->getLifeTime();
$sessionTimeOutTime = time() - $sessionLifeTime;
$sessionFiles = $sessionPath->read();
foreach ($sessionFiles as $sessionFile) {
if ($sessionFile->getModificationTime() < $sessionTimeOutTime || !$sessionFile->isReadable()) {
continue;
}
$content = $sessionFile->read();
if (!$content) {
continue;
}
$content = substr($content, strlen(Session::SESSION_NAME) + 1);
try {
$content = unserialize($content);
$this->numVisitors++;
if (array_key_exists(self::SESSION_USERNAME, $content)) {
$username = $content[self::SESSION_USERNAME];
$this->numUsers++;
$this->currentUsers[$username] = $username;
}
} catch (Exception $exception) {
}
}
sort($this->currentUsers);
}
