function SessionManager::getSessionDataMask

Returns a map specifying which session key is containing user data.

Return value

array An array where keys correspond to the session keys and the values are booleans specifying whether the corresponding session key contains any user data.

File

core/lib/Drupal/Core/Session/SessionManager.php, line 311

Class

SessionManager

Manages user sessions.

Namespace

Code

protected function getSessionDataMask() {
    if (empty($_SESSION)) {
        return [];
    }
    // Start out with a completely filled mask.
    $mask = array_fill_keys(array_keys($_SESSION), TRUE);
    // Ignore the metadata bag, it does not contain any user data.
    $mask[$this->metadataBag
        ->getStorageKey()] = FALSE;
    // Ignore attribute bags when they do not contain any data.
    foreach ($this->bags as $bag) {
        $key = $bag->getStorageKey();
        $mask[$key] = !empty($_SESSION[$key]);
    }
    return array_intersect_key($mask, $_SESSION);
}