public static function getInstance()
{
if (is_null(self::$instance)) {
$prefs = Preferences::getInstance();
if (!$prefs) {
die_error('get Preferences failed', __FILE__, __LINE__);
}
$mods_enable = $prefs->get('general', 'module_enable');
if (!in_array('UserDB', $mods_enable)) {
die_error(_('UserDB module must be enabled'), __FILE__, __LINE__);
}
$mod_app_name = 'UserDB_' . $prefs->get('UserDB', 'enable');
self::$instance = new $mod_app_name();
}
return self::$instance;
}
public static function getInstance()
{
if (!self::$instance instanceof self) {
self::$instance = new self();
}
return self::$instance;
}