public static function disconnectDatabase()
{
if (isset(self::$db)) {
self::$db->disconnect();
self::$db = null;
}
}
public static function disconnectCachedDbConnection()
{
// code redundancy w/ above is on purpose; above disconnectDatabase depends on method that can potentially be overridden
if (!is_null(self::$db)) {
self::$db->disconnect();
self::$db = null;
}
}