$sql_where = "type IN (" . join(',', $folder_types_db) . ")";
if ($opts['username']) {
$sql_where .= ' AND resource LIKE ?';
}
$sql_query = "DELETE FROM %s WHERE folder_id IN (SELECT folder_id FROM kolab_folders WHERE $sql_where) AND created <= " . $db->quote(date('Y-m-d 00:00:00', $expire));