/** * Get the ID prefix for AWS documents * * @return string */ public static function get_document_id_prefix() { // generate prefix if we haven't already if (empty(self::$document_id_prefix)) { if (is_multisite()) { $site = get_current_site(); self::$document_id_prefix = $site->id; } else { self::$document_id_prefix = 1; } self::$document_id_prefix .= '_' . get_current_blog_id() . '_'; self::$document_id_prefix = apply_filters('lift_document_id_prefix', self::$document_id_prefix); } return self::$document_id_prefix; }