query("SHOW COLUMNS FROM `{$prefix}goods` LIKE 'item_type'"); // M-03: 修复 empty($result) 对 PDOStatement 永远返回 false 的问题 $resultItemType = $query->fetchAll(); if (count($resultItemType) == 0) { $db->execute("ALTER TABLE `{$prefix}goods` ADD COLUMN `item_type` VARCHAR(20) NOT NULL DEFAULT 'normal' COMMENT '商品类型:normal=普通 goods ticket=票务 physical=周边' AFTER `is_shelves`"); } $queryConfig = $db->query("SHOW COLUMNS FROM `{$prefix}goods` LIKE 'vr_goods_config'"); $resultConfig = $queryConfig->fetchAll(); if (count($resultConfig) == 0) { $db->execute("ALTER TABLE `{$prefix}goods` ADD COLUMN `vr_goods_config` LONGTEXT COMMENT '票务配置' AFTER `item_type`"); } } public function Uninstall($params = []) { // 卸载操作通常由 uninstall.sql 完成 } public function Upgrade($params = []) { } } ?>