赏风听雨的专栏

参考：https://github.com/yii2-chinesization/yii2-zh-cn/blob/master/guide-zh-CN/db-dao.md 返回多行 $command = $connection->createCommand('SELECT * FROM post'); $posts = $command->queryAll(); 翻译单行 $

参考：https://github.com/yii2-chinesization/yii2-zh-cn/blob/master/guide-zh-CN/db-active-record.md