Yii框架实现对数据库的CURD操作示例_php实例_

 namespace app\controllers; use yii\web\Controller; use app\models\user; 

 $sql = "select * from user where UserId = :id"; $res = user::findBySql($sql,['id'=>1])->all(); print_r($res[0]); //如果只需要查询一条数据 $res = user::findBySql($sql,['id'=>1])->one(); print_r($res); 

 $res = user::find()->where(['id'=>1])->one(); print_r($res); 

 $user = new user(); //直接数据库中的字段作为属性赋值，属性名需和数据名字相同，否则报错 $user->UserName = "Doubly"; $user->Password = "123"; $user->Email = "doubly_yi@qq.com"; //调用user对象的save方法就可以保存 $user->save(); 

 //首先获取需要修改的对象 $user = user::find()->where(['UserId'=>1])->one(); //设置需要修改的属性 $user->UserName = "益"; //调用对象的update() $user->update(); 

 //首先获取需要删除的对象 $user = user::find()->where(['UserId'=>1])->one(); //执行对象的delete()方法 $user->delete();