增:
$model=new User();
$model->username=‘a’;
$model->province=‘b’;
$model->save();
改:
$model=User::find()->where()->one();
$model->username=‘a’;
$model->save();
删:
$model=User::findone();
$model->delete();
User::deleteAll([‘in’,‘id’,[1612,1613]]);
User::updateAll([‘username’=>‘abei’]),可以接条件(数组形式)的