$criteria = new CDbCriteria;$criteria->select = array('ziduan"); $res = Model::model()->findAll($cirteria);

　　

搜某一个字段

//当前域名 echo Yii::app()->request->hostInfo; //当前URLecho Yii::app()->request->getUrl();//返回首页 echo Yii::app()->user->returnUrl;//提交后 防止重复提交Ccontroler->refresh();//上一页url  很有用哦Yii::app()->request->urlReferrer;//获取ip地址 Yii::app()->request->userHostAddress; //yii execute后获取insert id $id = Yii::app()->db->getLastInsertID(); //yii获取get,post过来的数据 Yii::app()->request->getParam('id'); //Yii->user（当前用户）相关 常用方法是 class Controller extends CController { 　　public $user = null; 　　$this->user = Yii:app()->user; } 　　this->user->isGuest; 　　this->user->id; 　　this->user->name;