1、设置cookie
$cookie= new CHttpCookie('mycookie','thisismycookie');
$cookie->expire=time()+60*60*24*30; //有限期30天
Yii::app()->request->cookies['mycookie']=$cookie;
2、读取cookie
$cookie = Yii::app()->request->getCookies();
echo $cookie['mycookie']->value;
3、销毁cookie
$cookie= Yii::app()->request->getCookies();
unset($cookie[$name]);