不灭的火

设置cookie:

$cookie = new CHttpCookie('mycookie','this is my cookie');
$cookie->expire = time()+60*60*24*30;   //有限期30天
Yii::app()->request->cookies['mycookie']=$cookie;

读取cookie:

$cookie = Yii::app()->request->getCookies();
echo $cookie['mycookie']->value;

销毁cookie:

$cookie = Yii::app()->request->getCookies();
unset($cookie[$name]);