cookie

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]);