yii2.0的cookie

cookie的設置：

在components文件夾創建CKhelper.php文件

namespace app\components;


use yii\web\Cookie;

class CKhelper
{
    /*
     *\yii::$app->request|\yii::$app->response下的cookie都是CookieCollection的對象
     * \yii::$app->request  下的CookieCollection的readonly屬性爲true  只能讀不能寫
     * \yii::$app->response 下的CookieCollection的readonly屬性爲false 不是隻讀的
     */
    public static function set($key,$val,$expire=1200){
        $cook=new Cookie();
        $cook->name     =$key;
        $cook->value    =$val;
        $cook->expire   =time()+$expire;
        \yii::$app->response->cookies->add($cook);

    }
    public static  function get($key){
       return  \yii::$app->response->cookies->get($key);
    }
    public static  function getValue($key){
        return \yii::$app->request->cookies->getValue($key,false);
    }
        /*
         * 不是刪除瀏覽器客戶端所有的cookie而是，刪除本次請求對cookie的所有寫操作
         * 即不改變當前瀏覽器的cookie狀態
         */
    public static  function  del(){
        //\yii::$app->response->cookies->remove($key);
        \yii::$app->response->cookies->removeAll();
    }
}

在控制器中調用即可

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2016/7/13
 * Time: 17:06
 */

namespace       app\controllers;
use app\components\CKhelper;
use             yii\base\Controller;

 class CookController extends Controller
{
    public function actionIndex(){
        CKhelper::set('username','哈哈');
        CKhelper::set('nickname','aa');

    }
     public function actionGet(){
         //echo CKhelper::get('nickname');
            $res=CKhelper::getValue('username');
            echo"<pre>";
                print_r($_COOKIE);
     }
     public function actionDel(){
         CKhelper::del();
     }
}