YII cookie介绍和用法示例 _YIIcookie

本文概述

设置 cookie
获取 cookie
删除 cookie

Cookie是服务器嵌入用户系统中的一个小文件, 用于识别用户。
在Yii中, 每个cookie都是yii \ web \ Cookie的对象。
yii \ web \ Request(请求中提交的cookie的集合)和yii \ web \ Response(需要发送给用户的cookie的集合)通过名为cookies的属性维护cookie的集合。
控制器在应用程序中处理cookie请求和响应。因此, 应在控制器中读取并发送cookie。
设置 cookie 使用以下代码将Cookie发送给最终用户。

// get the cookie collection (yii\web\CookieCollection) from the "response" component $cookies = Yii::$app-> response-> cookies; // add a new cookie to the response to be sent $cookies-> add(new \yii\web\Cookie([ 'name' => 'name', 'value' => 'sssit', ]));

获取 cookie 要获取Cookie, 请使用以下代码。

// get the cookie collection (yii\web\CookieCollection) from the "request" component $cookies = Yii::$app-> request-> cookies; // get the cookie value. If the cookie does not exist, return "default" as the default value. $name = $cookies-> getValue('name', 'default'); // an alternative way of getting the "name" cookie value if (($cookie = $cookies-> get('name')) !== null) { $name = $cookie-> value; }// you may also use $cookies like an array if (isset($cookies['name'])) { $name = $cookies['name']-> value; }// check if there is a "name" cookie if ($cookies-> has('name')) ... if (isset($cookies['name'])) ...

删除 cookie 【YII cookie介绍和用法示例】要删除cookie, 请使用Yii的remove()函数。

$cookies = Yii::$app-> response-> cookies; // remove a cookie $cookies-> remove('name'); // equivalent to the following unset($cookies['name']);

例：
让我们看一个设置和显示cookie值的示例。
步骤1在SiteController.php文件中添加两个动作actionSetCookie和actionShowCookie。

class SiteController extends Controller { /** * @inheritdoc */ public function behaviors() { return [ 'access' => [ 'class' => AccessControl::className(), 'only' => ['logout', 'signup'], 'rules' => [ [ 'actions' => ['signup'], 'allow' => true, 'roles' => ['?'], ], [ 'actions' => ['logout', 'set-cookie', 'show-cookie'], 'allow' => true, 'roles' => ['@'], ], ], ], 'verbs' => [ 'class' => VerbFilter::className(), 'actions' => [ 'logout' => ['post'], ], ], ]; } /** * @inheritdoc */ public function actions() { return [ 'error' => [ 'class' => 'yii\web\ErrorAction', ], 'captcha' => [ 'class' => 'yii\captcha\CaptchaAction', 'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null, ], ]; } public function actionSetCookie() { $cookies = Yii::$app-> response-> cookies; $cookies-> add(new \yii\web\Cookie ([ 'name' => 'test', 'value' => 'SSSIT Pvt. Ltd.' ])); } public function actionShowCookie() { if(Yii::$app-> getRequest()-> getCookies()-> has('test')) { print_r(Yii::$app-> getRequest()-> getCookies()-> getValue('test')); } }

步骤2在浏览器上运行它, 以首先使用以下URL设置cookie,
http：//localhost/cook/frontend/web/index.php？r = site / set-cookie