> Yii2通过在config/web.php 文件设置cookieValidationKey哈希字符串来签名每个cookie，从而保护 cookies 在客户端被别人修改。 [TOC] ## 获取cookie ~~~ public function actionReadCookies() { // 从request组件获取cookie对象 $cookies = Yii::$app->request->cookies; // 如果language不存在，则赋默认值 $language = $cookies->getValue('language', 'Chinese'); // cookie对象也可以当数组使用 if (isset($cookies['language'])) { $language = $cookies['language']->value; } // check if there is a "language" cookie //检测是否含有language cookie if ($cookies->has('language')) echo "当前语言为: $language"; } ~~~ ## 设置cookie ~~~ public function actionSendCookies() { // 从response组件获取cookie对象 $cookies = Yii::$app->response->cookies; // 添加cookie $cookies->add(new \yii\web\Cookie([ 'name' => 'language', 'value' => 'Chinese', ])); $cookies->add(new \yii\web\Cookie([ 'name' => 'username', 'value' => 'Hippo', ])); $cookies->add(new \yii\web\Cookie([ 'name' => 'country', 'value' => 'China', ])); } ~~~ ## 删除cookie ~~~ public function actionDeleteCookies() { \Yii::$app->response->cookies->remove('language'); } ~~~