yii2.0框架中session与cookie的用法

我们在开发项目中南面使用到session给和cookie，那么在yii中有他自己的规则
如下案例：

session使用
    function
actionS1(){
       
echo $this->id."
";
       
echo $this->action->id."
";
       
设置session,通过session组件来设置
       
Yii::app()->session['username'] = "zhangsan";
       
Yii::app()->session['useraddr'] = "beijing";
       
echo "make session success";
    }
   
    function
actionS2(){
       
使用session
       
echo Yii::app()->session['username'],"
";
       
echo Yii::app()->session['useraddr'];
       
echo "use session success";
    }
   
    function
actionS3(){
       
删除一个session
       
unset(Yii::app()->session['useraddr']);

删除全部session
       
Yii::app()->session->clear(); 
//删除session变量
       
Yii::app()->session->destroy(); //删除服务器的session信息
    }
   
   cookie在Yii框架使用
    function
actionC1(){
       
设置cookie
       
$ck = new CHttpCookie('hobby','篮球，足球');
       
$ck -> expire = time()+3600;
       
把$ck对象放入cookie组件里边
       
Yii::app()->request->cookies['hobby'] = $ck;

$ck2 = new CHttpCookie('sex','nan');
       
$ck2 -> expire = time()+3600;
       
把$ck对象放入cookie组件里边
       
Yii::app()->request->cookies['sex'] = $ck2;

echo "cookie make success";
    }
    function
actionC2(){
       
访问cookie
       
echo Yii::app()->request->cookies['hobby'],"
";
       
echo Yii::app()->request->cookies['sex'];
    }
    function
actionC3(){
       
删除cookie
       
unset(Yii::app()->request->cookies['sex']);
    }