namespace app\controllers;
use yii\web\Controller;
class HelloController extends Controller{
public function actionIndex(){
$response = \Yii::$app->response;
//用于设置状态吗
//$response->statusCode = '404';
//用于设置浏览器缓存相关
//$response->headers->add('pragma', 'no-cache');
//$response->headers->set('pragma', 'max-age=5');#缓存5s
$response->headers->remove('pragma');#删除pragma头参数
//跳转
//$response->headers->add('Location', 'https://www.baidu.com');
//$this->redirect('https://www.baidu.com', 302);
//文件下载
//$response->headers->add('content-disposition', 'attactment;filename="a.jpg"');
//$response->sendFile('./robots.txt');
}
}
