public function actionContentInfo()
 {
     $token = \Yii::$app->request->headers->get('token');
     $content = Content::findBySql('select * from content')->asArray()->all();
     if (isset($token)) {
         $array = ['error_no' => 0, 'error_msg' => '', 'data' => ['list' => $content]];
         echo json_encode($array);
     }
 }