public function actionIndex()
 {
     $IndexModel = new IndexModel();
     $memcache = Yii::$app->cache;
     $now_time = date("i", time());
     $bookname_pinyin = $_GET['bookname'];
     $article_id = $_GET['article_id'];
     if ($article_id == 'index') {
         $action = 'index';
     } else {
         $action = 'content';
     }
     if ($now_time % 10 == 0) {
         $memcache->delete('Directory_bookinfo_' . $bookname_pinyin);
     }
     if (empty($memcache->get('Directory_bookinfo_' . $bookname_pinyin))) {
         $bookinfo = new bookinfo();
         $article = new article();
         $book_info = $bookinfo->Get_bookinfo_pinyin($bookname_pinyin);
         if (empty($book_info)) {
             $this->redirect('/404.php', 404);
         }
         //如果本小说不存在 则跳转404页面
         $article_info = $article->Get_All_Article_Id($book_info['id']);
         $memcache->set('Directory_bookinfo_' . $bookname_pinyin, $book_info);
         $memcache->set('Directory_articleinfo_' . $bookname_pinyin, $article_info);
         $memcache->set('Directory_articleid_' . $bookname_pinyin, $article_id);
         return $this->render($action, ['bookinfo' => $memcache->get('Directory_bookinfo_' . $bookname_pinyin), 'article_info' => $memcache->get('Directory_articleinfo_' . $bookname_pinyin), 'article_id' => $memcache->get('Directory_articleid_' . $bookname_pinyin)]);
     } else {
         return $this->render($action, ['bookinfo' => $memcache->get('Directory_bookinfo_' . $bookname_pinyin), 'article_info' => $memcache->get('Directory_articleinfo_' . $bookname_pinyin), 'article_id' => $memcache->get('Directory_articleid_' . $article_id)]);
     }
 }