laravel5.5实现页面静态化

列表页面的静态化：

public function lists(){
        $dir = dirname(app_path()).'/resources/views/html';
        if(file_exists($dir.'/list.blade.php') && time()<filemtime($dir.'/list.blade.php')+10){
            return view('html/list');
        }

        $data = DB::table('user')->get();//查询数据
        $content = view('ten.list',['arr'=>$data]);//渲染模板

        if(!file_exists($dir)){
            mkdir($dir);
        }
        file_put_contents($dir.'/list.blade.php',$content);
        return $content;
    }