如何实现隐藏 php 的扩展名访问

我按网上的做法，改了下 nginx 配置，结果不行，访问这个没有扩展名的 php 文件，出现文件下载框.

location ~ (|.php)$ {
       include snippets/fastcgi-php.conf;
    #
    #       # With php7.0-cgi alone:
    #       fastcgi_pass 127.0.0.1:9000;
    #       # With php7.0-fpm:
            fastcgi_pass unix:/run/php/php7.0-fpm.sock;
        #  fastcgi_index /index.php;

   # include fastcgi_params;
   # fastcgi_split_path_info       ^(.+\.php)(/.+)$;
   # fastcgi_param PATH_INFO       $fastcgi_path_info;
   # fastcgi_param PATH_TRANSLATED $document_root$fastcgi_path_info;
   # fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    }