Difference between #6 and #5 of How to hide index.php on nginx

In order to use `path` URL format and hide index.php on nginx+fastcgi+php, we
need the following configurations.

First, we need to add PATH_INFO to the server configuration. Otherwise, we will
not be able to use `path` URL format in Yii:

~~~
location ~ \.php {      
    fastcgi_pass  127.0.0.1:9000;
    fastcgi_index index.php;
    include fastcgi_params;
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_param PATH_INFO $fastcgi_script_name;
    access_log off;
}
~~~

Second, we need the following rewrite rule to hide `index.php`:

~~~
location /yiiGuestbook {
    if (!-e $request_filename){
        rewrite (.*) /yiiGuestbook/index.php/$1;
    }
}
~~~

Please refer to [the Guide](http://www.yiiframework.com/doc/guide/topics.url)
for hiding `index.php` on Apache httpd server.

### Links

[Russian version](http://dbhelp.ru/nginx-good-urls/page/)