Nginx location How to set the match before and after the address?

My configuration:

server {listen      80;server_name     www.xxx.com xxx.com;# server_name_in_redirect off;root  /alidata/www/default/yooao/frontend/web;location ~ \.php$ {        fastcgi_pass   127.0.0.1:9000;        fastcgi_index  index.php;        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;        include        fastcgi_params;   }location / {index index.php ;root  /alidata/www/default/yooao/frontend/web;}location ~ ^/backend$ {index index.php ;root  /alidata/www/default/yooao/backend/web;}}

Now is the front desk can go in, backstage but not, I use is yii2 frame. I didn't add it before

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

When you enter the front page will become the download page. Now I want to match the URL into the background do not know what to do, and now into the background www.xxx.com/backend display 404, novice seeking advice

Reply content:

My configuration:

server {listen      80;server_name     www.xxx.com xxx.com;# server_name_in_redirect off;root  /alidata/www/default/yooao/frontend/web;location ~ \.php$ {        fastcgi_pass   127.0.0.1:9000;        fastcgi_index  index.php;        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;        include        fastcgi_params;   }location / {index index.php ;root  /alidata/www/default/yooao/frontend/web;}location ~ ^/backend$ {index index.php ;root  /alidata/www/default/yooao/backend/web;}}

Now is the front desk can go in, backstage but not, I use is yii2 frame. I didn't add it before

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

When you enter the front page will become the download page. Now I want to match the URL into the background do not know what to do, and now into the background www.xxx.com/backend display 404, novice seeking advice

1. The official website document explicitly gives how to configure Nginx, the address is: Http://www.getyii.com/doc-2.0/guide/start-installation.html#nginx

2. If you are using the premium version, after the project is initialized, Frontend,backend needs to be configured separately, that is, to configure two Vhost

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