Nginx Subdomain rewrite

I use nginx in ispconfig 3 panel The vhost are like this

Code:

server {
    listen *:80;


    server_name domain.com www.domain.com sub.domain.com;

    root   /var/www/domain.com/web;

    if ($http_host = "sub.domain.com") {
        rewrite ^(?!/\b(ar|stats|error)\b)/(.*)$ /sub/$2 ;

    }


    index index.html index.htm index.php index.cgi index.pl index.xhtml;


    rewrite ^/contactez-nous /contact.php break;


    error_page 400 /error/400.html;
    error_page 401 /error/401.html;
    error_page 403 /error/403.html;
    error_page 404 /error/404.html;
    error_page 405 /error/405.html;
    error_page 500 /error/500.html;
    error_page 502 /error/502.html;
    error_page 503 /error/503.html;
    recursive_error_pages on;
    location = /error/400.html { ...

I want to add an rewrite rule in sub.domain.com

I try this, but do not work

Code:

if ($http_host = "sub.domain.com") {
rewrite ^(?!/\b(ar|stats|error)\b)/(.*)$ /sub/$2 ;

rewrite ^/contactez-nous /contact.php break;
}

Does any one have an idea?

 

I get this error, when i try to acces to http://sub.domain.com/contactez-nous

 

This work, thank you, but we must add /sub befor contact.php, like this

rewrite ^/contactez-nous /sub/contact.php break;
rewrite ^(?!/\b(ar|stats|error)\b)/(.*)$ /sub/$2 ;

 

Thank you