Hi,

finally, I've solved it.

[size=small]server {

listen 80;
server_name myserver.es;

location ~*/apc {
#root /usr/local/nginx/htdocs;
auth_basic "Restricted";
auth_basic_user_file /usr/local/nginx/htdocs/.htpasswd;
location ~\.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /usr/local/nginx/htdocs$fastcgi_script_name;
include /usr/local/nginx/conf/fastcgi_params;
}
}
location ~\.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /usr/local/nginx/htdocs$fastcgi_script_name;
include /usr/local/nginx/conf/fastcgi_params;
}
}[/size]

Solution posted.

Thank you