server {
  listen 80;
  server_name localhost;
  access_log logs/access.log;
  error_log  logs/error.log;

  index index.php index.html;

 # == 非framework專案 ==
  location / {

    root  d:/www;

    location ~ \.php$ {
      fastcgi_pass   php_processes;
      fastcgi_index  index.php;
      fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
      include        fastcgi_params;          
    }
  }
 # == 非framework專案 ==

 # == framework專案 ==
  location ^~ /xxxx/ {
    
    alias d:/slim/;
    try_files $uri $uri/ @slim;
    #try_files $uri $uri/ /xxxx/index.php$is_args$args;

    location ~ \.php$ {
      fastcgi_split_path_info ^(.+\.php)(.*)$;    
      fastcgi_pass   php_processes;
      fastcgi_param  SCRIPT_FILENAME $request_filename;   
      include        fastcgi_params; 
    }
  }

  location @slim {
    rewrite /(.*)$ /xxxx/index.php?/$1 last;
  }  
 # == framework專案 ==
} 

Ref：
https://laracasts.com/discuss/channels/laravel/nginx-setup-for-multiple-projects
https://blog.martinfjordvald.com/2011/01/no-input-file-specified-with-php-and-nginx/
http://www.wkii.org/nginx-set-directory-alias-and-root.html