Magento 1.8 的 Nginx 配置

anybody knows how to configure server {} in configuration file of nginx server? I have something like this below:

server {
  server_name   local.com;

  root some_path;

  index index.php;

  #location / {
    #try_files $uri $uri/ index.php;
    #proxy_pass  http://127.0.0.1:9000;
  #}

  # set a nice expire for assets
  #location ~* "^.+.(jpe?g|gif|css|png|js|ico|pdf|zip|tar|t?gz|mp3|wav|swf)$" {
  #  expires    max;
  #  add_header Cache-Control public;
  #}

  # the downloader has its own index.php that needs to be used
  #location ~* ^(/downloader|/js|/404|/report)(.*) {
  #  include fastcgi_params;
  #  fastcgi_index index.php;
  #  fastcgi_param  SCRIPT_FILENAME  $document_root$1/index.php$1;
  #  fastcgi_read_timeout 600;
  #  fastcgi_pass  127.0.0.1:9000;
  #}

  location ~* .php {
    include               fastcgi_params;
    fastcgi_param         SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    fastcgi_read_timeout  18000;
    fastcgi_pass          127.0.0.1:9000;
  }

  #location ~* ^(/index.php)?(.*) {
  #  include               fastcgi_params;
  #  fastcgi_param         SCRIPT_FILENAME  $document_root/index.php$1;
  #  fastcgi_pass          127.0.0.1:9000;
  #  fastcgi_read_timeout  18000;
  #}

}

浏览器返回空白页并且不执行 php...

/* Store or website code */
$mageRunCode = isset($_SERVER['MAGE_RUN_CODE']) ? $_SERVER['MAGE_RUN_CODE'] : '';
/* Run store or run website */
$mageRunType = isset($_SERVER['MAGE_RUN_TYPE']) ? $_SERVER['MAGE_RUN_TYPE'] : 'store';
Mage::run('', 'store'); //<-this
//Mage::run($mageRunCode, $mageRunType);