老杨碰到Nginx 使用Path_info报303或304错误，304好解决，303的问题纠结了很长时间，解决方法为下面的红字！

server {

    listen       80;
    server_name a.abc.com;
index index.html index.htm index.php;
root /alidata/www/abc;
location ~ .*\.(php|php5)?$
{
#fastcgi_pass  unix:/tmp/php-cgi.sock;
fastcgi_pass  127.0.0.1:9000;
fastcgi_index index.php;
if ($request_filename ~* (.*)\.php) {
   set $php_url $1;
}
if (!-e $php_url.php) {
#return 403;
   rewrite ^(.*)$ /index.php?s=/$1 last;
   break;
}
fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;

fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;

fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;
}
location / {
   if (!-e $request_filename) {
   rewrite ^(.*)$ /index.php?s=/$1 last;
   break;
   }
 }