PHP can't run under alias folder

[e123e123e123]

Dear Friends :

I can run php , but have php problem when using alias folder , all *.php file display below text :
---------------------------
No input file specified. 
---------------------------
but all html file all are no problem.

pls help  and advise , i just try move to nginx . Thanks.





-----------------------------------------------------
below is nginx.conf
-----------------------------------------------------
..............

location /phpmyadmin/ {
        alias /home/httpd/html/phpmyadmin/;
        autoindex  on;
        index index.php index.shtml index.html index.htm;
        #auth_basic            "Restricted";
        #auth_basic_user_file  /var/www/htpasswd;
    }

location ~ ^/phpmyadmin/.+\.php$ {
      root /home/httpd/html;
      rewrite /phpmyadmin/(.*\.php?) /$1 break;
      fastcgi_pass  127.0.0.1:9000;
      fastcgi_index index.php;
      include fcgi.conf;
     fastcgi_param SCRIPT_FILENAME /home/httpd/html/phpmyadmin/$fastcgi_script_name;
    }

..............

-----------------------------------------------------
below is fcgi.conf
-----------------------------------------------------
fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx;

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_FILENAME    $document_root$fastcgi_script_name;
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  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;

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,4151,4151#msg-4151