Application of swfupload in php program

In the php program, swfupload is used to upload SESSION-related questions. SWFUpload re-opens a new Session process during the upload, which cannot be consistent with the Session of the original program. you need to pass the SessionID of the original program during the upload, based on this, "retrieve" the SESSION-related issues in the Sess php program where swfupload is used to upload files
SWFUpload re-opened a new Session process during the upload process. it cannot be consistent with the Session of the original program. you need to pass the SessionID of the original program during the upload process and "retrieve" the expected Session based on it.
But I cannot find it. If anyone knows this, please help. Thank you. I am using the DEDECMS program.

This is the SEEEION opened in Swfupload.

JScript code

  Upload_url: "upload. php", post_params: {"PHPSESSID ":"
  "}, File_size_limit:" 2048 ", file_types :"*. jpeg ;*. jpg ;*. bmp ;*. png ;*. gif ;*. flv ;*. mp4 ;*. wma ", file_types_description:" format of Upload allowed ", file_upload_limit:" 100 ", file_queue_limit:" 0 ",

This is the information on the upload. php processing page.

PHP code

  if (isset($_POST["PHPSESSID"])) {        session_id($_POST["PHPSESSID"]);    } else if (isset($_GET["PHPSESSID"])) {        session_id($_GET["PHPSESSID"]);    }    $img_path = '/uploads/';    session_start();

How can I obtain the SESSION and determine whether the user has the logon permission to upload files? tell me, please.

------ Solution --------------------
Session_start ();
------ Solution --------------------
Please refer to my example below.
Http://download.csdn.net/detail/sibang/4538151
This example seems to have integrated the sessionid authentication component.