Description:
------------
I can not get the session by HTTP GET whitch is set by another script,
the 2 scripts are in the same domain...

Reproduce code:
---------------
there are 2 scripts,one is a.php,another is b.php
at b.php,the code is:
#b.php
########
//session_id('1234');
session_id($_COOKIE['PHPSESSID']);
session_start();
$_SESSION['abc'] = 'test';
########

and the a.php is:
#a.php
#########
//session_id('1234');
session_start();
fetch("b.php");
print_r($_SESSION);

function fetch($url){
  //at this,i try file_get_contents,curl(send cookie SID),and PEAR::HTTP_Request,and all can not work
}

Expected result:
----------------
I want it will display the value of $_SESSION at a.php whitch set in b.php 

Actual result:
--------------
timeout,blank