get values from session without session_start

[marconi8]

i know session_id, but i dont want to start session to get values fromt it

how can i get values from session without session_start

for example

$var = get value from ($_SESSION['a'][1])

thanks.....

[Weedpacket]

If you're using the default file-based session-handling system, you could read the relevant file in the directory where they're all being stored. Their names are of the form "sess_whatever the session id is", and the format ... um ... I forget. Let's see...
Looks like this:

foo|s:3:"bar";baz|i:97;wibble|a:3:{i:0;s:4:"this";i:1;s:4:"that";i:2;s:6:"tother";}

1. The bit up to the pipe is the name of the session variable.

2. Then the value, specified according to the usual rules for serialize() , so unserialize() can be used to parse it.

3. Then a semicolon, and the format repeats for the next session variable.

[marconi8]

$f = file_get_contents("C:\ess_0420bbe7396503007d07570f5c5abdf3");

i put serialized string into var $f

now i try to unserialize this var but it seems that i do something wrong