如何从选定的PHP会话文件中读取

Question

Is there a solution that allows me to create a session file based on the first request(request is not coming from a browser but contains a unique ID that will be maintained for a given period/session) and then read from this session file on subsequent requests coming from this same user (identified by the unique ID in request)?

I thought that when I set a session_id($id) or session_name($name) on the first request and create a session(ie session file), I will be able to on user's subsequent request identify and read this session file and pick values from it.

Note: These requests are not coming from a browser.

In a web browser, the cookie holds the ID that identifies the session files so values can be picked from it on subsequent requests. But I don't have this available.

EDITED TO ADD CODE LOGIC

if($_GET['sequence'] == 0)  // first request
{
    $uniqueID = $_GET['uniqueID'];
    // I thought     this will create a session file with value provided
    session_id("ses$uniqueID");
    session_start();
    $_SESSION['data1'] = $_GET['data'];
}
else // subsequent request
{
    // we should have a session file, so I thought this will fetch it
    $uniqueID = $_GET['uniqueID'];
    session_id("ses$uniqueID");  //;(
    session_start();
    $data = $_SESSION['data1'];
}
// ....`