Safe to do this?

Because i execute my url e.g. 127.0.0.1/login.php?mod=Login

Where login.php has this

<?php

require_once 'secureSession.php';
session_start();
if(isset($_GET['mod']) && $_GET['mod'] == "Login")){
require_once('header.php');
require_once('body.php');
require_once('footer.php');
}

?>

Within the body.php, I've to check if the user is logged in already, and by your example it would be done by

$ss->check();

But it would then have stated that the session_id has already been generated. So would it be then safe to modify the code to this?

if(!isset($_SESSION['ss_fprint'])){
$this->_RegenerateId();
}


Appreciate your answer!

Call Open() when you're setting the session flag indicating the user is logged in. Then call Check() with exactly the same parameters when checking if the flag was set or not.