PHP and MySQL Session - php

Question

we moved our website to a new server that came with a new IP address. What puzzles me; the website login sessions do not work on the new server but when I change the database IP to the old server they are working.
MySQL Version :
Old server = 5.1.58- Community
New server = 5.1.68 - Community
At first I thought it was a PHP error but I now believe it's not and suspect its MySQL related. Anyone who knows what might have caused this conflict?
Debugging Error :
Notice: A session had already been started - ignoring session_start() in C:\inetpub\wwwroot\gtest\libs\products.php on line 2 Notice: Undefined index: uUserTypeID in C:\inetpub\wwwroot\gtest\admin\index.php on line 50 Notice: Undefined offset: 0 in C:\inetpub\wwwroot\gtest\admin\index.php on line 52 Notice: Undefined offset: 0 in C:\inetpub\wwwroot\gtest\admin\index.php on line 52
Line 50 :
GetUserType($_SESSION['uUserTypeID'], $UserTypeID, $UserTypeDescr, $Active_Tag);
Line 52 :
if (($UserTypeDescr[0] == 'Admin') || ($UserTypeDescr[0] == 'Report'))
Code overview :
<?php
error_reporting(E_ALL);
ini_set('display_errors', True);
session_start();
require '../libs/database.php';
require '../libs/users.php';
require '../libs/products.php';
require '../libs/quotes.php';
require '../libs/common.php';
require 'functions.admin.php';
if (!($_SESSION['uAUID']) > 0)
{
DisplayLoginForm();
}
else
{
**GetUserType($_SESSION['uUserTypeID'], $UserTypeID, $UserTypeDescr, $Active_Tag);**
**if (($UserTypeDescr[0] == 'Admin') || ($UserTypeDescr[0] == 'Report'))**
{
if (isset($_POST['eProdID']) && isset($_POST['eProdGroupID']))
{
$_SESSION['page'] = 'edit_product';
$_SESSION['page_header'] = 'Edit Product';
}
else if (isset($_POST['eProdGroupID']))
{
$_SESSION['page'] = 'edit_product_group';
$_SESSION['page_header'] = 'Edit Product Group';
}
else if (isset($_POST['eAUID']))
{
$_SESSION['page'] = 'edit_user';
$_SESSION['page_header'] = 'Edit User';

Answer 1

Check over your included files/code structure.. A usual cause for this error is:
session_start();
/* Random Code here /*
session_start();
Just the duplicate lines of session_start(); So what I will suggest is to look over your included files/main page(s) that you are receiving this error message on, and check for more than one session_start();