Not able to maintain values in session - php

Question

Not able to maintain values in session at the client side(Member login).
In the code below, we had stored client id in a session variable. But we can’t access that in myprofile.php. So after login, we can’t maintain myprofile page.
What could be the error?
case "LOGIN":
{
$username = $_REQUEST['a0'];
$password = md5($_REQUEST['a1']);
$table_name = "coco_members";
$count = $fn->returnColumn($table_name,"count(*) as val","member_uname='$username' and member_pwd='$password' and member_active='1'");
if($count>0)
{
$result = $fn->returnColumn($table_name,"member_id","member_uname='$username' and member_pwd='$password' and member_active='1'");
}
else
{
$result ="";
}
if($result!="")
{
$_SESSION['CID'] = $result;
echo $_SESSION['CID'];
}
else
{
$_SESSION['CID']="";
echo "NOK";
}
break;
}
case "GETPOSTS":
{
$page = $_REQUEST['page'];
$activeid = $_REQUEST['id'];
$count = $_REQUEST['count'];
include("includes/client.php");
echo getPosts($page,$activeid,$count);
break;`

Answer 1

I also had some problems with sessions at some servers. In XAMP it would work prefect but when transferred on server it would not recognize session. Finally I find solution for this, by trails and errors. By creating session.php file and including it at the top of all files that needed session. Just write session_start(); in session.php and that is all.
Dunno if this will help you but it helped me while working on few project that had servers who wouldn't do what they needed to.
EDIT: In 90% percent of my cases, that had this problem, where on free servers so if your working on free server this might fix it.