Using php sessions?

Question

On my first page I have a form. it will ask for 3 pcs, of info. on page 2 I set 3 sessions from the form on page 1. I try and use the sessions on page 3 and I keep getting this error

Notice: Undefined variable: _session in C:\Program Files\Abyss Web Server\htdocs\webcards\build3.php on line 17

I set the sessions like this on page 2.

$_session['sendto'] = $sendto;

Can any one tell me what I'm doing wrong

Thanks

Joe

I added the session_start(0 at the top and when I run the page it say sessions already started.

Answer 1

on each page, use
session_start();

Set & get the values as $_SESSION['variable'];

Answer 2

Type
session_start();
at the first line of each script.

Answer 3

you have to put session_start(); at the top of every page you want to use sessions in.