sessions

tbobker

newbie here so sorry about the simple problem but I seem to be having a problem using sessions, i declare my session variables and can see them being stored in the temp file only when i call them in later pages or they do not show and in my pages i keep getting this message:

Warning: Cannot send session cookie - headers already sent by (output started at c:\phpdev\www\php_assignment\ticket.php:3) in c:\phpdev\www\php_assignment\ticket.php on line 4

Warning: Cannot send session cache limiter - headers already sent (output started at c:\phpdev\www\php_assignment\ticket.php:3) in c:\phpdev\www\php_assignment\ticket.php on line 4

i checked the php.ini file and sesion_cookies are set to 1?

Any advice from the experts would be great.

HP400

You session variables have to be delcared before any output. Check the code before your session information and make sure there isn't any HTML code or any echo/print statments.

tbobker

Hi, thanks for the really speedy reply, but i have made sure i declare the variables before anything and i still get this message on another page to:

Warning: Cannot send session cache limiter - headers already sent (output started at c:\phpdev\www\php_assignment\payment.php:2) in c:\phpdev\www\php_assignment\payment.php on line 3

if it helps here is the code from the first page where i get a message:

<?php
session_start();

$_SESSION['origin'] = $_POST[selorigin];
$_SESSION['destination'] = $_POST[seldestination];

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>

<head>

</head>

<body>

<div class="heading">Enter number of tickets required</div>

<div class="heading">Select the class of your ticket</div>

<select name="txtclass">
<option value="150">Economy
<option value="200">Business
<option value="300">First
</select>

</div>

</div>
</div>
</form>

</body>
</html>

HP400

Actually I meant start the session and not declare the variables. The session must be started before output (just to clear up my post). This error basically says you sent some output at line 2. Check what line 2 of payment.php is.

jmrouleau

If you are using dreamweaver or similar try opening the file in notepad to see if there are any characters before your php tags...Sometimes software will do this and its a real pain.

If there is just delete everything before your first <?php and save it

tbobker

It doesnt seem to be working let me just recap:

you start the session before anything else then declare your session variables like this;

<?php

session_start();

$SESSION[some_variable] = $POST[some_post];

these variables are then stored in the temp folder so you can use them when ever you like?

123

Hey

I recently had this problem.

make sure your php code start right at the very top.

In my code line 1 and line 2 were empty and i started my code on line 3. Line 1 and

Line 2 even though there empty and have no HTML were sent to the browser as

header information. Hence causeing a similar error to yours

tbobker

Hey thanks, it works - my god all you have to make sure is that there is no empty space on lines 1, 2 etc vefore starting sessions.

Thanks, you are a genious!