Session Troubles

ab4net

Dear all,
i have a form, which post a variable: username
and it post to the page login.php

i have in login.php;

session_start();
if (session_register("username")){
echo("User name is: $username.");
}else{
echo("Could not set the session variable!");
}

and i think this should register the variable username in the session, but when i run this page, i got the following message:

Warning: Cannot send session cache limiter - headers already sent (output started at c:\inetpub\wwwroot\cash\www\foot.inc:14) in c:\inetpub\wwwroot\cash\www\login.inc on line 11

what that for .. ?
[ am using IIS 5.0] windows 2000 server

MikeA

I had a similar problem and found that all the session stuff MUST be at the very top of your document.

<?PHP
session_start();
session_register('$username');

[rest of code here]

?>
<head>

I hope this helps.

ab4net

did u ment that i have to register the variables before the head ..?!

matt_4013

Your session must be registered before you output anything to the browser.

This WONT work:

<html>
<head>
<title>Login</title>
</head>

<?php

session_start();
session_register("foo");
?>

This WILL work:

<?php

session_start();
session_register("foo");

?>
<html>
<head>
<title>Login</title>
</head>

Hope that helps,
Matt

ab4net

but my program works as follow:

i include the page i want to work with it like :

to log in : index.php?do=login

so thats mean login.inc will be included after the head and some thing like that ..

then , is there a solution, and thank you very much in advacne ..

matt_4013

You could use output buffering. Without your actual code though I can't show you how to do it.

http://www.php.net/manual/en/ref.outcontrol.php

ab4net

i did the index like :
$page=$do.".inc";
if (!$do){
include ("main.inc");
}else{
include("$page");
}

and i think i have to make like that:

if ($do=="login"){
include ("session.inc");
}else{
$page=$do.".inc";
if (!$do){
include ("main.inc");
}else{
include("$page");
}
}

and then place the session registration of the variables in the session.inc

whats ur oppenion .. ?

leatherback

ab4net

yes you are right .
registering the variables in a session have to be before any HTML output ..

matt_4013

Of course i'm right! I wouldn't have said it if I wasn't! geeez 😉 As I said, you can either change your entire application around and re-structure it (this is what I would recommend), or you can use output buffering.

altexis

if you want the minimum hustle

put the session_start() function on top of all your pages and leave evertything else as it is:

<?php session_start(); ?>
<html>
...
..
<?php
//rest of your php code
?>
...

</html>