You may try with this:
<?php
ob_start();/* buffer the output so no header is sent until the script is
complete*/
session_start();
if (!session_is_registered('_isLoggedIn')) {
header ("Location:viewer.php?type=login");
} else {
// do the stuff to submit a problem if they have
// logged in and have pressed the "submit" button
// in the html
}
?>
// then here is all the html for that page
<?php
ob_end_flush();// send the output now
?>
Bye
Basile Francesco
"Philip Thompson" <prthomp@xxxxxxxx> ha scritto nel messaggio
news:63B09C80-BAEE-11D8-BFD5-000393C795C4@xxxxxxxxxxx
>
> On Jun 10, 2004, at 9:44 AM, Torsten Roehr wrote:
>
> > "Philip Thompson" <prthomp@xxxxxxxx> wrote in message
> > news:701321CF-BAE4-11D8-BFD5-000393C795C4@xxxxxxxxxxx
> >> Hi all.
> >>
> >> I am running a website to where a user needs to login to authenticate
> >> themselves to perform certain tasks. So a user logs in, and I start a
> >> session (in PHP, of course). Well, the catch is, I am doing this all
> >> from one page, 'viewer.php', and I just tack on the specific view/page
> >> that I want them to see, depending on the link selected on that page.
> >> Meaning, they click on the 'submit problem' link and it goes to
> >> 'viewer.php?type=submitproblem'.
> >>
> >> The problem comes whenever I load the view 'submitproblem' and I start
> >> a session with session_start(), which carries over the variable to
> >> tell
> >> whether or not the user is logged in. If they have not logged in
> >> whenever they click on 'submitproblem' then it will redirect them to
> >> 'viewer.php?type=login'. So I log in, and then go to 'submitproblem'.
> >>
> >> This is where I get the error: "Warning: session_start(): Cannot send
> >> session cookie - headers already sent". Essentially, I understand why
> >> this is occurring, but is there an easy way to get around it without
> >> creating a new page, such as 'submitproblem.php' instead of
> >> 'viewer.php?type=submitproblem'???
> >
> > Make sure that NO output is done before session_start() is called. Can
> > you
> > post some of your code?
> >
> > Regards,
> >
> > Torsten Roehr
> >
>
> See, that's the case. Because I'm essentially just changing the content
> within the page, it never leaves the page 'viewer.php' - it just
> changes the content by tacking on '?type=login, submitproblem, etc'.
>
> But my code in the beginning of the file 'submitproblem.view' is:
>
> <?php
> session_start();
>
> if (!session_is_registered('_isLoggedIn')) {
> header ("Location:viewer.php?type=login");
> } else {
> // do the stuff to submit a problem if they have
> // logged in and have pressed the "submit" button
> // in the html
> }
>
> ?>
>
> // then here is all the html for that page
>
> So, does that help any?
>
> ~Philip
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