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Posted by Kailash Nadh on 11/26/07 23:09
On Nov 24, 8:08 pm, ddolg...@gmail.com wrote:
> Hello to everyone,
>
> I have a problem of managing a session with cookies and
> "session_set_save_handler()". I want to use php's built-in session
> management mechanism with user-level session storage functions to
> store session data on the client in cookies.
>
> The simple implementation that I have works well under PHP 5.2.0 ,
> Apache 2.0.54 and WinXP.
>
> When I put it on Linux RHEL3 (Apache/2.0.46 (Red Hat) PHP/5.0.4) I get
> the following error:
>
> "Warning: Cannot modify header information - headers already sent
> in /......./ct.php on line 37". It seems like a simple error but
> setting a cookie with "session_set_save_handler()" becomes kind of
> tricky.
>
> Looks like there is something wrong with my "ob_buffering" settings.
>
> I will appreciate if anyone has any ideas or solutions to the problem.
>
> Here is my script:
>
> <?php
>
> function open($save_path, $session_name)
> {
> return true;
>
> }
>
> function close()
> {
> return true;
>
> }
>
> function read($id)
> {
> $sess_name = 'sess_'.$id;
> if(isset($_COOKIE[$sess_name]))
> {
> return base64_decode($_COOKIE[$sess_name]);
> }
> else
> {
> return '';
> }
>
> }
>
> function write($id, $sess_data)
> {
> $sess_name = 'sess_'.$id;
> if($sess_data) setcookie($sess_name, base64_encode($sess_data), 0,
> '/');
> ob_end_flush();
> return true;
>
> }
>
> function destroy($id)
> {
> $sess_name = 'sess_'.$id;
> setcookie ($sess_name, '', time() - 3600);
> return true;
>
> }
>
> function gc($maxlifetime)
> {
> return true;
>
> }
>
> ob_start();
> session_set_save_handler('open', 'close', 'read', 'write', 'destroy',
> 'gc');
> register_shutdown_function('session_write_close');
> session_start();
>
> $_SESSION['probe'] = 'session data goes here';
>
> header('Content-Type: text/html; charset=win1252');
>
> print_r($_SESSION);
>
> ?>
>
> Thanks to everyone,
> Dmitry
I tested your script out and it worked without any errors.
Can you make sure the script does not output anything before
session_start() ?
(Empty spaces or strat characters before <?php could be the problem)
Kailash Nadh | http://kailashnadh.name
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