Re: [PHP] Logged Out of Seesion, Then use back button
http://www.php.net/manual/en/function.header.php
?php
// Date in the past
header(Expires: Mon, 26 Jul 1997 05:00:00 GMT);
// always modified
header(Last-Modified: . gmdate(D, d M Y H:i:s) . GMT);
// HTTP/1.1
header(Cache-Control: no-store, no-cache, must-revalidate);
header(Cache-Control: post-check=0, pre-check=0, false);
// HTTP/1.0
header(Pragma: no-cache);
?
From: Roger Spears [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: [PHP] Logged Out of Seesion, Then use back button
Date: Tue, 23 Sep 2003 11:51:40 -0400
Hello,
I've googled to try to find an answer to this. I've also checked the
php.net site. Perhaps I'm not using the correct search parameters. The
only suggestion I've found is the following code:
?php
header('Cache-Control: no-cache');
header('Pragma: no-cache');
?
But this doesn't seem to solve my problems.
My problem/question is as follows.
I have an email script that works in the following steps:
1) Login (if success then FROM and a personal email signature are
properly populated)
2) Choose specifics for the email (this populates the TO variable and the
other BODY variables)
3) Then click on preview (this creates the email with all the current
variables, on the screen for viewing)
4) Then send the email
5) Prompted to create another or logout (if create another, then some
session variables are unset) (if logout then session is destroyed)
Everything works as intended.
One user, however, has created a glitch. He/she logged out and later
returned to their still opened browser and used the back button to return
to step 2 in the process. Every email they created after using the back
button has the following problems:
1) The reply to address and the from address are both default server
address's and not the users personal email address.
2) Their is no personal signature.
Here's my questions
1) How can I prevent the use of the browser back button after someone
logs out?
2) If, after a user has attained step 3, they use their back button to
change a variables value in step 2, the new value is never saved by the
session and their original entry is used in the email. How can I adjust
for people using their back buttons during the individual steps of the
script?
3) Should the header calls appear before the session_start or after?
Thanks in advance,
Roger
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Re: [PHP] Logged Out of Seesion, Then use back button
Sorry Didier, your suggestion did not solve the problem. I appreciate
the information though!
I'm still having the back button problem in the middle of using the
script.
Thanks,
Roger
Didier McGillis wrote:
http://www.php.net/manual/en/function.header.php
?php
// Date in the past
header(Expires: Mon, 26 Jul 1997 05:00:00 GMT);
// always modified
header(Last-Modified: . gmdate(D, d M Y H:i:s) . GMT);
// HTTP/1.1
header(Cache-Control: no-store, no-cache, must-revalidate);
header(Cache-Control: post-check=0, pre-check=0, false);
// HTTP/1.0
header(Pragma: no-cache);
?
From: Roger Spears [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: [PHP] Logged Out of Seesion, Then use back button
Date: Tue, 23 Sep 2003 11:51:40 -0400
Hello,
I've googled to try to find an answer to this. I've also checked the
php.net site. Perhaps I'm not using the correct search parameters.
The only suggestion I've found is the following code:
?php
header('Cache-Control: no-cache');
header('Pragma: no-cache');
?
But this doesn't seem to solve my problems.
My problem/question is as follows.
I have an email script that works in the following steps:
1) Login (if success then FROM and a personal email signature are
properly populated)
2) Choose specifics for the email (this populates the TO variable
and the other BODY variables)
3) Then click on preview (this creates the email with all the current
variables, on the screen for viewing)
4) Then send the email
5) Prompted to create another or logout (if create another, then some
session variables are unset) (if logout then session is destroyed)
Everything works as intended.
One user, however, has created a glitch. He/she logged out and later
returned to their still opened browser and used the back button to
return to step 2 in the process. Every email they created after
using the back button has the following problems:
1) The reply to address and the from address are both default server
address's and not the users personal email address.
2) Their is no personal signature.
Here's my questions
1) How can I prevent the use of the browser back button after
someone logs out?
2) If, after a user has attained step 3, they use their back button
to change a variables value in step 2, the new value is never saved
by the session and their original entry is used in the email. How
can I adjust for people using their back buttons during the
individual steps of the script?
3) Should the header calls appear before the session_start or after?
Thanks in advance,
Roger
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
_
MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*.
http://join.msn.com/?page=features/virus
--
Roger Spears
Technology Project Coordinator
College of Arts and Sciences
Bowling Green State University
205 Administration Bldg.
Bowling Green, OH 43403
419-372-2015
419-372-8548 fax
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RE: [PHP] Logged Out of Seesion, Then use back button
[snip] 1) How can I prevent the use of the browser back button after someone logs out? [/snip] Set a cookie on login, unset the cookie on logout. Check for cookie, if it doesn't exist display login mechanism. [snip] 2) If, after a user has attained step 3, they use their back button to change a variables value in step 2, the new value is never saved by the session and their original entry is used in the email. How can I adjust for people using their back buttons during the individual steps of the script? [/snip] You would have to disable the back button. [snip] 3) Should the header calls appear before the session_start or after? [/snip] before -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Logged Out of Seesion, Then use back button
From: Roger Spears [EMAIL PROTECTED] 1) How can I prevent the use of the browser back button after someone logs out? You don't. You never prevent the use of the back button. When someone logs in, then a session should be started with some content, like you've already mentioned. So, thoughout the process, you make sure that session is still there and complete with the appropriate content. When the user logs out, you get rid of the session and that content. Now, when they hit back, they'll still have an empty session, so your script should require them to log in again to get a correct session. 2) If, after a user has attained step 3, they use their back button to change a variables value in step 2, the new value is never saved by the session and their original entry is used in the email. How can I adjust for people using their back buttons during the individual steps of the script? Again, you can't (shouldn't) stop people from using the back button. There is something wrong with your logic if the values are not saved when step 2 is submitted. If shouldn't matter if step 3 has already been completed or not. 3) Should the header calls appear before the session_start or after? Doesn't matter. Just send them before any output. ---John Holmes... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
