Headers, session, include, - and header again?

[jodleren]

Hi all!

I have this problem, that I need to check the user (using session data
and some checks (included files)), then when ok, I can send a file to
the user.... meaning (simplified):

header("Pragma: no-cache");
header("Expires : -1");

session_start() ;
if($_SERVER['QUERY_STRING']=="logout")
session_unset() ;

include("sessio n_control.php") ;
include('classe s.php');

then, if needed, I might try this (sending a generated file to the
user):

header('Content-type: application/octet-stream');
header("Content-Disposition: attachment; filename=\"$fil ename\"");
readfile($userf ile);

But, I cannot set the headers any more. Then again, I need the
$_SESSION information to check this first, and I need some included
functions to do that.

The very ugly solution is all code in one file. There must be another
way....

Any idea how to overcome this?

WBR
Sonnich

[Rik Wasmus]

On Tue, 04 Dec 2007 08:02:57 +0100, jodleren <so*****@hot.ee wrote:

Hi all!

I have this problem, that I need to check the user (using session data
and some checks (included files)), then when ok, I can send a file to
the user.... meaning (simplified):

header("Pragma: no-cache");
header("Expires : -1");

session_start() ;
if($_SERVER['QUERY_STRING']=="logout")
session_unset() ;

include("sessio n_control.php") ;
include('classe s.php');

then, if needed, I might try this (sending a generated file to the
user):

header('Content-type: application/octet-stream');
header("Content-Disposition: attachment; filename=\"$fil ename\"");
readfile($userf ile);

But, I cannot set the headers any more. Then again, I need the
$_SESSION information to check this first, and I need some included
functions to do that.

The very ugly solution is all code in one file. There must be another
way....

Any idea how to overcome this?

Includes are not the reason you can't send any headers anymore. They fact
that they produce output is. So, take care of that, strip all output from
the included files that shouldn't be there (especially look for whitespace
outside of php tags if the problem persists). Normally, PHP will inform
you where the output started.
--
Rik Wasmus

[jodleren]

On Dec 4, 9:06 am, "Rik Wasmus" <luiheidsgoe... @hotmail.comwro te:

On Tue, 04 Dec 2007 08:02:57 +0100, jodleren <[e-mail] wrote:

Hi all!

I have this problem, that I need to check the user (using session data

....

Any idea how to overcome this?

Includes are not the reason you can't send any headers anymore. They fact
that they produce output is. So, take care of that, strip all output from
the included files that shouldn't be there (especially look for whitespace
outside of php tags if the problem persists). Normally, PHP will inform
you where the output started.

Thanks, that was it.

WBR
Sonnich

[AnrDaemon]

Greetings, jodleren.
In reply to Your message dated Tuesday, December 4, 2007, 10:02:57,

I have this problem, that I need to check the user (using session data
and some checks (included files)), then when ok, I can send a file to
the user.... meaning (simplified):

header("Pragma: no-cache");
header("Expires : -1");

session_start() ;
if($_SERVER['QUERY_STRING']=="logout")
session_unset() ;

include("sessio n_control.php") ;
include('classe s.php');

then, if needed, I might try this (sending a generated file to the
user):

header('Content-type: application/octet-stream');
header("Content-Disposition: attachment; filename=\"$fil ename\"");
readfile($userf ile);

But, I cannot set the headers any more. Then again, I need the
$_SESSION information to check this first, and I need some included
functions to do that.

The very ugly solution is all code in one file. There must be another
way....

Any idea how to overcome this?

One more idea - enable output buffering.
--
Sincerely Yours, AnrDaemon <an*******@free mail.ru>

[Rik Wasmus]

On Wed, 05 Dec 2007 16:47:51 +0100, AnrDaemon <an*******@free mail.ru
wrote:

Greetings, jodleren.
In reply to Your message dated Tuesday, December 4, 2007, 10:02:57,

>I have this problem, that I need to check the user (using session data
and some checks (included files)), then when ok, I can send a file to
the user.... meaning (simplified):

> header("Pragma: no-cache");
header("Expires : -1");

> session_start() ;
if($_SERVER['QUERY_STRING']=="logout")
session_unset() ;

> include("sessio n_control.php") ;
include('classe s.php');

>then, if needed, I might try this (sending a generated file to the
user):

> header('Content-type: application/octet-stream');
header("Content-Disposition: attachment; filename=\"$fil ename\"");
readfile($userf ile);

>But, I cannot set the headers any more. Then again, I need the
$_SESSION information to check this first, and I need some included
functions to do that.

>The very ugly solution is all code in one file. There must be another
way....

>Any idea how to overcome this?

One more idea - enable output buffering.

Which is, 99% of the time it's used to be able to send headers, just
obscuring a fault in the design of the script. It works, it's just not
good practise.
--
Rik Wasmus

[AnrDaemon]

Greetings, Rik Wasmus.
In reply to Your message dated Wednesday, December 5, 2007, 19:01:25,

Which is, 99% of the time it's used to be able to send headers, just
obscuring a fault in the design of the script. It works, it's just not
good practise.

Using page compression You're forced to use buffering anyway.
So not a big deal (But youre in fact right)
--
Sincerely Yours, AnrDaemon <an*******@free mail.ru>