Reply to Re: Can't read $_SESSION variables set by previous request, AJAX

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Posted by Evil Otto on 02/19/07 03:32

session_start() is called exactly once, at the beginning of the main
script.

There are multiple requests, but there is ONE page.

I've tried putting session_start() at the beginning of the functions
that get called, but they throw "session has already been started"
errors.



On Feb 18, 9:40 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> Evil Otto wrote:
> > The only error i get is an undefined index message when the third
> > request tries to access the $_SESSION variable.
>
> > On Feb 18, 8:37 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> >> Evil Otto wrote:
> >>> I removed the ?> and <?php tags from where you saw the whitespace, so
> >>> there's no extraneous whitespace. Had no effect on the problem I'm
> >>> seeing; the third request still cannot see changes to the $_SESSION
> >>> variable made by the second.
> >>> On Feb 18, 3:24 pm, Kimmo Laine <s...@outolempi.net> wrote:
> >>>> Evil Otto kirjoitti:
> >>>>> There's no output going to the browser before session_start(). The
> >>>>> top of my script looks like this:
> >>>>> --quote
> >>>>> <?php
> >>>>> error_reporting(E_ALL);
> >>>>> ini_set("display_errors","1");
> >>>>> ?>
> >>>> Output starts here cos you have a gap between two php tags. It's the
> >>>> whitespace effect.
> >>>>> <?php
> >>>> --
> >>>> "En ole paha ihminen, mutta omenat ovat elinkeinoni." -Perttu Sirviö
> >>>> s...@outolempi.net | Gedoon-S @ IRCnet | rot13(x...@bhgbyrzcv.arg)
> >> And can you be sure that *NOTHING* in your include.php file generates
> >> output - including leading or trailing blanks, newline characters, etc..?
>
> >> What do you get for error messages?
>
> >> --
> >> ==================
> >> Remove the "x" from my email address
> >> Jerry Stuckle
> >> JDS Computer Training Corp.
> >> jstuck...@attglobal.net
> >> ==================
>
> In that case there are only two options. Either the second page didn't
> call session_start() before any output, or the third page didn't do it.
>
> Sessions work. If the second page properly starts the session and sets
> the session info, and the third page properly starts the session, it
> does work.
>
> I know this sounds blunt - and I'm really sorry, I don't mean to be
> blunt about it. But sessions do work. If you have a case where the
> second page sets a session variable and the third page can't read it,
> one of two things is wrong:
>
> 1. The second page didn't actually set the $_SESSION value in the
> session (possibly because session_start wasn't called early enough - but
> there could be other reasons), or
> 2. The third page can't read the $_SESSION value. In this case if it
> is set, about the only option you have is that session_start() wasn't
> called soon enough.
>
> So, if the third page (where the value is read) is correct, perhaps the
> second page (where it is set) has a problem?
>
> It's got to be one or the other.
>
> --
> ==================
> Remove the "x" from my email address
> Jerry Stuckle
> JDS Computer Training Corp.
> jstuck...@attglobal.net
> ==================

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