No, you don't need to use HTTP_SESSION_VARS for anything if
register_globals is on. Sessions are very simple. You start a session,
and you register variables to be part of that session. Like this:
session_start();
session_register('a');
session_register('b');
If you have that at the top of the first page, then whatever values $a and
$b have by the time the script finishes is what will be written to the
session backend.
So, on a subsequent page you just do:
session_start();
This will see the session ID that the browser passed to it either via a
cookie or in the URL and it will go and restore the variables from the
session backend. That means that at this point you can just do:
echo $a;
echo $b;
At no point is there any need for $HTTP_SESSION_VARS nor $_SESSION if you
are sure that register_globals will always be on.
Now, if you want it to work with register_globals off, you still don't
need to use $HTTP_SESSION_VARS when setting the variables, you only need
to use it when retrieving them. So, instead of echo $a and echo $b you
would have:
echo $HTTP_SESSION_VARS['a'];
echo $HTTP_SESSION_VARS['b'];
Or, of course in newer PHP's you can use $_SESSION['a'].
Your stuff probably didn't work because you were setting the session vars
via the $HTTP_SESSION_VARS array. That works now, but it probably didn't
use to as it is a bit of a weird way to do it.
-Rasmus
On 12 Aug 2002, Petre Agenbag wrote:
> You lost me there...
> Are you saying I don't need to access those variable in that way?
> Can I simply use $variable in successive pages then?
> Surely I MUST use that notation to assign values then right?, specially
> to the session vars, right?
>
> But, just out of curiosity, why does it work fine on my newer system?
>
> Thanks
>
> On Mon, 2002-08-12 at 21:17, Rasmus Lerdorf wrote:
> > If register_globals is known to be on, why are you worrying about
> > the $HTTP_* arrays?
> >
> > On 12 Aug 2002, Petre Agenbag wrote:
> >
> > > Hi
> > > Me again
> > >
> > > Still having problems with forms not sending variables, and session
> > > variables dissapearing.
> > >
> > > I have 2 systems, one older 4.0.3 PHP which is my main webserver, so all
> > > scripts must comply with it...
> > > And the other my development server with the latest 4.1.2
> > >
> > > So, I'm trying to write scripts that will happily work on both, and I
> > > understand that I must use HTTP_POST_VARS and HTTP_SESSION_VARS in order
> > > to comply with 4.0.3.
> > >
> > > register_globals and track_vars as well as trans_sid are enabled on
> > > both.
> > >
> > > Now, take a look at the example below:
> > > index.php
> > >
> > > <form action="page2.php" method="POST" >
> > > <input type="text" name="test"><input type="submit" name="submit">
> > > </form>
> > >
> > >
> > > page2.php
> > >
> > > <?php
> > > session_start();
> > > echo ' HTTP_POST_VARS :'.$HTTP_POST_VARS["test"].'<br>';
> > > echo ' POST_VARS: '.$_POST["test"].'<br>';
> > > echo ' normal test :'.$test.'<br>';
> > > echo 'Session Value (only for
> > > re-entry):'.$HTTP_SESSION_VARS["testing"].'<br>';
> > >
> > > if ($HTTP_POST_VARS["test"]) {
> > > $HTTP_SESSION_VARS["testing"] = $HTTP_POST_VARS["test"];
> > > }
> > > echo '<a href="page3.php">Click</a>';
> > > ?>
> > >
> > > page3.php
> > >
> > > <?php
> > > session_start();
> > > echo 'Session Variable:'.$HTTP_SESSION_VARS["testing"].'<br>';
> > > echo '<a href="page4.php">Forward to test sess var further</a><br>';
> > > echo '<a href="page2.php">Back to test sess var</a><br>';
> > > ?>
> > >
> > > page4.php
> > >
> > > <?php
> > > session_start();
> > > echo 'Session Variable:'.$HTTP_SESSION_VARS["testing"].'<br>';
> > > echo '<a href="page3.php">Back to page 3 to test sess var
> > > further</a><br>';
> > > echo '<a href="page2.php">Back to page 2 to test sess var</a><br>';
> > > ?>
> > >
> > > This small test works 100% on my newer system, and I was under the
> > > impression that I coded it to be backwards compatible with my older
> > > system, BUT,
> > >
> > > look here: http://www.linuxhelp.co.za/session_test to see what it does
> > > on my working server. The scripts are identical.
> > >
> > > Please can you point out my mistakes in reasoning?
> > >
> > > Also, I want these scripts to work regardless of cookies, so if you see
> > > something that might cause problems when ppl disable cookies, plz
> > > advise.
> > >
> > >
> > >
> > > --
> > > PHP General Mailing List (http://www.php.net/)
> > > To unsubscribe, visit: http://www.php.net/unsub.php
> > >
> >
>
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