Re: Can't copy a variable from one session to another?
| From: | Scott Bronson | Date: | Fri, 09 Apr 2004 22:40:01 +0000 |
| Subject: | Re: Can't copy a variable from one session to another? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-183034@lists.php.net to get a copy of this message | ||
After talking with some folks on IRC, it sounds like this
is effectively impossible??
I'd just like to check -- is it really impossible in PHP to
copy a variable from one session to another? I don't mind
subtle trickery.
Thanks,
- Scott
On Fri, 9 Apr 2004 02:37:05 -0700 (PDT)
"Scott Bronson" <bronson@rinspin.com> wrote:
> My web site currently uses 2 sessions: mine ("SBSESSID") and
> SquirrelMail's ("SQMSESSID"). They work perfectly on their own.
> However, I would like to allow the user to move from my area to
> SquirrelMail without re-entering a password. Therefore, I need to copy
> the password from my session to SquirrelMail's. I've been struggling with
> this for most of the night but this is the closest I've come:
>
> tst.php:
>
> <?php
> error_reporting(E_NONE); // suppress spurious cookie errors
> header("content-type: text/plain");
>
> /// set up original session, then close it
> session_name("SESS1");
> session_start();
> print_r(session_name());
> echo " " . print_r($_SESSION,true) . "\n";
> session_write_close();
> session_unset();
>
> // print new session, retrieve secret key, then close it.
> session_name("SESS2");
> session_start();
> print_r(session_name());
> echo " " . print_r($_SESSION,true) . "\n";
> $secret = $_SESSION['password'];
> session_write_close();
> session_unset();
>
> // open old session. it should exactly match the original.
> session_name("SESS1");
> session_start();
> print_r(session_name());
> echo " " . print_r($_SESSION,true) . "\n";
> ?>
>
>
> When I run this after filling in the sessions, I get:
>
> SESS1 Array
> (
> [squirrel] => mail
> )
>
> SESS2 Array
> (
> [squirrel] => mail
> )
>
> SESS1 Array
> (
> [squirrel] => mail
> )
>
> What's happening? The second time I call session_start(), instead of
> getting SESS2 like I asked for, I'm just getting SESS1 again. Even if I
> call error_reporting(E_ALL), I don't get any relevant error messages. Why
> won't session_start() open the named session?
>
> When I replace the two calls to session_write_close() with
> session_destroy(), I get this:
>
> SESS1 Array
> (
> [squirrel] => mail
> )
>
> SESS2 Array
> (
> [password] => whoa
> )
>
> SESS1 Array
> (
> )
>
> Which is correct, except that it destroys the sessions! So close and yet
> so far.
>
> Does anybody know how I can do this? I'm stumped. Thanks!
>
> - Scott
>
>
> To duplicate exactly what I did here, create 2 more scripts:
>
> s1.php:
>
> <?php
> session_name("SESS1");
> session_start();
> $_SESSION["squirrel"] = "mail";
> print_r($_SESSION);
> ?>
>
>
> s2.php:
>
> <?php
> session_name("SESS2");
> session_start();
> $_SESSION["password"] = "whoa";
> print_r($_SESSION);
> ?>
>
> Now, open s1.php in your web browser. Then open s2. php. Finally, open
> tst.php.
>
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