Re: [PHP-DB] Learning PHP Sessions From: Szii (szii <email protected>)
Date: 10/30/01

You do not need to destroy session variables. You can
session_unregister() them, if you'd like.

$session_start();
$foo = "Hi";
session_register("foo");

Next page...

if (isset($foo))
{
  echo "$foo"; // will print "Hi" if done correctly
  session_unregister("foo");
}

Sessions are automatically destroyed when the client-side browser
shuts down and the garbage collector runs. If you want to "force"
a session deletion, use session_destroy(). Use it with caution, though,
since it's usually better to let the garbage collector do the work
periodically instead of cleaning up each session individually.

Check out http://www.php.net/manual/en/ref.session.php

'Luck

-Szii

----- Original Message -----
From: "Matthew Tedder" <matthew <email protected>>
To: <php-db <email protected>>
Sent: Tuesday, October 30, 2001 12:30 PM
Subject: [PHP-DB] Learning PHP Sessions

> <?php
> /*
> Hi,
>
> I'm new to PHP and am having trouble understanding how to use PHP
> sessions. My book tells in near the beginning how to start them and
register
> session variables, but I can't figure out how to destroy a session or
later
> read those session variables. I'm also trying to do this across frames,
but
> can't even get it to work within a single page.
>
> Here's what I've learned so far and what my problems are:
> */
>
> /* To start a session */
> session_start();
>
> /* To register a session variable */
> session_register("myvar");
> $myvar = "some value";
>
> /*
> PROBLEM #1: From the above commands, I get a $PHPSESSID that seems to be
> globally available for use, but I cannot seem to read my values back out
of
> the registered session variable from anywhere... I tried:
> */
>
> print "$myvar\n"; /* and absolutely nothing is printed */
>
> /* To destroy a session */
> session_destroy();
>
> /*
> PROBLEM #2: This says there is no session to destroy. It's rather
strange
> because I can still print the $PHPSESSID value..
>
> I've attached my code...
>
> */
> ?>

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