Re: [PHP-DB] Learning PHP Sessions
one problem I see, you are trying to populate the variable after you
register it.
session_start();
$myvar = "something";
session_register('myvar');
echo $myvar;
Jim Lucas
- Original Message -
From: "Russ Michell" <[EMAIL PROTECTED]>
To: "Steve Cayford" <[EMAIL PROTECTED]>
Cc: "Matthew Tedder" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Wednesday, October 31, 2001 8:44 AM
Subject: Re: [PHP-DB] Learning PHP Sessions
>
> * session_register('myvar'); creates a session var called $myvar
> * session_start(); needs to be called from the top of each script that
will need the session var
> $myvar
> * session_destroy('myvar'); rids you of $myvar completely.
> * session_destroy('HTTP_SESSION_VARS'); rids you off *all* currently
registered session vars
>
> Note that a variable used in this way is refered to as 'myvar' and
referenced a snormal within the
> script as: $myvar
>
> HTH you out.
> Russ
>
> On Wed, 31 Oct 2001 09:55:33 -0600 Steve Cayford
<[EMAIL PROTECTED]> wrote:
>
> > This is really off-topic for this list, but...
> >
> > From my understanding of sessions, you really don't want
session_start()
> > in an if{} block. Every time you hit this script, it will have no memory
> > of any session variables until you call session_start().
> >
> > -Steve
> >
> > On Tuesday, October 30, 2001, at 02:30 PM, Matthew Tedder wrote:
> >
> > > > > /*
> > > 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...
> > >
> > > */
> > > ?>
> > > --
> > > PHP Database Mailing List (http://www.php.net/)
> > > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > > To contact the list administrators, e-mail:
[EMAIL PROTECTED]
> >
> >
> > --
> > PHP Database Mailing List (http://www.php.net/)
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> > To contact the list administrators, e-mail: [EMAIL PROTECTED]
> >
>
> #---#
>
> "Believe nothing - consider everything"
>
> Russ Michell
> Anglia Polytechnic University Webteam
> Room 1C 'The Eastings' East Road, Cambridge
>
> e: [EMAIL PROTECTED]
> w: www.apu.ac.uk/webteam
>
> www.theruss.com
>
> #---#
>
>
> --
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>
>
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Re: [PHP-DB] Learning PHP Sessions
* session_register('myvar'); creates a session var called $myvar
* session_start(); needs to be called from the top of each script that will need the
session var
$myvar
* session_destroy('myvar'); rids you of $myvar completely.
* session_destroy('HTTP_SESSION_VARS'); rids you off *all* currently registered
session vars
Note that a variable used in this way is refered to as 'myvar' and referenced a
snormal within the
script as: $myvar
HTH you out.
Russ
On Wed, 31 Oct 2001 09:55:33 -0600 Steve Cayford <[EMAIL PROTECTED]> wrote:
> This is really off-topic for this list, but...
>
> From my understanding of sessions, you really don't want session_start()
> in an if{} block. Every time you hit this script, it will have no memory
> of any session variables until you call session_start().
>
> -Steve
>
> On Tuesday, October 30, 2001, at 02:30 PM, Matthew Tedder wrote:
>
> > > /*
> > 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...
> >
> > */
> > ?>
> > --
> > PHP Database Mailing List (http://www.php.net/)
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> > To contact the list administrators, e-mail: [EMAIL PROTECTED]
>
>
> --
> PHP Database Mailing List (http://www.php.net/)
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
> To contact the list administrators, e-mail: [EMAIL PROTECTED]
>
#---#
"Believe nothing - consider everything"
Russ Michell
Anglia Polytechnic University Webteam
Room 1C 'The Eastings' East Road, Cambridge
e: [EMAIL PROTECTED]
w: www.apu.ac.uk/webteam
www.theruss.com
#---#
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Re: [PHP-DB] Learning PHP Sessions
This is really off-topic for this list, but...
From my understanding of sessions, you really don't want session_start()
in an if{} block. Every time you hit this script, it will have no memory
of any session variables until you call session_start().
-Steve
On Tuesday, October 30, 2001, at 02:30 PM, Matthew Tedder wrote:
> /*
> 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...
>
> */
> ?>
> --
> PHP Database Mailing List (http://www.php.net/)
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
> To contact the list administrators, e-mail: [EMAIL PROTECTED]
--
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To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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Re: [PHP-DB] Learning PHP Sessions
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" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, October 30, 2001 12:30 PM
Subject: [PHP-DB] Learning PHP Sessions
> /*
> 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 $PHPSESSID value..
>
> I've attached my code...
>
> */
> ?>
> --
> PHP Database Mailing List (http://www.php.net/)
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
> To contact the list administrators, e-mail: [EMAIL PROTECTED]
--
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[PHP-DB] Learning PHP Sessions
>=*/
if(!isset($PHPSESSID))
{
session_start();
session_register("UserName");
session_register("UserPage");
$UserName = "guest";
$UserPage = "Home";
};
/*=<< Main Switchboard for Pages >>=*/
include "includes/bodyhead.html";
switch($action)
{
case "Home":
ShowHome();
break;
case "Login":
ShowLogin();
break;
case "AuthUser":
AuthUser($UserName, $UserPassword);
break;
case "Logout":
ShowLogout();
break;
default:
ShowMessage("Service Not Yet Implemented");
break;
}
include "includes/bodyfoot.html";
/*=<< Function To Show Home Page >>=*/
function ShowHome()
{
include "includes/home.html";
}
/*=<< Function To Show Login Page >>=*/
function ShowLogin()
{
print "\n";
print "\n";
print "\n";
print "USER AUTHORIZATION\n";
print "\n";
print "\n";
print "\n";
print "User Name:\n";
print "\n";
print "\n";
print "\n";
print "Password:\n";
print "\n";
print "\n";
print "\n";
print " \n";
print "\n";
print "\n";
print "\n";
print "\n";
print "UNAUTHORIZED ENTRY IS PUNISHABLE BY
LAW\n";
print "\n";
print "\n";
}
/*=<< Function Authenticate User (from Login Page) >>=*/
function AuthUser($User, $User)
{
if($User == "guest")
{
ShowMessage("For guest users, authorization is not required. However, priviledges
are limited.");
}
else
{
ShowMessage("Authorization Feature Not Yet Implemented");
}
}
/*=<< Function To Logout User >>=*/
function ShowLogout()
{
ShowMessage("Your Session Has Been Terminated.\nThank You for Properly Logging Out,
$UserName!");
session_destroy();
}
/*=<< Function To Show Generic Messages >>=*/
function ShowMessage($message)
{
print "\n";
print "\n";
print "$message\n";
print "\n";
}
?>
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