PHP Session control problem. [Archive]

rodrigo

07-22-2004, 12:08 PM

Hi,

I have been having some problems when working with PHP Session control under my site structure.
My site structure acts as the following:

To optimize the site, the main page (index.php) is the target for all the links
of the pages inside the site. Even when sending form data from one page to another, the data (posted data) of the sending page is directed to index.php which propagates the information until it reaches the destination page.
Since the index.php (which acts as a gateway) page is loaded (by the PHP interpreter) for any request inside the site, I have been having some problems with the PHP session control. Every time a request to index.php is made, another session is created even when I propagate the session ID (by url). By the way, when I try to use "session_id ( PROPAGATED_SESSION_ID )" telling to PHP that I do want to continue an already created session, the interpreter seems to crash sending no response.

Could someone help me, please?

HardCoded

07-22-2004, 01:48 PM

So let's have a look at the session code. All you usually need is session_start();, which will handle everything.

rodrigo

07-22-2004, 02:44 PM

So let's have a look at the session code. All you usually need is session_start();, which will handle everything.

Hi,

I have been done a test: The variable "VAR" has been set as a session variable which value should be reached in body.php. I have had no sucess with the following codes.

Index.php:

<?php

// re/initialize session

if ( (!$_GET["PHPSESSID"]) && (!session_id()) )
{
session_start();
}
else
{
// this ID is sent back to index.php by other
// site page
session_id( $_GET["PHPSESSID"] );
session_start();
}

// It is a test and I should get VAR value
// in body.php.
//session_register( "VAR", "TESTE");
$_SESSION["VAR"]="TESTE";

// propagate session ID to come back to index

// this ID is used for propagation
$sid = "PHPSESSID=" . session_id();

//echo( $sid ) ;

?>



<?php
// requisicoes
require( "./define.php" );
require( "./php/auth.php" );

// obtencao dos parametros
$body = $_GET[ "body" ];
$topic = $_GET[ "topic" ];
$div = $_GET[ "div" ];
$action= $_GET[ "action" ];

//
// dados de formulários
//
// os dados vindos pelo método POST
// são armazenados nessa variável.
// Como o post do formulário chega
// à página index.php, os dados são
// repassados mediante o parâmetro
// 'postdata' e método get.
// Como convencão, todos os dados de
// quaisquer que sejam os formulários
// devem estar no array 'postdata'.
// Ex: para um input do form -> name='postdata[campo_01]'
//
$postdata = expandPostData($_POST["postdata"]);

if ($body == '')
$body = "home";

?>

<html>
<head>
<title>RHER Consultoria e desenvolvimento</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="description" content=".">
<meta name="keywords" content="." >
</head>
<link type="css/text" src="/css/common.css">

<body bgcolor="#dfdfdf" >

<table height="100%" width="100%" valign=top align=center border=0 >
<tr><td valign=top>

<div align=center valign=top>
<div class=conteudo align=center>

<table height="400" width="770" valign=top align=center border=0 bgcolor="#dfdfdf" cellpadding=0 cellspacing=0>
<tr>
<td colspan=2>
<table width="770" valign=top align=center border=0 cellpadding=0 cellspacing=0 bgcolor="#FFFFFF" >

<tr height=60 width=770>
<td align=center height=60 valign=middle colspan=2>
<?php include "$sUrl/header/header.php?action=show$sid" ?>
</td>
</tr>

<tr height=20 width=770>
<td align=center height=20 valign=middle colspan=2 width=770>
<?php include "$sUrl/menu/menu.php?action=show$sid" ?>
</td>
</tr>

<tr height=400 width=770>

<td align=center valign=middle width=200 >
<?php include "$sUrl/side/side.php?$sid&body=$body&topic=$topic&div=$div&action=$action" ?>
</td>

<td align=center valign=top width=570>
<?php include "$sUrl/body/body.php?$sid&body=$body&topic=$topic&div=$div&postdata=$postdata&action=$action" ?>
</td>

</tr>

</table>
</td>
</tr>

<tr>
<td width=200 valign=top>/images/footer_left.gif</td>
<td align=center height="26" valign=middle width=570>
<table valign=middle align=center border=0 cellpadding=0 cellspacing=0 width=570>
<tr>
<td bgcolor=#AEC1E7 width=550>
<?php include "$sUrl/footer/footer.php?action=show" ?>
</td>
<td valign=top width=20>/images/footer_right.gif</td>
</tr>

</table>
</td>
</tr>

</table>

</div>
</div>

</td></tr></table>

<?php //echo("$body
$topic
$div
$postdata"); ?>

</body>

</html>

The body.php, a direct page called by index.php is:
<?php

// re/initialize session
//session_id($_GET["PHPSESSID"]);
//session_start();

echo("
BODY:".$_GET["PHPSESSID"]);
echo("
BODY:".session_id());

// VAR value is set in index.php
echo("
BODY:".$_SESSION["VAR"]);

?>

<?php
// requisicoes
require( "../define.php" );
require( "../php/functions.php" );

// obtencao dos parametros
$body = $_GET[ "body" ];
$topic = $_GET[ "topic" ];
$action = $_GET[ "action" ];
$div = $_GET[ "div" ];

$postdata = urlencode( $_GET[ "postdata" ] );

?>

<table width=570 height=400 valign=top align=center border=0 cellpadding=10 cellspacing=0>



<tr align=right width=500 valign=top>
<td height=20>
<font class=data><?php data(); ?>.</font>
</td>
</tr>

<tr align=center width=500 valign=top height=200>
<td>
<?php include "$sUrl/$body/$body.php?body=$body&topic=$topic&div=$div&action=$action&postdata=$postdata$sid" ?>
</td>
</tr>

</table>

<?php //echo("$body
$topic
$div
$postdata"); ?>

HardCoded

07-22-2004, 03:51 PM

You are way overcomplicating things. All you need is session_start(), which will take care of starting a new session only if one is not already going.

So replace all this:

if ( (!$_GET["PHPSESSID"]) && (!session_id()) )
{
session_start();
}
else
{
// this ID is sent back to index.php by other
// site page
session_id( $_GET["PHPSESSID"] );
session_start();
}

with this:

session_start();

rodrigo

07-22-2004, 06:22 PM

You are way overcomplicating things. All you need is session_start(), which will take care of starting a new session only if one is not already going.

So replace all this:

if ( (!$_GET["PHPSESSID"]) && (!session_id()) )
{
session_start();
}
else
{
// this ID is sent back to index.php by other
// site page
session_id( $_GET["PHPSESSID"] );
session_start();
}

with this:

session_start();

Hi,

You were right!

I do have discovered my real problem:
When I have to call another page, like body.php, I've been using something like this:

include "http://127.0.0.2/body.php?action=1"

Since I need to send a parameters to the included pages, I am forced to put the completed URL ("http://127.0.0.2/"), since I had had no success with

include "body.php?action=1",

With the entire URL the session data is not propagated to the target link.

Now I have just one more question: Is there a way to which
proapagate the entire session data when redirecting to
another page outside the site "address space", as the way I had been using?

Thanks a lot!

Thank you!

HardCoded

07-22-2004, 07:43 PM

The proper way to do this would be to simply
include('body.php');

Inside body.php, $_GET['action'] and $_SESSION will be available as globals.

rodrigo

07-22-2004, 07:54 PM

The proper way to do this would be to simply
include('body.php');

Inside body.php, $_GET['action'] and $_SESSION will be available as globals.

Thanks a lot!!!!!!