[SOLVED] PHP Session variable not being transferred

[michaelh613]

I have a PHP session variable that is not being transferred to a new page. I have verified it is being populated correctly

the variable is _SESSION['equidatauri'].

 

As you can see below I have tested it by using the echo command in testing to verify the correct value (which is a url) is being populated.

 

$_SESSION['equidatauri'] = $uri;


$_SESSION['condition'] = $condition;
//echo "<br>The session url in thankyou.php to go to is " .$_SESSION['equidatauri']."<br>";
//echo "about to redirect header <br>";
echo "redirecting to Location: http://xyzdomain.com/secure/thanks.php <br>";

 

on thanks.php I have the following code

 

 

<?php
session_start();
//ob_start();
set_time_limit(120);
$debug=1;
foreach( $_SESSION as $key => $value ){
    if( !isset(${$key}) ){  // Don't clobber existing values
    ${$key} = $value;
    }
    if ($debug == 1) {
     echo "<P>$key => $value<P>\n"; //testing
    }
    }
    
    

$condition=$_SESSION['condition'];
echo "<br>The session url in thanks.php to go to is " .$_SESSION['equidatauri']."<br>";
echo "condition is $condition<br>";

$equidatauri=$_SESSION['equidatauri'];

 

Again I have used the echo command to print out the individual variable and iterated through allthe $_SESSION VALUES are displayed. It shows as being an empty field.

 

equidatauri =>

condition => Error

 

 

The session url in thanks.php to go to is

condition is Error

 

The variable url in thankyou.php to go to is

 

 

The issue must be related because I am moving a URL.  When I change the equidatauri to have something other than a url it works correctly. I appreciate any help you can give 

 

 

 

 

[PFMaBiSmAd]

Your posted code appears to have a newline before the first opening <?php tag. This will prevent the session from starting.

 

Just because you can echo a variable called $_SESSION... on a page, does not necessarily mean that it is an actual session variable.

 

Add the following two lines after your first opening <?php tag to get php to help you -

 

ini_set ("display_errors", "1");
error_reporting(E_ALL);

[michaelh613]

Your posted code appears to have a newline before the first opening <?php tag. This will prevent the session from starting.

 

Just because you can echo a variable called $_SESSION... on a page, does not necessarily mean that it is an actual session variable.

 

Add the following two lines after your first opening <?php tag to get php to help you -

 

ini_set ("display_errors", "1");
error_reporting(E_ALL);

 

There is no newline.  Just just put one accidentally in in the code when I created it here.

Session variables are set because other session variable are coming over.

Just tested hardcoding the value

$_SESSION['equidatauri'] = "http://test.com";

and that transferred as a session variable successfully.

 

I have used the echo command to verify $uri is properly being populated but it appears to be somehow related to that variable.

[michaelh613]

Is there a size limit on the variable that is being moved over.  My real URL is very large. I just put tested it again using the same variable name but setting it to http://test.com and it worked.  So the problem appears to be with the actual variable I am using. 

 

Again it populates on my first page when I echo it but does not move to the new page.

[PFMaBiSmAd]

If only one session variable is getting overwritten, you probably have register globals on and have a program/post/get/cookie variable with the same name as the session variable. Use unique variable names for program/session/post/get/cookie when register globals are on to prevent session variables from being set from outside yours script.

 

If that does not solve the problem, then your code contains logic that is overwriting the session variable. You would need to post your actual code to get specific help with it.

[michaelh613]

The variable works OK when it is set to http://test.com.  But with my large one it gives a problem.  Thats why I am thinking there is some size limitation?

[teng84]

are you sure you have a session start on each page?

[michaelh613]

Yes I have sessions start

page 1

<? 
session_start();
//ob_start();
set_time_limit(120);
$post = array_merge($_SESSION['posted_vars'],$_SESSION['posted_vars2']);

 

page 2

<?php
session_start();
ini_set ("display_errors", "1");
error_reporting(E_ALL);

 

 

[teng84]

can you show me how you set and echo those var form page to page ?

[michaelh613]

can you show me how you set and echo those var form page to page ?

 

Sure seen even stranger stuff when I hard code.  I've hardcoded the long url and it works.  Yet when I echo dynamically creating it it shows up correctly on the first page but not on the 2nd

 

page 1

 

//$_SESSION['equidatauri'] = $uri; This is setting it dynmacally
//echo "the uri is $uri <br>"; I've tested the value $uri here
$_SESSION['equidatauri'] = "https://www.testurl.net/ConsumerInterface/ExternalV2/Validate.asp?session=6ZM7Fv0ZUA2%2B%2BPvXaDrelXLI%2B34WHXsNds8gP60%2Bgmq6UBZ9Ju17okjLq67fN6NvukzrdzQrvDyJ1AUYsA9MUq21fiUJCitVR04%3D
//";
//echo "<br>The session url in thankyou.php to go to is " .$_SESSION['equidatauri']."<br>";  I've tested the session url and it works either way here
//echo "about to redirect header <br>";

$_SESSION['condition'] = $condition;
//echo "<br>The session url in thankyou.php to go to is " .$_SESSION['equidatauri']."<br>";
//echo "about to redirect header <br>";

//session_write_close();
header("Location: http://page2/secure/thanks.php");

 

page 2 looks like

 

<?php
session_start();
//ini_set ("display_errors", "1");
//error_reporting(E_ALL);
//ob_start();
set_time_limit(120);
$debug=1;
foreach( $_SESSION as $key => $value ){
if( !isset(${$key}) ){	// Don't clobber existing values
${$key} = $value;
}
if ($debug == 1) {
 echo "<P>$key => $value<P>\n";	//testing
}
}



$condition=$_SESSION['condition'];
//echo "<br>The session url in thanks.php to go to is " .$_SESSION['equidatauri']."<br>";
//echo "condition is $condition<br>";

$equidatauri=$_SESSION['equidatauri'];

echo "<br>The variable url in thanks.php to go to is $equidatauri <br>";
?>

all my session variables are passed except for $_SESSION['equidatauri'] when it is dynamically generated.

[teng84]

not sure why you need to use complete path

 

header("Location: http://page2/secure/thanks.php");

just

header("Location: thanks.php");

 

where is this thanks.php?

[michaelh613]

The actual URL is behind a password protected site. We don't expose our developement server to the public.

I don't see how using absolute or relative URL's should matter here.

 

Indeed absolute ensures no mistakes in the location.

[michaelh613]

I appreciate everyones help.  When I kept noticing hardcoding worked I decided to try

$uri = trim($uri);

 

which resolved the problem. 

Must have had some  hidden whitespace when the valure is dynamicially generated.