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Session Variables

Thread began 2/16/2012 2:48 am by salaroche | Last modified 2/16/2012 12:55 pm by Jason Byrnes | 1046 views | 7 replies |

salaroche

Session Variables

Hi:

The MM_Username variable is working well across my Search, Results, etc. pages, but I would need to create another Session Variable to pass some User-entered info around. How do I do that? I've been Googling this for hours, but I haven't found the appropriate answer.

The idea would be to pass the teacher name selected by the user in the Search Page to the rest of the pages. I've tried a few things, but I always get the error message "undefined variable". Any suggestions?

Attached please find a Search and an Update pages.

Thank you for your attention

Attached Files
SessionVariables.zip
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Jason ByrnesWebAssist

add the following code to the results page at line 1 to set a session variable for each form element from the search page:

php:
<?php

@session_start();
if(
$_SERVER["REQUEST_METHOD"] == "POST")     {
    foreach(
$_POST as $k => $v) {
        
// store as session
        
$_SESSION[$k] = $v;    
    }
}
?>




the teacher element is named S_teacherName, you can use the following code on the update page to reference the session that is created:


php:
<?php @session_start(); echo((isset($_SESSION["S_teacherName"]))?$_SESSION["S_teacherName"]:""?>
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salaroche

Jason:

Thank you for your reply.

I suppose $v stands for the name of the form element (i.e., S_teacherName) What does $K stand for? A Session Variable name I should come up with?

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Jason ByrnesWebAssist

$k stands for the key, or element, name. $v stands for the value.


so this line:
$_SESSION[$k] = $v;

creates a session that has the name of the form elements, and sets the value of the session to the value of the form element.

so your S_teacherName form element gets stored in a session named S_teacherName with the value that was posted.

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salaroche

Jason:

I Replaced both $k with S_teacherName and I created a new Session variable called S_teacherName (is that correct?) But when trying to show the content of S_teacherName I get the following error message:

Notice: Undefined index: S_teacherName in C:\xampp\htdocs\DjibOx.com\AUpdate.php on line 266

Any suggestions?

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Jason ByrnesWebAssist

you dont need to replace anything in the code i sent you.


use this code unchanged on the results page:

php:
<?php 

@session_start(); 
if(
$_SERVER["REQUEST_METHOD"] == "POST")     { 
    foreach(
$_POST as $k => $v) { 
        
// store as session 
        
$_SESSION[$k] = $v;     
    } 

?>





and this code unchanged:

php:
<?php @session_start(); echo((isset($_SESSION["S_teacherName"]))?$_SESSION["S_teacherName"]:""?>



to display the S_teacherName session variable value

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salaroche

Jason:

I entered the code unchaged in the corresponding pages, but it doesn't display anything on the AUpdate page. What I am not doing right?

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Jason ByrnesWebAssist

I have created a support ticket so we can look into this issue further.

To view and edit your support ticket, please log into your support history:
supporthistory.php

If anyone else is experiencing this same issue, please append to this thread.

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