Dumbest question ever - Passing a variable without a form

[quadlo]

HI all,

 

Complete newbie - first ever time trying to use PHP.

 

So, here's the problem - I have a piece of data I want to pass to a php page, don't want it to show in the url, so guess i need to use $_POST.

 

I've tried the following with no success - since I'm learning php at the same time I'm trying to get something to work - I feel real stooooopid - any help would REALLY be appreciated.

 

$_POST['Barid'];

// Barid will contain a 3 character code, first is a letter, next 2 are numbers eg: "A12"

 

the code then calls the next page in and I try to retrieve the info

 

$Barid = $_POST['Barid'];

 

Result is that $Barid is blank

 

I'm sooooooooo confused.

[DeanWhitehouse]

you need to post a vairable

like

$_POST['$posting'];

$posting =  "hello";

 

if that doesn't do it , use a hidden form

[MasterACE14]

you can also use javascript to submit a form via plain text or whatever you want.

 

ACE

[AndyB]

Do remember that the $_POST array will only exist if the method used is post, i.e. use a form.

[quadlo]

you need to post a vairable

like

$_POST['$posting'];

$posting =  "hello";

 

if that doesn't do it , use a hidden form

 

Just to show how dumb a person can be - hidden form?

[play_]

You can also use a session.

[viezure]

Yeah, like

 

<input name="nr" type="hidden" value="<? echo $rand['nr']; ?>">

[DarkWater]

It still shows with a hidden form though.  I'd use sessions.

[viezure]

Like

 

$_SESSION['Barid'] = value;

 

and on the next page

 

$Barid = $_SESSION['Barid']

 

?

[947740]

Seeing as you are completely new, you need to know you need to use session_start(); at the top of your scripts to be able to use sessions.

[quadlo]

I have been working on this problem all day (over 5 hours). Seems like there aught to be a way to pass a simple variable to the next script.

 

Here is what I ended up with....

<?php

echo "Start the session....";

Session_start(); // Start the PHP session

$Barid = "A34"; // Constant for now

$_SESSION['Barid'] = $Barid; // Pass  dentifier to next page

?>

It works - THE FIRST TIME it's run!!!!!

 

When I run it again (as will happen many time in the application) I get the following error (have spent hours reading the php manual trying to figure a way out of this - no luck)

 

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at C:\xampp\htdocs\RickDB\h-3.php:2) in C:\xampp\htdocs\RickDB\h-3.php on line 4

 

Really - I can't see that it would be that hard to do what I want - I can think of literally dozens of ways to do it on mainframes (I've been in I.T. for over 40 years). Can anyone just show the 3 or 4 lines (probably) of code that will make this happen?

 

Thanks for all the previous help - but, well, since this is brand new to me - I just am not getting it.

 

Quadlo

[DeanWhitehouse]

session_start();

this needs to be on the first line of the script

on every page

[quadlo]

Thank you Blade - works now.

 

May the powers make your steps long, and your journeys short.

 

Quadlo

[947740]

Seeing as you are completely new, you need to know you need to use session_start(); at the top of your scripts to be able to use sessions.