Variable not being set. ARRRGH!

dcodotto

Hi guys...

I've been in the coding world for some time but have just started using PHP (last 4 months or so).
I'm from an Oracle/Java background, so I'm a bit confused as to why PHP is causing me trouble with variable assignment.

I'm trying to create some code to handle IPN's (Instant Payment Notifications) from Paypal.

The code seems to work great, except there are vairable that are returning NULL when I clearly have assigned them a value (in most cases, directly before I output their contents).

For example: In my code I do the following near the start of the page:

$download_key123_= rand(1000000, 99999999999999);
echo "<br>Download Key is ".$download_key123."";

This should output the download key, however, it is outputing null. This is also happening to other variables.

I've attached the code in the file php-code.txt

There are comments in there that point to various odd things.
It is very wierd.
I've been struggling on my own with this one, and have hit a brick wall.
A second set of eyes may be able to spot what I'm doing wrong.
Cheers
dcodotto

himnbandit

have you tried:

'.$download_key123.'";

or just printing the variable to see if its being set @ all?

Adam

dcodotto

yeah.... unfortunately I've tried that.

it is also happening on a number of other variables.

have you checked out the code in the file I attached?

In there there is a line which reads:

$payer_email = $_POST['payer_email']; // comment this line out. It should still work because the variable is assigned above, but for some reason it doesn't. HELP!

It seems that I may have hit some buffer issue or something... I'm not sure.
I've gone over the code with ha fine tooth comb (so i believe :-) but I can't seem to see what I've done wrong.

BTW: thanks for the quick response :-)

dcodotto

Here's a good example of the problem I am having.

Check out this code:

$address_city = $POST['address_city'];
$address_state = $POST['address_state'];
$address_zip = $POST['address_zip'];
$address_country = $POST['address_country'];
$address_status = $POST['address_status'];
$payer_email = $POST['payer_email'];
$payer_id = $POST['payer_id'];
$payer_status = $POST['payer_status'];
$notify_version = $POST['notify_version'];
$verify_sign = $POST['verify_sign'];

//These variable assignments work for some bizzare reason - the ones above dont. WIERD!!!
$item_name = $POST['item_name'];
$item_number = $POST['item_number'];
$payment_status = $POST['payment_status'];
$mc_gross = $POST['mc_gross'];
$mc_currency = $POST['mc_currency'];
$txn_id = $POST['txn_id'];
$memo = $POST['memo'];
$note = $POST['note'];
$receiver_email = $POST['receiver_email'];
$payment_date= $POST['payment_date'];

$payer_email = $_POST['payer_email']; // comment this line out. It should still work because the variable is assigned above, but for some reason it doesn't. HELP!

Now if I comment out the last line (second assignment of $payer_email), then "$payer_email is NULL.

What have I missed???
I may be going blind ;-)

dcodotto

OMG!!!!

Gues what!

I spotted it!

Silly me.

I didn;t see the underscore I inadvertantly left when cutting and pasting the code....

HAHA.

I feel siully, but I'm gald it was an easy one. :-)

Cheers