dynamic payment button

[phpDave]

Hi,
I'm looking to build a payment button using Amazon Simple Marketplace Payments.
Here is some code:

<input type="hidden" name="recipientEmail" value="email_address yahoo.com" >

I would like value to be a variable but having trouble making this happen or finding info on how to do this. Any help would be awesome.

[rv1990]

This is where php comes in. I assume that the email id is coming from other html or php file.Assuming your method post

<?php $email = $_POST['email']; ?>
<input type="hidden" name="recipientEmail" value=<?php echo "$email"; ?>>

This is not complete but do respond to it.

[phpDave]

Yes, Thanks for reply.
That is the way for any form but I am having trouble coding that for code generated by Amazon payments. I'll try that again but usually get error.
Do you know any tutorials?

[rv1990]

Can you just post the code if you don't mind?

[phpDave]

Can you just post the code if you don't mind?

Hello!
Sorry for delayed response, I've been very busy.
Anyway, I working again on this dynamic payment button.
Here is the code for the button:

<form action="https://authorize.payments-sandbox.amazon.com/pba/paypipeline" method="post">
  <input type="hidden" name="immediateReturn" value="1" >
  <input type="hidden" name="collectShippingAddress" value="0" >
  <input type="hidden" name="signatureVersion" value="2" >
  <input type="hidden" name="signatureMethod" value="HmacSHA256" >
  <input type="hidden" name="accessKey" value="000000000000000" >
  <input type="hidden" name="recipientEmail" value="[B]<?php echo $email ?>[/B]" >
  <input type="hidden" name="amount" value="USD 1.00" >
  <input type="hidden" name="variableMarketplaceFee" value="0.0" >
  <input type="hidden" name="signature" value="c1HRWxtRIaPnuF5WBwEZnY/UGSugDAbrItodJT278kU=" >
  <input type="hidden" name="isDonationWidget" value="0" >
  <input type="hidden" name="fixedMarketplaceFee" value="USD .20" >
  <input type="hidden" name="description" value="widget" >
  <input type="hidden" name="amazonPaymentsAccountId" value="YJNQSVYSPDZL735389RBFAXXSUB5VDUS1LNE86" >
  <input type="hidden" name="returnUrl" value="http://test-3.php" >
  <input type="hidden" name="processImmediate" value="1" >
  <input type="hidden" name="cobrandingStyle" value="logo" >
  <input type="hidden" name="abandonUrl" value="http://test-2.php" >
  <input type="image" src="http://g-ecx.images-amazon.com/images/G/01/asp/beige_small_paynow_withlogo_whitebg.gif" border="0">
</form>

In bold is where problem is at.
The var. $email is defined properly but I get error message anyway only when use var. $email
I'm thinking I am missing something but not sure what.

Thanks!

Is this right? Looks like a spoofed form to me. Is it secure?

[phpDave]

Hello Ardav!
The form is created by Amazon Payments. I just filled in text fields to create the button except for the:

<input type="hidden" name="recipientEmail" value="[B]<?php echo $email ?>[/B]" >

The url's are shortened just for the posting.
Also access key I just used all 0's for posting
If the value for recipientEmail is my email address it works fine. Only error when using variable $email. I never made a dynamic payment button before so I'm not sure if I'm missing something else.