Integration Guide
Table Of Contents
- Preface
- How Website Payments Standard Works
- Using Your Merchant Account Profile and Tools
- The Account Profile Summary
- Branding PayPal’s Payment Pages
- Streamlining Purchases with Website Payment Preferences
- Blocking Certain Kinds of Payment
- Adding Your Credit Card Statement Name
- Getting Customer Contact Telephone Numbers
- Language Encoding Your Data
- Multi-User Access to Your PayPal Account
- PayPal-Supported Currencies
- Issuing Refunds
- Single-Item Payment: Buy Now and Donations
- Multiple-Item Payment: Shopping Cart
- Encrypted Website Payments
- Testing in the PayPal Sandbox
- Website Payments Standard HTML FORM Basics
- Website Payments Standard HTML Variables
- Country Codes
- Index
Website Payments Standard Checkout Integration Guide November 2005 99
A
Website Payments Standard HTML
Variables
This appendix details all variables for Buy Now, Donations, Add to Cart buttons and shopping
carts.
TABLE A.1 Allowed Values for cmd Variable
Value of cmd Description
_xclick A Buy Now or Donations button
_cart A shopping cart
_ext-enter For prepopulating PayPal account signup. Requires
redirect_cmd.
T
ABLE A.2 HTML Variables: IPN Control notify_url
Name Description
Required or
Optional
Character
Length
notify_url The URL to which PayPal posts information about the
transaction. Must be URL-encoded.
Optional 255
T
ABLE A.3 HTML Variables: Item Information
Name Description
Required or
Optional
Character
Length
amount The price or amount of the purchase, not including shipping,
handling, or tax. If omitted in Buy Now or Donations, customers
can enter an amount at time of purchase.
z Optional for Buy Now or Donations
z Required for Shopping Cart
See
description.
item_name Description of item. If omitted in Buy Now or Donations,
customers can enter an item name at time of purchase.
z Optional for Buy Now or Donations
z Required for Shopping Cart
See
description.
127
item_number Passthrough variable for you to track purchases or donations,
passed back to you at payment completion. If omitted in Buy
Now or Donations, no variable is passed back to you.
Optional 127