PayPal Express Checkout - 2012 Uživatelská příručka stáhnout pdf (Strana 61)

Express Checkout Integration Guide August 7, 2012 61

PayPal Name-Value Pair API Basics

Executing NVP API Operations

Encoding and decoding methods for URLs

Related information:

"URL Decoding" on page 64

List Syntax for Name-Value Pairs

The PayPal API uses a special syntax for NVP fields defined as lists.

The NVP interface to the PayPal API requires a unique name for each field. In the API, lists

are prefixed by L_. To identify an element within the list, use the offset from the beginning of

the list, starting with 0 as the first element. For example, L_DESC0 is the first line of a

description, L_DESC1, is the second line, and so on.

NOTE: Not all lists follow the L_ prefix convention; however, all lists start with 0 as the first

element.

Executing NVP API Operations

You execute a PayPal NVP API operation by submitting an HTTPS POST request to a PayPal

API server, or by using cURL or another mechanism to provide secure access between the

buyer’s browser and the PayPal API server. For example, you might implement a system in

which the buyer’s browser remains a client of your server and your server becomes a client of

the PayPal API server.

Language Method

ASP.NET Encode System.Web.HttpUtility.UrlEncode(buffer,

Encoding.Default)

Decode System.Web.HttpUtility.UrlDecode(buffer,

Encoding.Default)

Classic ASP Encode Server.URLEncode

Decode No built-in function. Several implementation examples are available on the

Internet.

Java Encode java.net.URLEncoder.encode

Decode java.net.URLDecoder.decode

PHP Encode urlencode()

Decode urldecode()

ColdFusion Encode URLEncodedFormatstring [, charset]

Decode URLDecodeurlEncodedString[, charset])

1 2 ... 56 57 58 59 60 61 62 63 64 65 66 ... 77 78

Žádné komentáře

PayPal Express Checkout - 2012 Uživatelská příručka Strana 61