4D/payment gateway integration


I'm looking for a programmer that can help me with an integration situation.

I wrote a an application (restaurant POS system) in the 4th Dimension programming language. It does credit card processing by SSL connecting to an internet gateway and passing to the gateway, credit card data contained in variables. Gateway processes the authorization and passes back auth codes which are then parsed and handled in the POS system to effectuate a restaurant credit card transaction.

This all works, but the gateway can't process standard credit card transactions in that it can't allow for adjustment of a prior authorization for tip without causing two authorizations to appear on the cardholder's statement (the actual valid charge, and the "pending" preauthorization). The preauth stays on the statement for 1-30 days and then drops off if the funds are not captured, however, it causes the cardholder to think they've been double-charged.

Therefore, we need to switch to a different online payment gateway that will allow for an authorization to be adjusted for tip without causing two authorizations to appear on cardholder's statement.

We found one that does this ([url removed, login to view]) and they have numerous API's that can be implemented, which are located here:

[url removed, login to view]

login: mercurydemo

password: mercurydem1

I do 4D code, but not .net, php, coldfusion, etc. I need somebody familiar with 4D AND one of the languages located on the above page, such that the (ALREADY WRITTEN) API can be integrated into the 4D code, or called by it, or whatever, with the end result being that a secure connection gets made from the 4D database to plugnpay, via the API, and credit card vars are sent to plugnpay for the authorization.

If you ABSOLUTELY KNOW that you can do this, please contact me asap.

Færdigheder: PHP, Web Design

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Om arbejdsgiveren:
( 0 bedømmelser ) Blue Jay, United States

Projekt-ID: #997660

2 freelancers are bidding on average $300 for this job


Hello, Please check pm. Thanks, Jerry

$300 USD in 2 dage
(27 bedømmelser)

The PHP Execute function in the 4D v12 would allow us to use the plugnpay API using a simple .php file alongside your program, if you're running a lower version we'll have to launch external processes instead and have Mere

$300 USD in 14 dage
(20 bedømmelser)