On the NetTuts.com site today they've posted the first part of a series showing the integration of the BitPay bitcoin payment service into an OpenCart instance. In this first part they focus on getting some of the initial setup and administration handling set up.

In this series, we are going to look at building a Bitcoin payment system into our installation of OpenCart. Before we get started, I recommend that you practice the basic OpenCart module development if you are not familiar with how to build your own modules. Once done, you should have enough knowledge to continue with developing more advanced modules. In this series, that's exactly what we aim to do.

They start by having you download the BitPay API library and dropping it into the root directory of your OpenCart installation. Next they show you how to create an "Admin" controller with the data you'll need to pass into the view including data pulled from a model. They also create the admin view showing the current orders using bitcoin as payment, their status and options to change the speed of the API requests, status and toggling test mode on and off. Finally they include the code to save the results of the admin form submission and a bit of validation around user permissions and API key validity.

On KodeInfo.com there's a new tutorial posted showing you how to let your users pay with Bitcoin made possible using Coinbase, a Bitcoin wallet service, and BitPay, a payment gateway. Their example is a Laravel-based application.

Today we will learn how to integrate payment with bitcoins , we will integrate coinbase and bitpay to pay with bitcoins .

They walk you through the full process, including getting the accounts set up on the needed services:

• Setting up Bitpay
• Setting up Coinbase
• Creating migrations
• Views and Routes
• Config File
• Creating models
• Integrating Bitpay
• Integrating Coinbase

Each step is accompanied by screenshots or code, depending on what steps are needed. If you want to jump to the end, you can also grab the full code directly from GitHub.

The SitePoint PHP blog has posted the second part of their series about using the CoinBase API through PHP. In this new tutorial they use the API connection made in the first part via the Coinbase SDK.

In part 1, we covered basic installation and usage of Coinbase’s Bitcoin PHP API and the accompanying SDK. In this second and final part, we’ll be building our sample application.

He briefly shows how to send and receive bitcoins before diving into the application. His simple application includes a basic welcome page, a payment page, thanks page and a cancel page (in case of errors). Complete code for the HTML, CSS, and PHP (API calls) is included in the post. He shows how to create the button to start the payment process and add it to the page.

On the SitePoint PHP blog there's a recent post showing you how to combine PHP and the Coinbase API to add the ability to accept bitcoins as payment in your application. This is part one in a series of posts about making the connection and integrating it into the application.

Have you ever thought about selling your services in exchange for Bitcoins? It’s not so strange – today, many big players are actually doing it. From OkCupid to KhanAcademy, even WordPress is accepting Bitcoin. Also, some countries are thinking about it as a currency. Today, we will see how to accept Bitcoin payments on your website/application in an easy way, with the Coinbase API (and its SDK).

He briefly explains what kind of services the Coinbase API provides and talks about some of the different integration methods they offer. While they do offer a "button" you can add to the site, this tutorial focuses on the PHP integration using their SDK. They help you get it installed and show how to use the Coinbase site to set up authentication and authorization handling. He helps you get an instance of the Coinbase object ready for use and shows how to use it to interact with your account. The SDK also allows you to create the same button as the Coinbase site does, just in a more programatic way.

On NetTuts.com there's a new tutorial that shows you how to integrate an up and coming payment method into your site's flow - Bitcoin. The tutorial uses a combination of Javascript and a PHP backend and BIPS as the payment processor.

Bitcoin has definitely started to become more mainstream, and with its global reach and minimal fees, it is a payment method worth considering. In this article, we will take a look at what Bitcoin is, as well as how to start accepting them in your applications. [...] I'm not going to get into the specifics, but essentially each time a transfer of currency takes place, the money is signed with the two parties keys and then hashed, and these transactions are appended to the global log. This allows coins to be publicly traced back, and to see if the money really belongs to someone or not.

He starts off explaining what the whole bitcoin system is based on and some of the common advantages and disadvantages around it. He then gets into the actual application, creating a simple structure using the Slim microframework and a bit of HTML to make a simple payment site. The BIPS processor is used to handle the payment and the Mandrill service to send the confirmation emails. Curl requests are used to call the services, so you'll need it installed as a PHP extension to make their examples work.