Handling Online Payments Part 11 - Finishing Up Our Payment Form

by All Star ‎08-08-2011 08:27 AM - edited ‎10-20-2011 09:55 AM (13,833 Views)

In the final part of this series we make some small changes to make our form ready for live websites and offer a few ideas for how you can improve the form even further. Read more...

Handling Online Payments Part 10 - A Little Bit More PHP

by All Star ‎06-07-2011 09:35 AM - edited ‎10-20-2011 09:56 AM (11,658 Views)

As we near the end of our payment form saga we continue our incremental improvements by refactoring our PHP code to make it easier to maintain. Read more...

Handling Online Payments Part 9 - HTML and CSS Enhancements

by All Star ‎05-17-2011 11:37 AM - edited ‎10-20-2011 09:57 AM (22,056 Views)

In this installment of our series we use HTML and CSS to enhance our form's appearance and increase usability even more.


Handling Online Payments Part 7 - Preventing Automated Form Submissions

by All Star ‎04-06-2011 07:32 AM - edited ‎10-20-2011 09:57 AM (15,236 Views)

In the first six parts of this series we have built a web form capable of handling online payments and have begun the process of refining and improving it. In Part 7 we continue to improve upon it by learning how to prevent bots from automating form submissions and potentially costing us big bucks.


Handling Online Payments Part 6 - Preventing Duplicate Submissions with POST/REDIRECT/GET

by All Star ‎03-16-2011 10:59 AM - edited ‎04-24-2012 04:41 AM (24,319 Views)

The payment form we created in the first five parts of this series is very good. But it could be better. Part 6 begins a new chapter in this series where we improve upon our payment to make it more usable, secure, and maintainable. We begin by preventing users from making duplicate form submissions by using the POST/REDIRECT/GET design pattern. 


Precision Math with PHP

by All Star ‎12-07-2010 10:50 AM - edited ‎10-20-2011 10:01 AM (8,523 Views)

Handling dollar amounts isn't as simple as adding two numbers together. PHP, and other programming languages, have limitations to how precise they can be. This blog post will show you how to do precise money calculations using PHP's BC Math extension.


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