Software Development
PHP Session security
Saturday, August 9th, 2008While working on a recent app, I came across a problem that led me down the road of exploring PHP sessions. I had no idea what a complex subject this would turn out to be. In order to record my findings, I am making a list of the most relevant and helpful URLs I’ve encountered […]
Beware string length limitation when retrieving HTML via Ajax in Firefox!
Friday, August 1st, 2008I recently had a major mind-bending problem that took several days to diagnose. It began as the usual scenario - some code works fine in one browser, but pukes in the other. This time, however, the offending browser was Firefox, surprisingly. I will elaborate…
The particular feature of the app I was working on is based on […]
PHP $_FILES array mysteriously empty when uploading a file
Thursday, July 17th, 2008Recently, a mysterious problem crept into the web application I was developing. This particular app is a membership management tool, part of which is designed to track eligibility for membership in the organization. This particular organization requires its members to provide documentation of their attendance at continuing education events. This documentation is provided to the […]
md4, md5 and sha-1 cryptography in Javascript
Saturday, September 15th, 2007Here is a fabulous tutorial on using cryptography in Javascript to create a secure login system.
Whitespace in XML - Firefox vs. IE
Saturday, September 15th, 2007Today, for a change, I am actually more approving of this particular difference between IE and Firefox. In this case, Firefox is a little TOO rigid in standards adherence, in my opinion. I’m talking about how the two handle whitespace in XML documents.
Adhering to the absolute letter of the standards law, Firefox interprets […]
Image map coordinates calculated incorrectly by IE7
Thursday, September 6th, 2007OK, this one really pissed me off!!! For days now, I have had a problem with a complex image map. As usual, it’s the same old tune - it works fine in Firefox, but barfs in IE. I have an image map that displays several East Texas counties. As the user rolls over the different […]
Unit testing VBA projects
Monday, August 27th, 2007One of my current projects requires exclusive development in Microsoft Access using VBA. Having put my hand to the plow, so to speak, of extreme programming, I was quite unwilling to return to traditional methods of development. Yet it appeared I was constrained by my inability to drive a VBA app from outside […]