This tutorial will show you how to add such a text size switcher to your Web pages using PHP and CSS, thereby immediately making your Web site more accessible and scoring you useful brownie points from everyone over the age of 50.
Step by step tutorials describing how to build Apache and PHP on various Unix flavours, including how to build every component and library they depend on.
One way to provide visually impaired users with the ability to use OCR-defeating passcodes is to stitch WAV files together. Phillip Perkins shows you how to deconstruct a group of WAV files and reconstruct one large WAV file by compiling the group.