a "firewall" for your PHP applications

http://munin.xqus.com/about

First steps with Ming (for creating flash movies on the fly with PHP)

http://www.ibm.com/developerworks/library/os-php-flash/index.html

Rediscovering the button element

http://particletree.com/features/rediscovering-the-button-element/

MP3 vs Flac vs Wav vs WMA etc.

http://www.obsessable.com/feature/mp3-vs-flac-vs-wav-audio-formats-primer/

CSS imagemaps with pop-up tooltips

http://csshowto.com/effects/css-image-maps-with-pop-up-tool-tips/

here's more CSS tooltips on an imagemap using Prototype Javascript framework
http://css-tricks.com/image-map-with-prototype-tooltips/

Backup your database to an XML file using PHP

http://davidwalsh.name/backup-database-xml-php

Creating logon scripts with KiXtart

http://articles.techrepublic.com.com/5100-10878_11-5031998.html - PART 1
http://articles.techrepublic.com.com/5100-10878_11-5033497.html - PART 2
http://articles.techrepublic.com.com/5100-10878_11-5033498.html - PART 3
http://articles.techrepublic.com.com/5100-10878_11-5033499.html - PART 4