A beginner's guide to PHP

http://www.jemjabella.co.uk/beginners-guide-to-php-part-one
http://www.jemjabella.co.uk/beginners-guide-to-php-part-two
http://www.jemjabella.co.uk/beginners-guide-to-php-part-three

how to strip punctuation characters from a web page with PHP

Here ya go:
http://nadeausoftware.com/articles/2007/9/php_tip_how_strip_punctuation_characters_web_page

Installing PHP 4 and PHP 5 concurrently on 1 XP PC with a single Apache 2 installation

Both on port 80!!!
http://devzone.zend.com/article/633-Installing-PHP-4-and-PHP-5-concurrently-on-one-WinXP-computer-with-a-single-Apache-2-installation-both-on-the-same-good-old-port-80

TCPDF - another PHP PDF creator

maybe worth a look:
http://linux.softpedia.com/get/Programming/Libraries/TCPDF-PHP5-19177.shtml

direct link:
http://tcpdf.sf.net/

Adding Your own Items to the Context Menu (XP)

http://www.extremetech.com/article2/0,1697,1838907,00.asp

Quick 800x600 browser resize in FireFox

http://www.interspire.com/content/blogs/191/Quick-800x600-browser-resize-in-FireFox

Instant search in PHP / HTML and other documentation

http://www.gotapi.com/