Installed by Debian packages:
 apache 2.0.55
 libapache2-mod-php 5 5.1.6
 libapache2-mod-suphp 0.6.1-1
 mysql 5.0.24a 
 php5-mysql 5.1.6-4
 
 cvs 1.12.13
 
 emacs 21.4a
 php-elisp 1.1.0
 mmm-mode 0.4.8
 psgml 1.3.2 (provides html-mode)
 css-mode 0.11 (for editing .css files)

Installed by hand:
 javascript.el version 2.0 Beta 8 (for editing .js files)
 http://web.comhem.se/~u34308910/emacs.html#javascript