Here are some written materials Daniel Convissor has some relation to.

SecurityFocus Summaries
Consolidating the PHP related announcements from SecurityFocus on behalf of the PHP Security Consortium, of which we are a Principal.
PEAR and PHP Manuals
Contributing to the PEAR and PHP manuals as well as editing the PEAR manual.
PEAR DB: Ripe for the Picking
An article in International PHP Magazine providing an overview of the major changes in PEAR DB.
Hands On: Inside the Tricky PHP-to-XML Project
An interview by Open Enterprise Trends for an article on parsing XML using PHP.
PHP 5 Power Programming
Technical editing of this book, written by Andi Gutmans, Stig Bakken and Derick Rethans.