PHP 101 (part 1): Down the Rabbit Hole [July 17, 2004]
An introduction to PHP’s variables and operators.

PHP 101 (part 2): Calling All Operators [July 18, 2004]
The rest of the PHP operators (there are many), and simple form processing.

PHP 101 (PART 3): Looping the Loop [July 19, 2004]
Basic control structures explained.

PHP 101 (PART 4): The Food Factor [July 20, 2004]
Arrays, PHP array functions, and what it all means.

PHP 101 (PART 5): Rank and File [July 21, 2004]
Everything you’re ever likely to need to know about dealing with external files from a PHP script.

PHP 101 (PART 6): Functionally Yours [July 28, 2004]
All about functions, arguments, passing by reference, globals and scope.

PHP 101 (PART 7): The Bear Necessities [August 07, 2004]
A gentle introduction to object oriented programming in PHP 4 and PHP 5.

PHP 101 (PART 8): Databases and Other Animals [August 31, 2004]
All about connecting to a MySQL database from PHP, using the mysql or mysqli extensions.

PHP 101 (PART 9): SQLite My Fire! [September 16, 2004]
Introducing another database: SQLite.

PHP 101 (part 10): A Session In The Cookie Jar [October 3, 2004]
Sessions and cookies – how to keep track of visitors to your site.

PHP 101 (part 11): Sinfully Simple [October 3, 2004]
An introduction to PHP’s easiest method for dealing with XML.

PHP 101 (part 12): Bugging Out [January 30, 2005]
Basic error handling.

PHP 101 (part 13): The Trashman Cometh [February 27, 2005]
A primer in basic security.

PHP 101 (part 14): Going to the Polls [March 8, 2005]
Putting the pieces together – a first Web application.

PHP 101 (part 15): No News is Good News [June 4, 2005]
Creating a simple RSS news aggregator.