PHP

A server-side scripting language, whose acronym stands for Personal Home Pages, purposely created and suited for adding interactive and dynamic functionality to webpages.

Resources in this category:

Code Beach
http://www.codebeach.com/

"Code Beach is your complete guide to free and open source code and tutorials for ASP, C++, C#, ColdFusion, Delphi/Kylix, Java, JavaScript, Palm, Perl, PHP, Pocket PC, Python, Visual Basic, and XML."

The Computer Technology Documentation Project
http://www.comptechdoc.org/

This site contains computer documentation and information in various technical areas including markup and web languages, operating systems, hardware, programming, and networking. This documentation is suited for beginners and experts alike.

DevCentral
http://devcentral.iftech.com/default.php

This website contains free turtorials for "the software development community" which include XML, Java, C++ and more.

DevGuru - A Developer's Resource
http://www.devguru.com/

"DevGuru is a premier developer's resource featuring a comprehensive quick reference for ASP, JavaScript, Jet SQL, Style Sheets, and VBScript, free online tutorials and product demos, and useful products - all of which can be downloaded." Site includes "'Quick Reference' documentations and 'How To' manuals, that deal with a wide variety of topics of interest to developers and computer programmers."

Diving into PHP: Video Series
http://blog.themeforest.net/screencasts/diving-into-php-vide...

Get started with PHP with this visual introduction to the basics.

ProgrammingTutorials.com
http://www.programmingtutorials.com/

A guide to free computer programming tutorials on the Internet. Includes briefly annotated lists of tutorials for many programming languages, including HTML, Perl, Java, and more.

SitePoint
http://www.sitepoint.com/

Compilation of articles and blog entries on a variety of web development topics: HTML, CSS, web design, JavaScript, Flash, server- and client-side coding, and much more. Information ranges from basic to advanced. Also includes handy CSS, HTML, and JavaScript references.

W3Schools Online Web Tutorials
http://www.w3schools.com/default.asp

Everything you need to design and produce a website. Comprehensive, step-by-step tutorials cover all steps of website creation for all levels of developers, from beginner to advanced. Includes links for validating the code you write to make sure it's compliant with the latest standards.

Webmonkey
http://www.webmonkey.com/

This "How-to Guide for Web Developers" contains tutorials and reference materials for those building Web sites. Covers topics such as e-business, design, HTML, JavaScript, PHP, databases, graphics and fonts, multimedia, and more.