Code Snippets and Repositories

45+ Excellent Code Snippet Resources and Repositories | Developer's Toolbox | Smashing Magazine

Very good collection!

Webserver on CD

Apache, Perl, PHP and MySQL from a CD | Get Apache, Perl, PHP and MySQL from a CD at SourceForge.net

PHP Mail Management Script

Script for mail management for $5.

http://www.hscripts.com/scripts/php/registrationMailer.php

Many other PHP scripts are also available here.

Calculation Scripts

This page has many calculators that can be converted to bots.

http://www.easycalculation.com/expression.php

PHP based Blogging Platform

Serendipity PHP-powered, flexible Blogging/CMS application

PHP utf-8 cheatsheet

http://www.nicknettleton.com/zine/php/php-utf-8-cheatsheet

LAMP developers who plan on creating sites that support Internationalization (i18n) should stop by this article first. Altering MySQL tables to use UTF-8, installing and configuring the PHP mbstring extension, and changes to their code are all covered.

Some PHP Tutorials

Suggested by Jaswant: Click here

Templating Engines

An article on whether templating engines should be used at all or not.

Firebug extension for PHP

FirePHP enables you to log to your Firebug Console using a simple PHP method call.

Graphing in PHP

How to create graphs in PHP

Writing Secure PHP

A very nice article on good coding with some valuable tips.

19 Most Essential and useful open source applications

19 Most Essential and useful open source applications. Most of them are top of the list projects that have an open source industry leading popularity.

PHP - A beginner's guide

PHP 101

A nice structured way to learn PHP.

PHP Application Tools

PHP Applicaton Tools, aka 'pat' is a collection of LGPL and GPL PHP-based software destined to make everyday web development easier

A useful collection of PHP Tips

There is more than one way to achieve the same result when programming in PHP. Here are many shortcuts that are useful.

phpGACL - Generic Access Control Lists

A PHP class offering Web developers a simple, yet immensely powerful "drop in" permission system to their current Web based applications.

PHP Login System

A complete login system with detailed code explanations is available here.

PHP Debugging

Very useful article on how to code properly using PHP. A must read for every PHP developer.

http://www.digital-web.com/articles/php_lumberjack/

JSON and PHP

Guarav Arora has suggested a good article to read on the usage of JSON:

http://ditio.net/2008/07/17/php-json-and-javascript-usage/

Regular Expressions

Very useful article on using regular expressions for validation of different formats like usernames, email, phone numbers etc.

http://www.plentyofcode.com/2008/07/regular-expressions-for-username-date.html