PHP

Concepts
What is PHP?
Data Flow
What You'll Need Tutorials 1
What You'll Need 2
Scripting vs. Viewing
Your First Script

Absolute Basics
Embedding PHP within HTML
Variables
Operators
More Complex PHP Operators Tutorials 1
More complex Operators 2

Making Choices
Introducing Conditionals: 'If' and Conditional Operators
Logical Operators
Using 'Else' and 'Elseif'
Multiple Choices: 'Switchcasebreak'
The Concise Conditional: '?' :

PHP Loops and Control Structures
Repetition: The 'For' Loop
'While' and 'Do..While' Loops
Get Me Out Of Here! 'Break' and 'Exit'

Data
Introduction to Arrays in PHP
Referencing and Sorting Arrays
Associative Arrays Tutorials 1
Associative Arrays 2
More About Arrays in PHP
Multidimensional Arrays
Joining Arrays and Splitting Strings
More String Manipulation
Replacing Text Within Strings in PHP
Introduction to Regular Expressions Tutorials 1
Introduction to Regular Expressions 2
More About Regular Expressions 1
More About Regular Expressions 2
Replacing Text Using Regular Expressions

Querying A Database with PHP
Our Sample MySQL Database
Connecting to the Database in PHP
Retrieving Data

Interacting With The User
A Simple HTML Form
A Simple PHP Search Script. Tutorials 1
A Simple PHP Search Script. 2
Validating User Input
A Search Feature With Dynamic Options 1
A Search Feature With Dynamic Options 2
An HTML Form For User Feedback
Adding The Feedback to the Database 1
Adding The Feedback to the Database 2
Validating an Email Address
Uploading a File pt. 1
Uploading a File pt. 2

Intermediate PHP Coding Techniques
Reusing Code: Functions Tutorials 1
Reusing Code: Functions 2
PHP Variable Scope
Calling By Value or By Reference
Variable Numbers of Arguments
Calling Functions Through Variables
PHP Recursive Functions
Date and Time
Using External Code Resources
PHP Error Capture: The Graceful Death Tutorials 1
Error Capture: The Graceful Death 2
Error Capture: Custom Error Handlers 1
Error Capture: Custom Error Handlers 2

PHP Sessions and Users
A Simple Login System
PHP and Sessions
Cookies in PHP
Logging a User In 1
Logging a User In 2
Logging Out
Registering a User 1
Registering a User 2

PHP Objects
PHP Classes And Objects
Properties and Methods Tutorials 1
Properties and Methods pt. 2
Constructor Functions
Inheritance 1
Inheritance 2
Polymorphism
Aggregation pt.1
Aggregation pt. 2

Building a Data-Driven Website with PHP
The Project: A Discussion Forum
Common Elements 1
Common Elements 2
Adapting the Login Page Tutorials 1
Adapting the Login Page 2
Adapting the Registration Page
View all Threads 1
View all Threads 2
Viewing a Thread 1
Viewing a Thread 2
Making or Editing A Post 1
Making or Editing A Post 2
Deleting a Post or Thread