PHP · 20 Lessons to Successful Web Development by Nixon, Robin -- Read -- Imperial Library of Trantor

Index

Title Page Copyright Page Dedication Contents at a Glance Contents Acknowledgments Introduction Part I PHP Basics

Lesson 1 Introduction to PHP

A Little History Info for Programmers Why Is PHP so Popular? Downloading and Installing Web Browsers Choosing a Program Editor Installing a PHP Server Summary Self-Test Questions

Lesson 2 Incorporating PHP into a Web Page

Where to Place the PHP Code

In the Document Head In the Document Body Including PHP Files

Using Comments Using Semicolons Summary Self-Test Questions

Lesson 3 Learning PHP Language Syntax

Case Sensitivity Whitespace Variables

Variable Naming

String Variables Using Quotation Marks in Strings

Using Heredoc Strings

Escaping Characters Embedding Variables within a String Variable Typing and Casting Summary Self-Test Questions

Lesson 4 Using Constants and Superglobals

Using Constants

Predefined Constants The echo and print Commands

Superglobal Variables

Superglobals and Security

Other PHP Variables Summary Self-Test Questions

Lesson 5 Working with Arithmetic Operators

Arithmetic Operators

Modulus Exponentiation Incrementing and Decrementing Variables Pre-Incrementing Post-Incrementing Pre- and Post-Decrementing

Arithmetic Functions Assignment Operators Summary Self-Test Questions

Lesson 6 Applying Comparison and Logical Operators

Comparison Operators Logical Operators

Exclusive Or Boolean Negation

The Ternary Operator Bitwise Operators Operator Precedence Operator Associativity Summary Self-Test Questions

Lesson 7 Creating Arrays

Array Names Creating an Array

Assigning Values to an Array Element Using Indexes Retrieving Values Using Array Elements as Indexes Other Ways of Creating Arrays

Using Associative Arrays

Keys, Values, and Hash Tables Other Ways of Creating an Associative Array

Summary Self-Test Questions

Lesson 8 Managing Multidimensional Arrays

Creating a Two-Dimensional Array Accessing a Two-Dimensional Array

A More Practical Example

Multidimensional Associative Arrays Creating the Multidimensional Array Accessing the Arrays Summary Self-Test Questions

Lesson 9 Calling Array Functions

Using foreach() Using array_merge() Using implode() The array_walk() Function Using array_push() Using array_pop()

Using array_push() and array_pop() Together

Using array_reverse() The array_flip() Function Summary Self-Test Questions

Lesson 10 Advanced Array Manipulation

Using FILO and FIFO Arrays

Buffering Using an Array Using array_unshift() and array_shift()

Using sort()

Reversing a Sort

Using array_splice()

Removing Elements from an Array Inserting Elements into an Array Advanced Array Splicing

Summary Self-Test Questions

Lesson 11 Controlling Program Flow

The if() Construct

Omitting the Braces Positioning of Braces

The else Statement The elseif() Construct The switch() Statement Using the break Keyword Using the default Keyword

Allowing Fall-Through

Summary Self-Test Questions

Lesson 12 Looping Sections of Code

Using while() Loops

The Example in Detail

Using do … while() Loops

The Example in Detail

Using for() Loops

The Example in Detail

Breaking Out of a Loop

Breaking Out of Multiple Loops

The continue Statement

Continuing within Multiple Loops

Summary Self-Test Questions

Part II Advanced PHP

Lesson 13 Writing Functions

Using Functions

The return Statement Passing Arguments Accessing Arguments Handling Unknown Numbers of Arguments

Global and Local Variable Scope

Using Local Variables

The $GLOBALS[] Superglobal Array Global Naming Convention Summary Self-Test Questions

Lesson 14 Manipulating Objects

OOP Terminology Declaring a Class Creating an Object

Accessing Properties and Objects

Using a Constructor Destructors Object Cloning Static Methods and Properties Predefined Properties OOP Constants Property and Method Scope Applying Inheritance Using the parent Keyword Writing Subclass Constructors Using the final Keyword Summary Self-Test Questions

Lesson 15 Handling Errors and Expressions

Error Trapping Regular Expressions

Using preg_match() Using preg_match_all() Using preg_replace()

Fuzzy Matching

Matching Any Character Not Matching a Character

Summary Self-Test Questions

Lesson 16 Building Web Forms

Creating a Form

The Difference Between Post and Get Requests Security Issues with Get Requests Accessing Form Data from PHP About register_globals

Redisplaying a Form

The checkbox and select multiple Input Types Using Hidden Fields

Summary Self-Test Questions

Lesson 17 Maintaining Security

Sanitizing Input Uploading Files to a Server

The $_FILES[] Array File Security

Other Potential Insecurities Summary Self-Test Questions

Lesson 18 Accessing Cookies and Files

Using Cookies

Setting a Cookie Reading a Cookie Deleting a Cookie Combining These Three Functions

Browser Identification

The GetBrowser() Function

File Handling

Testing for a File Existing Creating or Opening a File Writing to a File Closing a File Reading from a File

Summary Self-Test Questions

Lesson 19 Advanced File Handling

Combining File Functions Saving Any Form Data

Reading from the Data File Prepopulating the Shopping List The HTML Section

Even Simpler File Accessing File Copying File Deleting File Moving Random Access

Writing to a Random Access File

Managing Directories File Locking

A Practical Example

Summary Self-Test Questions

Lesson 20 Authentication, Sessions, and Ajax

Authentication Using Sessions

Retrieving Session Variables Combining Authentication with Sessions Picking Up Session Details Closing a Session Session Security

Using Ajax Creating an Ajax Object The PostAjaxRequest() Function The GetAjaxRequest() Function The callback() Function The ajax.php Program Summary Self-Test Questions

Appendix Answers to the Self-Test Questions

Lesson 1 Answers Lesson 2 Answers Lesson 3 Answers Lesson 4 Answers Lesson 5 Answers Lesson 6 Answers Lesson 7 Answers Lesson 8 Answers Lesson 9 Answers Lesson 10 Answers Lesson 11 Answers Lesson 12 Answers Lesson 13 Answers Lesson 14 Answers Lesson 15 Answers Lesson 16 Answers Lesson 17 Answers Lesson 18 Answers Lesson 19 Answers Lesson 20 Answers

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