Apress Pro PHP Programming (2011).pdf

For your convenience Apress has placed some of the front

matter material after the index. Please use the Bookmarks

and Contents at a Glance links to access them.

Contents at a Glance

About the Authors.................................................................................................... xiv

About the Technical Reviewer .................................................................................. xv

Foreword ................................................................................................................. xvi

Acknowledgments .................................................................................................. xvii

Introducing PHP..................................................................................................... xviii

■

Chapter 1: Object Orientation .................................................................................. 1

■ Chapter 2: Exceptions and References .................................................................. 21

■

Chapter 3: Mobile PHP........................................................................................... 31

■

Chapter 4: Social Media......................................................................................... 57

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Chapter 5: Cutting Edge ......................................................................................... 93

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Chapter 6: Form Design and Management .......................................................... 111

■ Chapter 7: Database Integration I........................................................................ 127

■

Chapter 8: Database Integration II....................................................................... 161

■

Chapter 9: Database Integration III ..................................................................... 189

■ Chapter 10: Libraries ........................................................................................... 213

■

Chapter 11: Security............................................................................................ 243

■ Chapter 12: Agile Development with Zend Studio for Eclipse,

■

Bugzilla, Mylyn, and Subversion ......................................................................... 263

■

Chapter 13: Refactoring, Unit Testing, and Continuous Integration .................... 277

■ CONTENTS AT A GLANCE

■

Chapter 14: XML .................................................................................................. 323

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Chapter 15: JSON and Ajax.................................................................................. 347

■

Chapter 16: Conclusion........................................................................................ 385

■

Appendix: Regular Expressions ........................................................................... 391

Index ....................................................................................................................... 403

Introducing PHP

W elcome to yet another book on the great programming language of PHP. This book is unique in that it

focuses on higher-end materials and more advanced, cutting-edge topics. We have kept it as modern as

possible with the fast-paced world of the Internet. We take the reader from an intermediate level to a

more advanced level of this great programming language.

Origins of PHP

PHP began as a project led and designed by Mr. Rasmus Lerdorf. In June 1995, he released version 1.0 of

Personal Home Page Tools (its original product name). It was a small collection of functions that helped

to automate the creation and maintenance of simple home pages on the then-burgeoning Internet.

Since then, PHP has grown by leaps and bounds to where it is today at version 5.3.4 (at the time of

writing). PHP was one of the first web development programming languages to be open source from the

outset. Lerdorf was visionary enough to see the need and the potential for a tool and language that could

grow with this vein of the Internet community and expand far beyond it as well.

What Is PHP?

So then, what exactly is PHP? What does it look like and “feel” like in its current version? Well, in its

simplest terms, PHP is merely an HTML markup generator. If you look at the source code of a PHP-

generated web page, you will see only HTML tags; maybe some JavaScript as well, but no raw PHP code.

Of course, that is an overly simplistic view of the language that has captured between 35 and 59 percent

(depending on the source) of the languages in use for web development. Whatever number you settle

on, PHP is the single most popular web development language on the market today.

When I use the term “on the market,” you also have to appreciate that PHP is free. Yes, free! It is an

open source product, so in reality there isn’t an actual market for it. So it has done very well in terms of

popularity and range of use for a product that is led and steered by no one entity or personality.

■ Note For more information on open source, be sure to read “The Cathedral and the Bazaar” by Eric S.

Raymond for comparisons of open source products (Bazaar) and closed source products (Cathedral). You can find

it here: www.catb.org/~esr/writings/cathedral-bazaar/ .

xviii

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