Summary of Contents: Volume I Preface ........................................................................................................ ix 1. PHP Basics .............................................................................................. 1 2. Object Oriented PHP ............................................................................. 23 3. PHP and MySQL ................................................................................... 65 4. Files ..................................................................................................... 111 5. Text Manipulation ............................................................................... 143 6. Dates and Times .................................................................................. 171 7. Images ................................................................................................. 209 8. Email ................................................................................................... 237 9. Web Page Elements.............................................................................. 253 10. Error Handling ................................................................................... 319 A. PHP Configuration .............................................................................. 339 B. Hosting Provider Checklist................................................................... 347 C. Security Checklist ................................................................................ 351 D. Working with PEAR ............................................................................ 355 Index ....................................................................................................... 363 Summary of Contents: Volume II Preface ...................................................................................................... xiii 1. Access Control ......................................................................................... 1 2. XML ...................................................................................................... 79 3. Alternative Content Types ................................................................... 169 4. Stats and Tracking ............................................................................... 221 5. Caching ............................................................................................... 241 6. Development Technique ...................................................................... 269 7. Design Patterns .................................................................................... 311 A. PHP Configuration .............................................................................. 355 B. Hosting Provider Checklist................................................................... 363 C. Security Checklist ................................................................................ 367 D. Working with PEAR ............................................................................ 371 Index ....................................................................................................... 379 The PHP Anthology Volume I: Foundations by Harry Fuecks The PHP Anthology, Volume I: Foundations by Harry Fuecks Copyright © 2003 SitePoint Pty. Ltd. Editor: Georgina Laidlaw Technical Editor: Kevin Yank Cover Design: Julian Carroll Printing History: First Edition: December 2003 Notice of Rights All rights reserved. No part of this book may be reproduced, stored in a retrieval system or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embodied in critical articles or reviews. Notice of Liability The author and publisher have made every effort to ensure the accuracy of the information herein. However, the information contained in this book is sold without warranty, either express or implied. Neither the authors and SitePoint Pty. Ltd., nor its dealers or distributors will be held liable for any damages to be caused either directly or indirectly by the instructions contained in this book, or by the software or hardware products described herein. Trademark Notice Rather than indicating every occurrence of a trademarked name as such, this book uses the names only in an editorial fashion and to the benefit of the trademark owner with no intention of infringe- ment of the trademark. Published by SitePoint Pty. Ltd. 424 Smith Street Collingwood VIC Australia 3066. Web: www.sitepoint.com Email: [email protected] ISBN 0-9579218-5-3 Printed and bound in the United States of America About The Author Harry is a technical writer, programmer, and system engineer. He has worked in corporate IT since 1994, having completed a Bachelor’s degree in Physics. He first came across PHP in 1999, while putting together a small Intranet. Today, he’s the lead developer of a corporate Extranet, where PHP plays an important role in delivering a unified platform for numerous back office systems. In his off hours he writes technical articles for SitePoint and runs phpPatterns (http://www.phppatterns.com/), a site exploring PHP application design. Originally from the United Kingdom, he now lives in Switzerland. In May, Harry became the proud father of a beautiful baby girl who keeps him busy all day (and night!) About SitePoint SitePoint specializes in publishing fun, practical and easy-to-understand content for Web Professionals. Visit http://www.sitepoint.com/ to access our books, newsletters, articles and community forums. For Natalie and Masha ii Table of Contents Preface ..................................................................................................... ix Who should read this book? ......................................................... x What’s covered in this book? ........................................................ x The Book’s Website ................................................................... xii The Code Archive............................................................... xii Updates and Errata ........................................................... xiii The SitePoint Forums................................................................ xiii The SitePoint Newsletters ......................................................... xiii Your Feedback ........................................................................... xiv Acknowledgements .................................................................... xiv 1. PHP Basics ............................................................................................. 1 Where do I get help? .................................................................... 2 Reading the Manual ............................................................. 2 Section I: Getting Started..................................................... 3 Section II: Language Reference ............................................. 3 Section III: Features ............................................................. 4 Section IV: Function Reference ............................................ 4 Further Help ........................................................................ 7 How do I fix an error that PHP finds in my script? ....................... 8 Syntax Errors ....................................................................... 9 Semantic Errors ................................................................. 10 Environment Errors ............................................................ 10 Logic Errors ....................................................................... 11 How do I include one PHP script in another? ............................. 12 Mutual Inclusion ............................................................... 12 Path Finding ...................................................................... 15 How do I write portable PHP code? ........................................... 16 Keep All Configuration Central .......................................... 17 Use the Full <?php ?> Tags............................................... 18 register_globals off ............................................................. 18 Magic Quotes .................................................................... 19 Call-Time Pass-By-Reference Off ........................................ 20 Write Reusable Code ......................................................... 20 Further Reading ......................................................................... 22 2. Object Oriented PHP ............................................................................ 23 What are the basics of object oriented PHP? .............................. 26 Classes and Objects ............................................................ 29 Understanding Scope ......................................................... 34