Beginning Php5

by Mercer, Dave W.; Kent, Allan; Nowicki, Steven D.; Mercer, David; Squier, Dan; Choi, Wankyu; Eide-Goodman, Heow; Lecky-Thompson, Ed; Morgan, Clark

• ISBN13: 9780764557835
• ISBN10: 0764557831
• Edition: 1st
• Format: Paperback
• Copyright: 2004-07-16
• Publisher: Wrox

Summary

What is this book about? Beginning PHP5 is a complete tutorial in PHP5's language features and functionality, beginning with the basics and building up to the design and construction of complex data-driven Web sites. Fully functioning applications are developed through the course of the book. Other features of the book include installation guide and troubleshooting tips, introduction to relational databases, practical working examples and applications, and a detailed language reference. Here are the new topics in this edition: OOP PEAR GTK MSI CLI SQLite Error handling with try/catch

Author Biography

<b>Dave W. Mercer</b> has 15 years&#8217; experience in industrial and process engineering, and systems analysis, and is CTO for a B2B, responsible for the development and deployment of online automated business services. His entire site hosting server, and the applications he builds for hosted clients are programmed in PHP using Postgres or MySQL as the database. <p> <b>Allan Kent</b> is a PHP programmer who runs his own company and is a co-author of <i>Beginning PHP 4</i>. Alan has been programming seriously for the past dozen years and, other than the single blemish when he achieved a diploma in Cobol programming is entirely self-taught. <p> <b>Steven D. Nowicki</b> is Director of Software development at The Content Project, a Santa Monica, California-based consulting firm currently developing a massive enterprise resource planning and contact management system comprising more than 300,000 lines of OOPHP code. He has a decade of experience in large-scale software development and system architecture on all major platforms. <p> <b>David Mercer</b> is a PHP programmer and contributed to <i>Beginning PHP 4</i>. He has a keen interest in all things open source ever since he managed to put together a working Beowulf cluster by nicking old computer parts from colleagues and assembling them under his desk. He has worked on Wrox open source titles about PHP, Perl, and Linux. <p> <b>Dan Squier</b> is a longtime contributor to the Wrox community and a PHP Programmer. <p> <b>Wankyu Choi</b> is an accomplished PHP programmer and lead author of <i>Beginning PHP 4</i>. He holds a Master&#8217;s degree in English/Korean interpretation and translation form the Graduate School of Translation &amp; Interpretation.

Table of Contents

Introduction	xix
Getting Up and Running	1	(30)
The Roots of PHP	1	(1)
Installing, Configuring, and Running PHP	2	(4)
System Requirements	3	(1)
php.ini, the PHP Configuration File	3	(1)
Setting Up a Test Machine	4	(1)
Network Connections	4	(1)
Where Do You Start?	4	(1)
Running PHP5	5	(1)
Installing PHP5 with Linux and Apache	6	(13)
Choosing Your Installation Method	6	(10)
Setting up Apache for PHP	16	(3)
Installing PHP5 on Windows 2000/Internet Information Server (IIS) 5	19	(7)
Downloading PHP5	20	(2)
php.ini and Extensions	22	(4)
Testing and Troubleshooting	26	(2)
Configuring PHP	28	(1)
php.ini	28	(1)
PHP Extensions	29	(1)
Caching	29	(1)
Summary	29	(1)
Exercise	30	(1)
Writing Simple Programs	31	(32)
Create a Simple PHP Program	31	(5)
Explore Some Details	33	(1)
How PHP Code Works	33	(3)
How Online PHP Programs Run	36	(1)
Web Communications: Internet Protocols and HTTP	36	(5)
TCP/IP	37	(1)
The HTTP Protocol	37	(4)
Using Variables in PHP	41	(5)
Issues Concerning Creating Variables	41	(4)
Defined Constants	45	(1)
Operators and Expressions	46	(16)
PHP Operators	46	(1)
PHP Expressions	47	(1)
Operator Types	47	(11)
Arrays	58	(4)
Summary	62	(1)
Exercises	62	(1)
PHP, HTML, and State	63	(60)
HTML Primer	63	(4)
The HTML Document Type Definition	65	(1)
The Form and Input Elements	65	(2)
Accessing PHP and HTTP Data	67	(5)
Predefined Variables	67	(2)
Variables in HTTP Request and Response	69	(1)
SuperGlobal Arrays	69	(3)
Links	72	(1)
Query Strings	73	(1)
HTML (Web) Forms	74	(34)
HTML Form Elements	74	(5)
HTML Form Fields (Controls) and PHP	79	(29)
The Concept of State	108	(12)
State Maintenance	108	(8)
Native Sessions in PHP	116	(4)
Summary	120	(1)
Exercise	120	(3)
Decisions, Loops, and Arrays	123	(64)
Designing PHP Program Logic	123	(4)
Problem Statement	123	(1)
Writing Pseudo Code	124	(1)
Boolean Logic	125	(2)
Conditional or Branching Statements	127	(18)
An Example of Branching	128	(1)
if Statements	129	(11)
switch Statements	140	(5)
Loops and Arrays	145	(40)
Loops	145	(16)
Arrays	161	(24)
Summary	185	(1)
Exercise	185	(2)
Robust and Healthy Code	187	(44)
Testing and Debugging	187	(2)
Values That Break Your Code	188	(1)
Basic Error Types	189	(1)
Debugging PHP Script	189	(9)
Understanding PHP Error Messages	189	(1)
Syntax Errors	190	(3)
Logic Errors	193	(1)
Runtime Errors	193	(5)
Debugging and Handling Errors in PHP5	198	(1)
Preventing the Display of Private Information	198	(1)
Roll-Your-Own Debugging Tools	198	(1)
Form Validation	199	(21)
Using the exit Statement	200	(4)
String Validation and Regular Expressions	204	(9)
Validating Data Entry	213	(5)
Using Regexps to Check File Path Parameters	218	(2)
Handling Errors Gracefully	220	(9)
Configuring PHP for Error Handling	220	(2)
Try/Catch---New in PHP5	222	(7)
Summary	229	(1)
Exercise	230	(1)
Writing High-Quality Code	231	(28)
Development Planning	231	(3)
Formal Software Development Processes	232	(2)
Optimizing Your Code	234	(1)
Using Coding Standards	234	(2)
Writing User-Defined Functions in PHP	236	(11)
The Structure of Functions	237	(6)
Switching Functions	243	(2)
How Values Get Inside Functions	245	(2)
Scope of Variables	247	(7)
Global and Local Variables	247	(1)
Creating Static Function Variables	248	(3)
Nesting	251	(1)
Recursion	251	(3)
The Include and Require Statements	254	(3)
Things To Be Careful About with Include and Require	257	(1)
Summary	257	(1)
Exercise	258	(1)
Files and Directories	259	(54)
File and Directory Handling	260	(1)
Working with Files	260	(9)
Opening and Closing Files	261	(3)
Getting Information About a File	264	(1)
Reading and Writing to Files	264	(5)
Reading and Writing Characters in Files	269	(3)
Reading Entire Files	272	(2)
Random Access to File Data	274	(4)
Getting Information on Files	278	(4)
Ownership and Permissions	282	(5)
Working with Files You Own	287	(3)
Splitting the Name and Path from a File	287	(1)
Copying, Renaming, and Deleting Files	288	(2)
Working with Directories	290	(10)
Other Directory Functions	292	(2)
Traversing a Directory Hierarchy	294	(1)
Creating a Directory Navigator	295	(5)
Building a Text Editor	300	(7)
Uploading Files	307	(5)
Summary	312	(1)
Exercise	312	(1)
XML	313	(30)
What Is XML?	313	(2)
XML Document Structure	315	(7)
Major Parts of an XML Document	315	(1)
Well-Formed XML Documents	316	(1)
Using XML Elements and Attributes	317	(1)
Valid XML Documents: DTDs and XML Schemas	318	(4)
Web Services	322	(1)
PHP and XML	322	(1)
PHP4 XML Functions	323	(11)
XML Parsers	329	(3)
The Document Object Model	332	(2)
PHP5 XML Functions	334	(6)
The SimpleXML Extension	334	(4)
Changing a Value with simpleXML	338	(2)
Summary	340	(1)
Exercise	341	(2)
An Introduction to Databases and SQL	343	(48)
Storing Data	344	(3)
Databases and Databases	344	(1)
Database Architectures	345	(1)
Choosing a Database	346	(1)
Setting Up MySQL	347	(4)
Installing on Windows	347	(1)
Installing on Linux	348	(2)
Configuring MySQL	350	(1)
Relational Databases	351	(9)
Normalization	352	(3)
Talking to Databases with SQL	355	(5)
A Quick Play with MySQL	360	(7)
Starting the mysql Client Program	360	(1)
Selecting a Database to Use	361	(1)
Looking at Tables Inside a Database	362	(1)
Using SQL to Look at Data	363	(1)
Manipulating Data in a Database	364	(1)
Using GRANT and REVOKE Commands	365	(2)
Connecting to MySQL from PHP	367	(1)
PHP MySQL Connectivity	368	(7)
Basic Connection Functions	368	(3)
Handling Server Errors	371	(4)
Creating Databases and Tables from MySQL	375	(13)
Creating the Sample Database and Tables with PHP	379	(4)
Altering Tables	383	(2)
Inserting Data into a Table	385	(3)
Summary	388	(3)
Retrieving Data from MySQL Using PHP	391	(26)
Retrieving Data Using PHP	391	(3)
SQL Statements for Retrieving Data	394	(10)
Server Functions	394	(1)
Retrieving Fields	395	(5)
Getting Summaries	400	(1)
More Complex Retrievals	401	(3)
Putting It All Together	404	(11)
The common_db.inc File Contents	405	(2)
The userviewer.php File Contents	407	(7)
Using the User Viewer	414	(1)
Summary	415	(2)
Using PHP to Manipulate Data in MySQL	417	(44)
Inserting Records Using PHP	417	(3)
Special Characters	418	(1)
htmlspecialchars()	419	(1)
Updating and Deleting Records in Tables	420	(2)
Working with Date and Time Type Fields	422	(4)
Getting Information on Database Tables	426	(5)
ENUM Options and Field Defaults	431	(4)
Creating a User Registration Script	435	(7)
register.php	435	(5)
Choosing Actions to Take	440	(2)
Creating an Access Logger Script	442	(7)
auth_user.php	442	(2)
access_logger.php	444	(5)
Creating a User Manager	449	(9)
userman.php	449	(8)
Choosing an Action to Take	457	(1)
Summary	458	(1)
Exercises	459	(2)
An Introduction to Object-Oriented Programming	461	(32)
What Is Object-Oriented Programming?	461	(2)
Understanding OOP Concepts	463	(27)
Classes	463	(1)
Objects	464	(13)
Inheritance	477	(9)
Interfaces	486	(3)
Encapsulation	489	(1)
Changes to 00 in PHP5	490	(1)
Summary	491	(1)
Exercises	491	(2)
Working with UML and Classes	493	(36)
The Unified Modeling Language	493	(3)
Why Would You Want to Use UML?	494	(1)
UML Software	494	(1)
Class Diagrams	495	(1)
Creating the Contact Manager	496	(7)
The Contact Manager UML Diagrams	496	(4)
Other Useful UML Diagrams	500	(3)
Creating the Entity Class	503	(6)
Putting It All Together	509	(18)
The PropertyObject Class	509	(3)
The Contact Type Classes	512	(4)
The DataManager Class	516	(1)
The Entity, Individual, and Organization Classes	517	(8)
Making Use of the System	525	(2)
Summary	527	(2)
Pear	529	(38)
What Is PEAR?	529	(5)
How Is PEAR Structured?	530	(2)
Recapping PEAR Standards	532	(2)
Installing PEAR Packages	534	(11)
Finding Your Way Around pear.php.net	534	(1)
Exploring PEAR Classes and Applications	534	(1)
Installing and Using the PEAR Package Manager	535	(10)
Using PEAR Packages	545	(21)
Building an Application Using Two PEAR Components	551	(15)
Summary	566	(1)
PHP5 and E-Mail	567	(18)
E-Mail Background	567	(1)
Internet Mail Protocols	568	(1)
Structure of an E-Mail Message	568	(2)
Sending E-Mail with PHP	570	(5)
Using the mail() Function	570	(2)
Multipurpose Internet Mail Extensions	572	(2)
PEAR Mail Libraries	574	(1)
Building a Simple PHP E-Mail Application	575	(8)
Summary	583	(1)
Exercises	583	(2)
Generating Graphics	585	(28)
Basics of Computer Graphics	585	(3)
Color Theory	586	(1)
Coordinate Systems	586	(1)
Image Types	587	(1)
Working with Raster Images	588	(10)
Creating a New Image	588	(1)
Allocating Colors	588	(1)
Basic Drawing Functions	589	(9)
Manipulating Raster Images	598	(9)
Opening an Existing Image	598	(2)
Applying a Watermark	600	(4)
Creating Thumbnails	604	(3)
Using Text in Images	607	(5)
Adding Standard Text	607	(2)
Using True Type Fonts	609	(3)
Summary	612	(1)
Exercises	612	(1)
Case Study: A PHP Logging Agent	613	(58)
Why a Logging Agent?	614	(7)
Smarty	615	(5)
PHPUnit	620	(1)
Designing the Logging Agent	621	(7)
The sitelogs.db Database	622	(2)
Using UML to Map Out the Logging Agent	624	(4)
Coding the Solution	628	(26)
Miscellaneous Scripts	628	(4)
Data-Handling Scripts	632	(13)
Validation and Error-Handling Scripts	645	(6)
Presentation Scripts and Templates	651	(3)
Testing the Application	654	(11)
Working with the Logging Agent	665	(5)
userlog.php	666	(1)
Viewing the Logging Agent	666	(4)
Summary	670	(1)
Appendix A: Answers	671	(22)
Appendix B: PHP Functions Reference	693	(72)
Appendix C: Using SQLite	765	(16)
Appendix D: ODBC	781	(14)
Appendix E: PHP CLI	795	(10)
Appendix F: Configuring PHP5	805	(24)
Index	829