Tài liệu PHP: The Good Parts: Delivering the Best of PHP- P1 pptx

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PHP: The Good Parts
Peter B. MacIntyre
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PHP: The Good Parts
by Peter B. MacIntyre
Copyright © 2010 Peter B. MacIntyre. All rights reserved.
Printed in the United States of America.
Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.
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Printing History:
April 2010:
First Edition.
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ISBN: 978-0-596-80437-4
[M]
1270572274
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I dedicate this book to my wonderful wife,
Dawn Etta Riley.
I love you!
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Table of Contents
Foreword .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii
1. The Good Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Why PHP? 1
A Brief History of PHP 1
PHP’s Place in the World 2
What Is PHP? 2
What Has Been Accomplished with PHP? 2
Basic PHP Setup 3
2. Casing the Joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Whitespace, Comments, and Basic Syntax 7
Variables: Data Types, Loose Typing, and Scope 9
Defined Constants 11
Expressions 13
Decisions, Decisions (Flow Control) 13
If...Else... 14
Switch...Case... 16
While... 18
For 19
Integration with Web Pages 19
Cookies 20
Sessions 21
$_GET 22
$_POST 23
$_REQUEST 24
3. Functions (Doing It Once) .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Parameter Passing 27
v
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Default Parameters 29
Passing by Value Versus Passing by Reference 30
Include and Require 31
Built-In Functions Versus UDFs 32
4. Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
What Is a String? 33
You Can Quote Me 34
String Functions (Best of) 36
String Trimmings 36
Character Case Management 38
String Content Searching 39
String Modification 40
5. Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Indexed Arrays 45
Associative Arrays 46
Arrays from Another Dimension 47
Arrays Can Be Dynamic 48
Traversing Arrays 50
Array Functions (Best of) 51
Sorting Arrays 51
Math-Type Functions 53
Array Potpourri 54
6. Objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Putting It into Practice 60
Magic Methods 65
$this 66
Objects in Action 67
Public, Protected, and Private 68
Getters and Setters 69
7. Database Interaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

MySQLi Object Interface 71
Retrieving Data for Display 73
PHP Data Objects 74
PDO Prepared Statements 75
Data Management on the Cheap 77
SQLite 77
File Management As a Database Alternative 79
vi | Table of Contents
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