Professional WordPress

The highest rated WordPress development and design book on the
market is back with an all new third edition.

Professional WordPress is the only WordPress book
targeted to developers, with advanced content that exploits the
full functionality of the most popular CMS in the world. Fully
updated to align with WordPress 4.1, this edition has updated
examples with all new screenshots, and full exploration of
additional tasks made possible by the latest tools and features.
You will gain insight into real projects that currently use
WordPress as an application framework, as well as the basic usage
and functionality of the system from a developer's perspective. The
book's key features include detailed information and real-world
examples that illustrate the concepts and techniques at work, plus
code downloads and examples accessible through the companion
website. Written by practicing WordPress developers, the content of
this edition focuses on real world application of WordPress
concepts that extend beyond the current WordPress version.

WordPress started in 2003 with a single bit of code to enhance
the typography of everyday writing, and has grown to be the largest
self-hosted website platform in the world. This book helps you use
WordPress efficiently, effectively, and professionally, with new
ideas and expert perspectives on full system exploitation.

• Get up to speed on the new features in WordPress 4.1

• Learn cutting edge uses of WordPress, including real-world
  projects

• Discover how to migrate existing websites to WordPress

• Understand current best practices and tools in WordPress
  development

WordPress was born out of a desire for an elegant,
well-architected personal publishing system built on PHP and MySQL,
and has evolved to be used as a full content management system
through thousands of plugins, widgets, and themes. Professional
WordPress is the essential developer's guide to this
multifunctional system.

Auteur

Brad Williams is the cofounder of WebDevStudios.com and AppPresser.com, a cohost of the DradCast WordPress podcast, and the coauthor of Professional WordPress Plugin Development. David Damstra is Vice President of Marketing Services and Creative Director for CUAnswers where his team of developers empowers clients with WordPress. *Hal Stern is an IT executive with a major healthcare company. He is coauthor of Blueprints for High Availability, also from Wiley. Wrox Professional guides are planned and written by working programmers to meet the real-world needs of programmers, developers, and IT professionals. Focused and relevant, they address the issues technology professionals face every day. They provide examples, practical solutions, and expert education in new technologies, all designed to help programmers do a better job.

Résumé
The highest rated WordPress development and design book on the market is back with an all new third edition. Professional WordPress is the only WordPress book targeted to developers, with advanced content that exploits the full functionality of the most popular CMS in the world. Fully updated to align with WordPress 4.1, this edition has updated examples with all new screenshots, and full exploration of additional tasks made possible by the latest tools and features. You will gain insight into real projects that currently use WordPress as an application framework, as well as the basic usage and functionality of the system from a developer's perspective. The book's key features include detailed information and real-world examples that illustrate the concepts and techniques at work, plus code downloads and examples accessible through the companion website. Written by practicing WordPress developers, the content of this edition focuses on real world application of WordPress concepts that extend beyond the current WordPress version.

WordPress started in 2003 with a single bit of code to enhance the typography of everyday writing, and has grown to be the largest self-hosted website platform in the world. This book helps you use WordPress efficiently, effectively, and professionally, with new ideas and expert perspectives on full system exploitation.

• Get up to speed on the new features in WordPress 4.1
• Learn cutting edge uses of WordPress, including real-world projects
• Discover how to migrate existing websites to WordPress
• Understand current best practices and tools in WordPress development
  WordPress was born out of a desire for an elegant, well-architected personal publishing system built on PHP and MySQL, and has evolved to be used as a full content management system through thousands of plugins, widgets, and themes. Professional WordPress is the essential developer's guide to this multifunctional system.

Contenu

Introduction xxxi

Chapter 1: First Post 1

What is WordPress? 1

Popularity of WordPress 3

Current State 3

Intersecting the Community 4

WordPress and the GPL 5

Content and Conversation 6

WordPress as a Content Management System 6

Creating Conversation 7

Getting Started 7

Hosting Options 8

Do it Yourself Installation 9

Installing WordPress Files 10

Database Configuration 14

Finishing Up 18

FirstTime Administration 18

First Post 20

Summary 21

Chapter 2: Code Overview 23

Downloading 23

Download Locations 23

Available Formats 24

Release Archive 24

Directory and File Structure 25

WordPress Configuration 26

wpconfig.php File 26

Advanced wpconfig.php Options 29

.htaccess 35

The .maintenance File 39

wpcontent User Playground 40

Plugins 40

Themes 41

Uploads and Media Directory 41

Upgrade Directory 41

Custom Directories 42

Summary 42

Chapter 3: Working with Wordpress Locally 43

Benefits of Working Locally 43

Typical Deployment Cycle 44

Why So Much Process? 44

Tools for Component Administration 46

Getting Your Development Stack 46

Adding WordPress to the Local Install 47

Configuration Details 48

Managing the Web Server Document Tree 49

Enabling Debug Information 50

Handling Local and Production Database 53

Creating Virtual Local Server Names 53

Local Theme and Plugin Development 56

Virtual Machines 56

Deploying Local Changes 57

Summary 59

Chapter 4: Tour of the Core 61

What's in the Core? 61

Using the Core as a Reference 62

Inline Documentation 63

Finding Functions 64

Exploring the Core 66

Deprecated Functions 69

WordPress Codex and Code Reference 70

What is the Codex? 70

Using the Codex 70

Function Reference 72

WordPress APIs 73

Codex Controversy 75

Code Reference 75

Using the Code Reference 75

Code Reference Details 76

Codex Versus Code Reference 77

Don't Hack the Core! 77

Why Not? 77

Alternatives to Hacking the Core 78

Summary 78

Chapter 5: The Loop 79

Understanding the Loop 80

From Query Parameters to SQL 81

Understanding Content in WordPress 82

Putting the Loop in Context 82

Flow of the Loop 83

Template Tags 86

Commonly Used Template Tags 86

Tag Parameters 87

Customizing the Loop 88

Using the WP_Query Object 88

Building a Custom Query 89

Adding Paging to a Loop 92

Using the pre_get_posts Hook 93

Using query_posts( ) 94

Using get_posts( ) 96

Resetting a Query 96

More Than One Loop 98

Advanced Queries 99

Global Variables 102

Post Data 102

Author Data 104

User Data 104

Environmental Data 105

Global Variables or Template Tags? 106

Working Outside the Loop 106

Summary 109

Chapter 6: Data Management 111

Database Schema 111

Table Details 113

WordPress Content Tables 114

WordPress Taxonomy Tables 115

WordPress Database Class 117

Simple Database Queries 117

Complex Database Op…