WordPress 3 Plugin Development Essentials. Create your own powerful, interactive plugins to extend and add features to your WordPress site

Spis treści książki

• WordPress 3 Plugin Development Essentials
  • Table of Contents
  • WordPress 3 Plugin Development Essentials
  • Credits
  • About the Authors
  • About the Reviewers
  • www.PacktPub.com
    • Support files, eBooks, discount offers and more
      • Why Subscribe?
      • Free Access for Packt account holders
  • Preface
    • What this book covers
    • What you need for this book
    • Who this book is for
    • Conventions
    • Reader feedback
    • Customer support
      • Downloading the example code for this book
      • Errata
      • Piracy
      • Questions
  • 1. Preparing for WordPress Development
    • WordPress background
    • Extending WordPress
    • Understanding WordPress architecture
      • Templating
      • Introducing plugins
    • Summarizing architecture
    • Tools for web development
      • WordPress
      • Mac
      • Windows
      • Text editor
      • Using an IDE
      • FTP client
      • MySQL client
    • Coding best practices
    • Basic organization
      • Isolate tasks into functions
      • Use classes
      • Use descriptive variable names
      • Use descriptive function names
      • Separate logic and display layers
      • Go modular, to a point
      • Avoid short tags
    • Planning ahead / starting development
      • Interfaces
      • Localization
      • Documentation for the developer
      • Version control
      • Environment
      • Tests
      • Security
        • Printing user-supplied data to a page
        • Using user-supplied data to construct database queries
    • Debugging
      • Clearing your browser cache
      • Updating your php.ini file
      • Configuring your wp-config.php file
      • Checking your syntax
      • Checking values
      • Exercise
    • Summary
  • 2. Anatomy of a Plugin
    • Deconstructing an existing plugin: "Hello Dolly"
      • Activating the plugin
      • Examining the hello.php file
    • Information header
      • Exercisebreaking the header
      • Location, name, and format
    • Understanding the Includes
      • Exercise parse errors
    • Bonus for the curious
    • User-defined functions
      • Exercisean evil functionless plugin
      • What just happened
      • Omitting the closing "?>" PHP tag
      • A better example: Adding functions
    • Referencing hooks via add_action() and add_filter()
    • Actions versus Filters
      • Exerciseactions and filters
      • Exercisefilters
      • Reading more
    • Summary
  • 3. Social Bookmarking
    • The overall plan
    • Proof of concept
      • Avoiding conflicting function names
    • The master plugin outline
      • The plugin information header
        • In your browserinformation header
      • Adding a link to the post content
        • Documenting our functions
        • In your browserlinking to the post content
      • Adding JavaScript to the head
        • Making our link dynamic
          • In your browserdynamic links
      • Adding a button template
      • Getting the post URL
        • In your browsergetting the post URL
      • Getting the post title
      • Getting the description
      • Getting the media type
      • Getting the post topic
        • In your browsertitle, description, and topic
    • Checking WordPress versions
    • Summary
  • 4. Ajax Search
    • What is Ajax?
    • The overall plan
    • The proof of concept mock up
      • Hooking up jQuery
        • Test that jQuery has loaded
        • What happened?
        • Using the FireBug console directly
      • Writing HTML dynamically to a target div
        • Multi-line strings
        • Viewing the generated page
        • Anonymous functions
        • Adding a div on the fly
      • Create a listener
      • Fetching data from another page
    • Creating our plugin
      • Creating index.php and activating the plugin
      • Creating our first PHP class
      • Updating index.php
      • Testing your version of PHP
      • Testing for searchable pages
      • Adding your own CSS files
      • Adding your search handler
      • Adding your own JavaScript
      • Handling Ajax search requests
      • Formatting your search results
    • Summary
  • 5. Content Rotator
    • The plan
    • Widget overview
    • Preparation
      • Activating your plugin
      • Activating the widget
        • Having problems?
      • Parents and children: extending classes
      • Objects vs. libraries: when to use static functions
    • Add custom text
    • Adding widget options
    • Generating random content
    • Expiration dates: adding options to our widget
      • Expiration dates: enforcing the shelf life
      • Explaining the $instance
    • Adding a custom manager page
      • Adding options to the custom manager page
    • Randomizing content from the database
    • Review of PHP functions used
    • Summary
  • 6. Standardized Custom Content
    • What WordPress does for you: custom fields
    • What WordPress doesnt do for you
    • Standardizing a post's custom fields
    • Creating a new plugin
      • Removing the default WordPress form for custom fields
      • Creating our own custom meta box
      • Defining custom fields
      • Generating custom form elements
      • Saving custom content
    • Having trouble saving data?
    • Displaying custom data in your Templates
      • Copying a theme
      • Modifying the theme
      • Granular display of custom fields
      • Bonus for the MySQL curious
    • Known limitations
    • Summary
  • 7. Custom Post Types
    • Background: What's in a name?
    • Understanding register_post_type()
    • Customizing our post type
      • Using shortcodes
      • Testing our shortcode
    • Customizing our plugin
    • Creating a settings shortcut link
    • Cleaning up when uninstalling
    • Summary
  • 8. Versioning Your Code with Subversion (SVN)
    • Why Subversion?
      • Understanding the terminology and concepts
      • Checking out a local working copy
      • SVN folder structure
      • Checkout, revisited
    • Setting up an SVN repository
    • Checking out a local working copy of our repo
    • Adding files
    • Committing changes to the repository
    • Overcoming errors
      • Verifying the new state of your repository
      • Adding more files to your repository
      • Removing files from the repository
      • Updating your working copy
      • Tagging a version
      • Reverting an entire project
      • Reverting a single file
    • Moving files
    • Exporting your working copy
    • Quick reference
    • Summary
  • 9. Preparing Your Plugin for Distribution
    • Public enemy number one: PHP notices
    • PHP short tags
    • Conflicting names
    • Modifying loader.php
    • Testing WordPress version
    • Testing PHP version
    • Testing MySQL version
    • Testing PHP modules
    • Testing WordPress installed plugins
    • Custom tests
    • Unit tests
    • WordPress limitations
    • Health check page
    • Storing test results in the database
    • Death to clippy: Use sensible configurations
    • Double check your interface
    • Documentation
      • Identify the purpose
      • Learning to drive: Keeping it relevant
      • Phrasebooks vs. dictionaries: Give examples
      • Analogy: The three bears
      • Analogy: PC load letter
    • The decalog of documentation
    • Summary
  • 10. Publishing Your Plugin
    • Internationalization and localization
    • Processing each message
      • Choosing a textdomain
    • Best practices
    • Working with formatting
    • More advanced messages
    • Plural vs. singular
    • More complex messages
      • Notes to translators
    • Language files
    • Creating a POT file
    • Creating translations: .po files
    • Loading a textdomain
    • Updating a translation
    • Format for the readme.txt file
      • Section installation
      • Section Frequently Asked Questions
      • Section screenshots
      • New addition videos
      • Section summary
    • Requesting and using SVN access
    • Publicity and promotion
    • Summary
  • A. Recommended Resources
    • PHP reference
    • Function reference
    • The WordPress forums
    • WebDev Studios
    • Viper007Bond
    • Kovshenin
    • SLTaylor
    • XPlus3
    • WP Engineer
    • Other plugins
  • B. WordPress API Reference
    • PHP functions
      • dirname
      • file_get_contents
      • preg_match
      • preg_replace
      • print_r
      • sprintf
      • strtolower
      • substr
    • WordPress Functions
      • __
      • _e
      • add_action
      • add_filter
      • add_meta_box
      • add_options_page
      • check_admin_referer
      • esc_html
      • get_option
      • get_post_meta
      • get_the_ID
      • register_post_type
      • remove_meta_box
      • screen_icon
      • the_content
      • the_meta
      • update_post_meta
      • wp_count_posts
      • wp_die
      • wp_nonce_field
    • Actions
      • admin_init
      • admin_menu
      • do_meta_boxes
      • init
      • save_post
      • widgets_init
      • wp_head
    • Filters
      • the_content
  • Index

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