The code history of WordPress

WordCamp Paris - 2014

Who I am?• Marko Heijnen - @markoheijnen

• Working at 1&1 as their WordPress specialist

• WordPress core contributor

• GlotPress core developer - @GlotPress

• Co author of WP_Image_Editor

Our timeline• 2003 - WordPress was founded

• 2005 - WordPress 2.0 got released

• 2006 - I started to use WordPress

• 2010 - My first contribution to WordPress

• 2012 - Recent rockstar of 3.4

• 2013 - WordPress becomes 10

• 2013 - 3.8 was the 21 major release

January 17, 2014 at 08:07

The first couple of years I missed

I would say the golden years

It was founded by

Matt Mullenweg Mike Little

It all started almost 11 years ago when Matt

wrote a blog post

The comment

And WordPress was born

But what were the most important changes that happened in the code?

Post MetaWhen was this added to WordPress?

0.70• WordPress had its first release as a fork of

b2 on May 27, 2003

• A lot of code cleanups to make it more stable and faster

• Functions like texturize and manual excerpt were added

1.0 “Miles Davis”• Search engine friendly

permalinks

• Multiple categories

January 3, 2004

1.2 “Charles Mingus”• Post meta

• New plugin architecture

• Encryption of password

• Localization

• Sub categories

• Thumbnail creation

May 22, 2004

The WordPress Plugin Repository

• On January 10, 2005 the WordPress Plugin repository was announced

• It was then on WP-Plugins.org

• It was focused on Trac since it didn’t have a user friendly front-end, yet

1.5 “Billy Strayhorn”• The basic template engine

was added

• Pages was added

February 17, 2005

2.0 “Duke Ellington”• AJAX functionality got added

• Capability API

• Inline uploading

• User level options

• Pluggable object cache

• Functions.php was added

• Nonces 2.0.3

December 31, 2005

2.1 “Ella Fitzgerald”• Autosave

• All queries got checked

• More AJAX

• Cron API

• WP_Error class was added

January 22, 2007

2.2 “Stan Getz”• Widgets API

• Started using jQuery

• PHPMailer got added

• Increased the inline documentation

May 16, 2007

The first unit tests gotSeptember 20, 2007

2.3 “Dexter Gordon”• Updating system

• Taxonomy API got added

• Canonical URLs

• $wpdb->prepare()

• Activation protection

• Restructure of wp-admin folder

September 24, 2007

2.5 “Michael Brecker”• Shortcode API

• Multi-file upload with progress bar

• EXIF extraction

• Search posts and pages

• Installing/updating plugins

March 29, 2008

22 contributors

2.6 “McCoy Tyner”• Post Revisions

• Full SSL support

• Theme previews

July 15, 2008

75 contributors

2.7 “John Coltrane”• HTTP API

• Uninstall a plugin

• Settings API

• wp_page_menu()

• Plugin installer

• WordPress upgrader

December 10, 2008

144 contributors

2.8 “Chet Baker”• New Widgets API

• HTTP API updates and fixes

• Search/Install themes

June 11, 2009

2.9 “Carmen McRae”• Built-in image editor

• Post thumbnails

• Basic post type support

• Meta data for comments

• oEmbed

December 18, 2009

140> contributors

3.0 “Thelonious Monk”• WordPress MU merged

• Custom menus

• Custom post type support

• Lots of other improvements

June 17, 2010

218 contributors

3.1 “Django Reinhardt”• Admin bar

• WP_User_Query

• Advanced queries

• List-type Admin Screens

February 23, 2011

180> contributors

3.2 “George Gershwin”• Moved to PHP 5 and MySQL 5

• Speed improvements

• WP_Meta_Query

July 4, 2011

133 contributors

3.3 “Sonny Stitt”• New editor API

• Post-slug-only permalinks

• is_main_query()

• WP_Screen

• Metadata API improvements

December 12, 2011

179 contributors

3.4 “Grant Green”• Theme customizer

• wp.* XML-RPC methods

• WP_Theme

June 13, 2012

183 contributors

More awareness for out unit tests

3.5 “Elvin Jones”• WP_Image_Editor

• switch_to_blog()

• Underscore/Backbone

• WP_Comment_Query and WP_User_Query excepting meta queries

December 11, 2012

260 contributors

3.5 “Elvin Jones”• WP_Post

• Ordering by post__in

• AJAX support functions like wp_send_json_success()

December 11, 2012

260 contributors

3.6 “Oscar Peterson”• Audio/Video support

• Better control for revisions

• has_shortcode()

• Heartbeat API

August 1, 2013

225 contributors

3.7 “Count Basie”• Automattic updates

• Stronger passwords

• Language packs

• Cleanup tickets

• Better documentation

• Improved Search

• Date queries

October 24, 2013

211 contributors

3.8 “Charlie Parker”• Heartbeat performance and

API improvements

• Nginx detection

• automatic_updates_complete

December 12, 2013

188 Contributors

A great progress was made

Backwards compatibility

The market

PHP versions

Our tools• Official GIT mirrors

• Grunt

• JSHint

• Unit testing PHP and JS

• Minification

• Sass

The future• 2014 looks like a great year for new API

features like:

• WP API

• Media improvements

• Post Meta library

• More see: http://make.wordpress.org/core/features-as-plugins/

WPCentral.io• @WPCentralio

• Work in progress

• If you like to see this information back in a interactive way

• Currently building the features like:

• Download & Version history

• Timeline of features

Questions?@markoheijnen - http://markoheijnen.com