Creating Your First WordPress Plugin

Creating Your First WordPress Plugin Colin Loretz

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Anatomy of a Plugin Plugin Folder Name • main php ﬁle • js folder • css folder • php folder

Anatomy of a Plugin reno-wordcamp • reno-wordcamp.php • js • css • php

Main PHP File <?php /* Plugin Name: Your Plugin Name Here Plugin URI: Your Plugin URI Version: Current Plugin Version Author: You Description: What does this do? */

reno-wordcamp.php <?php /* Plugin Name: Reno WordCamp Plugin URI: http://renotahoewordcamp.com Version: v1.0 Author: <a href = “http://colinloretz.com”>Colin Loretz</a> Description: A plugin for Reno WordCamp */

Adding an Action function addHeaderCode() { echo ʻHello from the clouds!ʼ; }

Actions & Filters //Actions add_action(ʻwp_headʼ, ʻaddHeaderCodeʼ, 1); ?>

Adding a Filter function addContent($content=ʼʼ) { $content .= ʻ<p>Colin is at WordCamp.</p>ʼ; return $content; }

Actions & Filters //Actions add_action(ʻwp_headʼ, ʻaddHeaderCodeʼ, 1); //Filters add_ﬁlter(ʻthe_contentʼ, ʻaddContentʼ); ?>

Adding a Shortcode [renowordcamp]

Adding a Shortcode function renoShortcode($att) { extract(shortcode_atts(array( 'foo' => 'no foo', 'bar' => 'default bar', ), $atts)); return quot;foo = {$foo}quot;; }

Add the Shortcode //Actions add_action(ʻwp_headʼ, ʻaddHeaderCodeʼ, 1); //Filters add_ﬁlter(ʻthe_contentʼ, ʻaddContentʼ); //Shortcodes add_shortcode('renowordcamp', 'renoShortcode');

Going Further Saving & Storing Explore Plugins Learn from others Options Post Metadata Database

Want More? • Wordpress.org (and codex) • WP-Hacker email list (google it) • WordPress Planet

Find Me @colinloretz www.colinloretz.com

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Creating Your First WordPress Plugin

by Colin Loretz

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