Creating and Maintaining WordPress Plugins

Creating andMark Jaquith “JAKE-with” Maintaining WordPress @markjaquith Pluginsmark@jaquith.memarkjaquith.com

Why?Pa erns! Repo… Sanity.

Why makeplugins

functions.phpis not the newmy-hacks.php

Plugins separatefunctionality fromcore and themes

Pluginscomparmentalize your code

Plugins[comparmentalize] your code

Plugins[compart][mentalize] your code

Pa erns

<?php/*Plugin Name: NAME*/

Encapsulatewith CLASS

function your_initials_long_plugin_name_do_thing() vs. function do_thing()

<?php/*Plugin Name: NAME*/class CWS_ATL_Plugin { static $instance; function __construct() { self::$instance = $this; add_action( plugins_loaded, array( $this, plugins_loaded ) ); } function plugins_loaded() { // Add actions and hooks here }}new CWS_ATL_Plugin;

function plugins_loaded() { add_filter( the_title, array( $this, the_title ), 10, 2 ); add_action( init, array( $this, init ), 5 ); add_action( omg, array( $this, is_really_tedious ), 11, 3 );}

if(!class_exists(CWS_Plugin_v2)){class CWS_Plugin_v2{functionhook($h){$p=10;$m=$this->sanitize_method($h);$b=func_get_args();unset($b[0]);foreach((array)$b as $a){if(is_int($a))$p=$a;else $m=$a;}return add_action($h,array($this,$m),$p,999);}private functionsanitize_method($m){returnstr_replace(array(.,-),array(_DOT_,_DASH_),$m);}}}

<?php/*Plugin Name: NAME*/if(!class_exists(CWS_Plugin_v2)){class CWS_Plugin_v2{function hook($h){$p=10;$m=$this->sanitize_method($h);$b=func_get_args();unset($b[0]);foreach((array)$b as $a){if(is_int($a))$p=$a;else$m=$a;}return add_action($h,array($this,$m),$p,999);}private function sanitize_method($m){returnstr_replace(array(.,-),array(_DOT_,_DASH_),$m);}}}class CWS_ATL_Plugin extends CWS_Plugin_v2 { static $instance; function __construct() { self::$instance = $this; $this->hook( plugins_loaded ); } function plugins_loaded() { // Add actions and hooks here }}new CWS_ATL_Plugin;

// BEFOREfunction plugins_loaded() { add_filter( the_title, array( $this, the_title ), 10, 2 ); add_action( init, array( $this, init ), 5 ); add_action( omg, array( $this, is_really_tedious ), 11, 3 );}// AFTERfunction plugins_loaded() { $this->hook( the_title ); $this->hook( init, 5 ); $this->hook( omg, is_really_tedious, 3 );}

Defer actions

Options in an array

const OPTIONS = my_plugin_option_name;function get_option( $key ) { $options = get_option( self::OPTIONS ); if ( isset( $options[$key] ) ) return $options[$key];}function set_option( $key, $value ) { $options = get_option( self::OPTIONS ); $options[$key] = $value; update_option( self::OPTIONS, $options );}

Plugins Repo

Community Karma

Professional Credibility

Easy reuse for you

svn checkout h p://plugins.svn.wordpress.org/{plugin-name}Plugin dev loop { svn up {hackity hack hack} svn add {new-ﬁles} svn commit -m {Message about your changes}

/trunk/ for developmentTag your releases

/trunk/readme.txtspeciﬁes the stable tag Stable tag: 2.3

=== Your Plugin ===Contributors: markjaquith, nacinbotDonate link: h p://example.com/paypalTags: foo, barRequires at least: 3.2Tested up to: 3.3.1Stable tag: 2.3Here is a short description of the plugin. This should be no morethan 150 characters. No markup here.

1. Tag in SVN2. “Repoint” /trunk/readme.txt

Support forumswordpress.org/support/view/plugin-commi er/USERNAME

assets/banner-772x250.(jpg|png)

Sanity

Slow downon the optionscowboyand/or-girl

Say hello to my li le friend:

Say hello to my li le friend: “no”

Encourage goodbehavior

Encourage g o o dbehavior

Q&AMark Jaquith “JAKE-with” @markjaquithmark@jaquith.memarkjaquith.com

http://en.wp.obenland.it	749
http://wp.obenland.it	565
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Creating and Maintaining WordPress Plugins

by Mark Jaquith

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