writeyourfirstwordpressplugin-090328165830-phpapp02

8/11/2019 writeyourfirstwordpressplugin-090328165830-phpapp02

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Write your first WordPress Plugin

Ibrahim Abdel Fattah Mohamed , aka bingorabbit www.bingorabbit.comTwitter: @bingorabbit

.. and I HEART WordPress
http://www.bingorabbit.com/http://www.bingorabbit.com/


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What is a WordPress Plugin? Why do I need to write a WordPress Plugin? Plugin files structure and headers. How to add my plugin to my WordPress log. How to contribute to WordPress !e"elopment? #uestions..

Agenda


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What is a WordPress Plugin?

$ piece of code, written to sol"e a problem or toadd a specific functionality that is not there.


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Why do I need to write a WordPress Plugin?

%ol"ing a problem. $dd new functionality &ou lo"e it, but ha"e a better implementation? 'odify it, e(tend it Want to make money?


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How can I write a plugin?

)ind a problem you need to sol"e, orsomething new to add.

Warm your hands. *hoose a descripti"e name. !ocument e"ery little thing. Think about the license. Then start coding it..


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Headers
http://path.to/plugin/http://path.to/you/http://path.to/you/http://path.to/plugin/


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Hooks are +ust..hooks.. sed to attach your plugin to a working system. Two types of Hook- $ctions and )ilters

Hooks


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$ctions, are +ust actions.. $ctions triggers an e"ent or a function. When a post is published (action) , send an email

to the administrator (function, event or reaction)

add_action('hook_name','your_function_name', [priority],

[accepted_args]);

Actions


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Filters

Database/User < ! Filters < ! Data

)ilters are also +ust..)ilters.. (ample, add some te(t +ust after e"ery post.

add_filter('hook_name','your_function_name', [priority],

[accepted_args]);


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Sample Plugin:Email Friends on ew Post


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Important !inks

Writing a Plugin /http:00code(.wordpress.org0Writing1a1Plugin 2

Plugin $PI /http:00code(.wordpress.org0Plugin1$PI 2 $ctions 3eference /

http:00code(.wordpress.org0Plugin1$PI0$ction13eference 2 )ilters 3eference /

http:00code(.wordpress.org0Plugin1$PI0)ilter13eference 2

WordPress *oding %tandards /http:00code(.wordpress.org0WordPress1*oding1%tandards 2
http://codex.wordpress.org/Writing_a_Pluginhttp://codex.wordpress.org/Plugin_APIhttp://codex.wordpress.org/Plugin_API/Action_Referencehttp://codex.wordpress.org/Plugin_API/Filter_Referencehttp://codex.wordpress.org/WordPress_Coding_Standardshttp://codex.wordpress.org/WordPress_Coding_Standardshttp://codex.wordpress.org/Plugin_API/Filter_Referencehttp://codex.wordpress.org/Plugin_API/Action_Referencehttp://codex.wordpress.org/Plugin_APIhttp://codex.wordpress.org/Writing_a_Plugin


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"ontri#uting to WordPress$$


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Why?

Impro"e the software you use.. eing a part of the community, learning and

e(perience.


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Where?

!ocumentation, aka *ode( /http:00code(.wordpress.org0*ode(:*ontributing 2

Translation /http:00code(.wordpress.org0Translating1WordPress 2

%upport )orum /http:00www.wordpress.org0support 2 I3* *hannel /4WordPress5de" on )reenode2 !e"elopment /6e(t %lide?2
http://codex.wordpress.org/Codex:Contributinghttp://codex.wordpress.org/Translating_WordPresshttp://www.wordpress.org/supporthttp://www.wordpress.org/supporthttp://codex.wordpress.org/Translating_WordPresshttp://codex.wordpress.org/Codex:Contributing


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How?

Trac /http:00trac.wordpress.org02 *ode it, refine it, or +ust test it.. 7ot a bug? 7o and report it..

http:00wordpress.org0de"elopment0899 09;0contributing5to5wordpress5part5i5de"elopment0


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Any %uestions?$$


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&hanks'$$ brahim Abdel Fattah Mohamed

www.bingorabbit.comwww.catreloaded.net

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writeyourfirstwordpressplugin-090328165830-phpapp02