This document provides an overview of WordPress plugin development. It discusses what WordPress plugins are and their uses. It then outlines important considerations for developing a plugin such as drawing a roadmap, choosing a unique name, file structure, coding standards, database usage, security, extensibility, translations, and distribution options. The goal is to help developers create effective, secure, and sustainable WordPress plugins.

2. Plugin Development
A peek into the world of WordPress plugin development
Rakesh Lawaju Abiral Neupane Regan Khadgi
WordCamp Nepal 2015
rakeshlawaju@gmail.com abiral.neupane@gmail.com regan.khadgi1@gmail.com

3. WordPress plugin & it’s usages?
WordPress plugins are bits of software that can be uploaded to extend and
expand the functionality of your WordPress site.
- Register post type & taxonomy
- Shortcodes
- Ecommerce feature
- Sliders and gallery
- and many more

4. Let’s start
Draw roadmap
Think outside the box
Get a unique name
Files and folder structure
Coding standard
Custom tables?
Don’t forget about security
Extensibility
Translation ready

5. Draw roadmap
Failing to plan is planning to fail.
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6. Think outside the box
Give user some unique feature because there are almost 50000 plugins in
WordPress.org

7. Get a unique name
Because the name matters.

8. Files and folder structure
Keep it simple, keep it clean
A plugin can a single .php file or it can be a folder with its main file and other
additional required files and folder

9. Coding standard
There are some rules, it's good to follow.
- Single and Double Quotes
- Indentation
- Brace Style
- No Shorthand PHP Tags
- Space Usage
https://codex.wordpress.org/WordPress_Coding_Standards

10. Custom tables?
Think before you add custom tables.
Try to use default WordPress database table, as it might be enough to manage
your data. So that you won't have to create extra methods to manage data.

11. Don’t forget about security
- Validating and sanitizing is must when user submits data to WordPress,
data is imported from an external feed, or data comes into WordPress
- To prevent issues like Cross-site scripting (XSS) make sure that output are
escaped like post title, post meta value, or some other data from the
database
- Prevent an unauthorized person from changing your plugin’s settings or
performing actions they are not authorized to perform.
WordPress offers two ways: nonces and capability
checks.
Image from https://pixabay.com/p-538715/

12. Extensibility
Plugin should allow developers to easily tie their own code.

13. Translation ready
Don't lose your potential user

14. How you are offering your plugin?
After you have successfully developed a plugin it can be offered in many ways to
the users. Some of them are:
- Free
- Freemium
- Premium

15. The sky's the limit
and let’s give back to community

16. Hope you
found it useful Thank you!