The document discusses several WordPress plugin features including: - A plugin settings page using the options API that allows activating/deactivating the plugin and uninstalling to clear data - Defining products and prices for sale using a shortcode to add to pages - Viewing orders and uploading digital goods with pagination and live editing - A Skype status widget that checks status from the server with caching - A personalized client login page that can override any site page using template redirection - Integrating PayPal Express Checkout for digital goods payments with orders and new user accounts added to WordPress

1. Plugin settings page
Implemented with a standard WordPress options API. Plugin can be activated or
deactivated. Unistallation is supported and will clear all saved options, custom role
and a database schema.
Custom WordPress plugin development demonstration Goran Rakic <grakic@devbase.net>

2. Define products and prices for sale
Order form can be placed into any page or a blog post using a custom Shortcode.
Custom WordPress plugin development demonstration Goran Rakic <grakic@devbase.net>

3. View orders and upload final Digital goods
Pagination and live editing without page reload is supported. Digital goods upload is
using Wordpress Media attachments.
Custom WordPress plugin development demonstration Goran Rakic <grakic@devbase.net>

4. Skype status widget
Server side Skype status check with caching using the Transients API. Custom status
text can be set for each widget instance.
Custom WordPress plugin development demonstration Goran Rakic <grakic@devbase.net>

5. Personalized client login page
Implemented using template redirection feature, in the plugin options can be
configured to overtake any page on the site so the page is listed in site structure and
custom menus.
User management is reusing WordPress features, with a custom role for clients not
giving any capabilities.
Site template is inherited from the existing site.
Custom WordPress plugin development demonstration Goran Rakic <grakic@devbase.net>

6. PayPal Express Checkout API for Digital goods
Seamless payment experience directly in a site overlay supporting payment using
credit cards or a PayPal account. Lower fees for small payments on digital goods, no
shipping costs or address.
Each payment is instantly listed in the Orders page, a new client account is
automatically created and a configured welcome message is sent to a client's email
address.
Support for working in a production and a sandbox (testing) environment, as
configured through plugin options. Full transaction log (not including any sensitive
data) is stored with each order.
Custom WordPress plugin development demonstration Goran Rakic <grakic@devbase.net>