A short plugin to delete the sample content (post, comment and page) from a newly created multisite site.
Enhance the Genesis Featured Page widget to allow page excerpts to be displayed. This gives complete control of the output.
Creating a custom WooCommerce email is not difficult as much of the code is shared for each core email. Let your imagination think of the possibilities for such additional emails.
I used post meta (in a unusual way) instead of transients as regenerating the data was too expensive. And I learned about fields=’ids’ in WP_Query.
Use the $wp_filter global variable to see the functions attached to an action. And see how *not* to use it!
Allow customers with a company view orders of other customers with the same company. Based on a query on boards.ie.