WordPress 3 introduced custom taxonomies as a core feature. The following release of 3.1 included many features to enhance support of custom taxonomies. Better import and export handling, advanced queries with
tax_query, hierarchical support, body classes and a bunch of wonderful functions to play with were all part of the package.
Let’s take an in-depth look at how to create your own custom taxonomies in WordPress, including a few advanced development examples that you can begin using in your WordPress themes and plugins today.
WordPress’ custom taxonomies make it possible ...