Custom post type and taxonomies structure

Question

I am looking for having custom post types and "categories" (limited, known, and just only one) for post. I want the following URLs:

site.com/cpt (archive of all the posts inside custom post type) site.com/cpt/cat1 (archive of all the posts inside custom post type and category cat1) site.com/cpt/cat2 (archive of all the posts inside custom post type and category cat2)

I know how to achieve the first but not the sencond and third. Thanks for your help.

Answer 1

Just use the slug component of your rewrite argument for your custom taxonomy:

register_taxonomy([
    'rewrite' => [
        'with_front' => false,
        'slug'       => 'cpt',
    ],

    // Other args
]);