Taxonomy and Term Queries
When dealing with taxonomies ( including post categories and tags ), it's safer to rely on the generic APIs rather than the legacy helper APIs. These include:
get_taxonomies
get_terms
get_term_by
get_taxonomy
wp_get_object_terms
wp_set_object_terms
It's easier to learn one set of APIs, and think of categories and tags as just another taxonomy, rather than mixing and matching older functions such as get_category
etc.
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