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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 3616 | _get_term_hierarchy( $taxonomy ); |
| 3617 | |
| 3618 | /** |
| 3619 | * Fires after a taxonomy's caches have been cleaned. |
| 3620 | * |
| 3621 | * @since 4.9.0 |
| 3622 | * |
| 3623 | * @param string $taxonomy Taxonomy slug. |
| 3624 | */ |
| 3625 | do_action( 'clean_taxonomy_cache', $taxonomy ); |
| 3626 | } |
| 3627 | |
| 3628 | /** |
| 3629 | * Retrieves the cached term objects for the given object ID. |
| 3630 | * |
| 3631 | * Upstream functions (like get_the_terms() and is_object_in_term()) are |
| 3632 | * responsible for populating the object-term relationship cache. The current |
| 3633 | * function only fetches relationship data that is already in the cache. |
| 3634 | * |