Taxonomy API Hooks

Last updated: February 13, 2026

Actions and filters for the Taxonomy API.

Taxonomy Registration

registered_taxonomy

Fires after a taxonomy is registered.

do_action( 'registered_taxonomy', string $taxonomy, array|string $object_type, array $args )

Parameter	Type	Description
`$taxonomy`	string	Taxonomy slug
`$object_type`	array\|string	Object type(s)
`$args`	array	Registration arguments

Example:

css

add_action( 'registered_taxonomy', function( $taxonomy, $object_type, $args ) {
    error_log( "Taxonomy registered: {$taxonomy}" );
}, 10, 3 );

registered_taxonomy_{$taxonomy}

Fires after a specific taxonomy is registered.

do_action( "registered_taxonomy_{$taxonomy}", string $taxonomy, array|string $object_type, array $args )

Parameter	Type	Description
`$taxonomy`	string	Taxonomy slug
`$object_type`	array\|string	Object type(s)
`$args`	array	Registration arguments

Possible hook names: registered_taxonomy_category, registered_taxonomy_post_tag

unregistered_taxonomy

Fires after a taxonomy is unregistered.

do_action( 'unregistered_taxonomy', string $taxonomy )

Parameter	Type	Description
`$taxonomy`	string	Taxonomy name

registered_taxonomy_for_object_type

Fires after a taxonomy is registered for an object type.

do_action( 'registered_taxonomy_for_object_type', string $taxonomy, string $object_type )

Parameter	Type	Description
`$taxonomy`	string	Taxonomy name
`$object_type`	string	Object type name

unregistered_taxonomy_for_object_type

Fires after a taxonomy is unregistered for an object type.

do_action( 'unregistered_taxonomy_for_object_type', string $taxonomy, string $object_type )

Parameter	Type	Description
`$taxonomy`	string	Taxonomy name
`$object_type`	string	Object type name

register_taxonomy_args

Filters the arguments for registering a taxonomy.

apply_filters( 'register_taxonomy_args', array $args, string $taxonomy, string[] $object_type )

Parameter	Type	Description
`$args`	array	Registration arguments
`$taxonomy`	string	Taxonomy key
`$object_type`	string[]	Object type names

Returns: Modified arguments array.

Example:

add_filter( 'register_taxonomy_args', function( $args, $taxonomy, $object_type ) {
    // Force all taxonomies to show in REST
    $args['show_in_rest'] = true;
    return $args;
}, 10, 3 );

register_{$taxonomy}_taxonomy_args

Filters the arguments for registering a specific taxonomy.

apply_filters( "register_{$taxonomy}_taxonomy_args", array $args, string $taxonomy, string[] $object_type )

Parameter	Type	Description
`$args`	array	Registration arguments
`$taxonomy`	string	Taxonomy key
`$object_type`	string[]	Object type names

Possible hook names: register_category_taxonomy_args, register_post_tag_taxonomy_args

Returns: Modified arguments array.

taxonomy_labels_{$taxonomy}

Filters the labels of a specific taxonomy.

apply_filters( "taxonomy_labels_{$taxonomy}", object $labels )

Parameter	Type	Description
`$labels`	object	Labels object

Returns: Modified labels object.

Term Retrieval

get_terms_defaults

Filters the terms query default arguments.

apply_filters( 'get_terms_defaults', array $defaults, string[] $taxonomies )

Parameter	Type	Description
`$defaults`	array	Default get_terms() arguments
`$taxonomies`	string[]	Taxonomy names

Returns: Modified defaults array.

get_terms_args

Filters the terms query arguments.

apply_filters( 'get_terms_args', array $args, string[] $taxonomies )

Parameter	Type	Description
`$args`	array	Query arguments
`$taxonomies`	string[]	Taxonomy names

Returns: Modified arguments array.

get_terms_fields

Filters the fields to select in the terms query.

apply_filters( 'get_terms_fields', string[] $selects, array $args, string[] $taxonomies )

Parameter	Type	Description
`$selects`	string[]	Fields to select
`$args`	array	Query arguments
`$taxonomies`	string[]	Taxonomy names

Returns: Modified selects array.

get_terms_orderby

Filters the ORDERBY clause of the terms query.

apply_filters( 'get_terms_orderby', string $orderby, array $args, string[] $taxonomies )

Parameter	Type	Description
`$orderby`	string	ORDERBY clause
`$args`	array	Query arguments
`$taxonomies`	string[]	Taxonomy names

Returns: Modified ORDERBY clause.

list_terms_exclusions

Filters the terms to exclude from the terms query.

apply_filters( 'list_terms_exclusions', string $exclusions, array $args, string[] $taxonomies )

Parameter	Type	Description
`$exclusions`	string	NOT IN clause
`$args`	array	Query arguments
`$taxonomies`	string[]	Taxonomy names

Returns: Modified exclusions SQL.

terms_clauses

Filters the terms query SQL clauses.

apply_filters( 'terms_clauses', string[] $clauses, string[] $taxonomies, array $args )

Parameter	Type	Description
`$clauses`	string[]	SQL clauses (fields, join, where, distinct, orderby, order, limits)
`$taxonomies`	string[]	Taxonomy names
`$args`	array	Query arguments

Returns: Modified clauses array.

terms_pre_query

Filters the terms array before the query takes place.

apply_filters_ref_array( 'terms_pre_query', array $terms, WP_Term_Query &$query )

Parameter	Type	Description
`$terms`	array\|null	Return array to short-circuit, null to continue
`$query`	WP_Term_Query	Query instance (by reference)

Returns: Array to short-circuit or null.

get_terms

Filters the found terms.

apply_filters( 'get_terms', array $terms, array|null $taxonomies, array $args, WP_Term_Query $term_query )

Parameter	Type	Description
`$terms`	array	Found terms
`$taxonomies`	array\|null	Taxonomy names
`$args`	array	Query arguments
`$term_query`	WP_Term_Query	Query object

Returns: Modified terms array.

get_term

Filters a taxonomy term object.

apply_filters( 'get_term', WP_Term $_term, string $taxonomy )

Parameter	Type	Description
`$_term`	WP_Term	Term object
`$taxonomy`	string	Taxonomy slug

Returns: Modified term object.

get_{$taxonomy}

Filters a taxonomy term object for a specific taxonomy.

apply_filters( "get_{$taxonomy}", WP_Term $_term, string $taxonomy )

Parameter	Type	Description
`$_term`	WP_Term	Term object
`$taxonomy`	string	Taxonomy slug

Possible hook names: get_category, get_post_tag

Returns: Modified term object.

parse_term_query

Fires after term query vars have been parsed.

do_action( 'parse_term_query', WP_Term_Query $query )

Parameter	Type	Description
`$query`	WP_Term_Query	Query instance

pre_get_terms

Fires before terms are retrieved.

php

do_action_ref_array( 'pre_get_terms', array( WP_Term_Query &$query ) )

Parameter	Type	Description
`$query`	WP_Term_Query	Query instance (by reference)

Term Creation

pre_insert_term

Filters a term before it is sanitized and inserted into the database.

apply_filters( 'pre_insert_term', string|WP_Error $term, string $taxonomy, array|string $args )

Parameter	Type	Description
`$term`	string\|WP_Error	Term name or error
`$taxonomy`	string	Taxonomy slug
`$args`	array\|string	Arguments passed to wp_insert_term()

Returns: Term name or WP_Error to abort.

wp_insert_term_data

Filters term data before it is inserted into the database.

apply_filters( 'wp_insert_term_data', array $data, string $taxonomy, array $args )

Parameter	Type	Description
`$data`	array	Term data (name, slug, term_group)
`$taxonomy`	string	Taxonomy slug
`$args`	array	Arguments passed to wp_insert_term()

Returns: Modified data array.

wp_insert_term_duplicate_term_check

Filters the duplicate term check that takes place during term creation.

apply_filters( 'wp_insert_term_duplicate_term_check', object $duplicate_term, string $term, string $taxonomy, array $args, int $tt_id )

Parameter	Type	Description
`$duplicate_term`	object	Duplicate term row from database
`$term`	string	Term being inserted
`$taxonomy`	string	Taxonomy name
`$args`	array	Insert arguments
`$tt_id`	int	Term taxonomy ID of new term

Returns: Duplicate term object or null to skip check.

create_term

Fires immediately after a new term is created, before the term cache is cleaned.

do_action( 'create_term', int $term_id, int $tt_id, string $taxonomy, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Arguments passed to wp_insert_term()

create_{$taxonomy}

Fires after a new term is created for a specific taxonomy.

do_action( "create_{$taxonomy}", int $term_id, int $tt_id, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$args`	array	Insert arguments

Possible hook names: create_category, create_post_tag

term_id_filter

Filters the term ID after a new term is created.

apply_filters( 'term_id_filter', int $term_id, int $tt_id, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$args`	array	Insert/update arguments

Returns: Modified term ID.

created_term

Fires after a new term is created, and after the term cache has been cleaned.

do_action( 'created_term', int $term_id, int $tt_id, string $taxonomy, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Insert arguments

created_{$taxonomy}

Fires after a new term in a specific taxonomy is created, and after the term cache has been cleaned.

do_action( "created_{$taxonomy}", int $term_id, int $tt_id, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$args`	array	Insert arguments

Possible hook names: created_category, created_post_tag

Term Update

edit_terms

Fires immediately before the given terms are edited.

do_action( 'edit_terms', int $term_id, string $taxonomy, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Arguments passed to wp_update_term()

edited_terms

Fires immediately after a term is updated in the database, but before its term-taxonomy relationship is updated.

do_action( 'edited_terms', int $term_id, string $taxonomy, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Update arguments

wp_update_term_parent

Filters the term parent.

apply_filters( 'wp_update_term_parent', int $parent_term, int $term_id, string $taxonomy, array $parsed_args, array $args )

Parameter	Type	Description
`$parent_term`	int	Parent term ID
`$term_id`	int	Term ID
`$taxonomy`	string	Taxonomy slug
`$parsed_args`	array	Parsed update arguments
`$args`	array	Original arguments

Returns: Modified parent term ID.

wp_update_term_data

Filters term data before it is updated in the database.

apply_filters( 'wp_update_term_data', array $data, int $term_id, string $taxonomy, array $args )

Parameter	Type	Description
`$data`	array	Term data to update
`$term_id`	int	Term ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Update arguments

Returns: Modified data array.

edit_term_taxonomy

Fires immediately before a term-taxonomy relationship is updated.

do_action( 'edit_term_taxonomy', int $tt_id, string $taxonomy, array $args )

Parameter	Type	Description
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Update arguments

edited_term_taxonomy

Fires immediately after a term-taxonomy relationship is updated.

do_action( 'edited_term_taxonomy', int $tt_id, string $taxonomy, array $args )

Parameter	Type	Description
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Update arguments

edit_term

Fires after a term has been updated, but before the term cache has been cleaned.

do_action( 'edit_term', int $term_id, int $tt_id, string $taxonomy, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Update arguments

edit_{$taxonomy}

Fires after a term in a specific taxonomy has been updated, but before the term cache has been cleaned.

do_action( "edit_{$taxonomy}", int $term_id, int $tt_id, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$args`	array	Update arguments

Possible hook names: edit_category, edit_post_tag

edited_term

Fires after a term has been updated, and the term cache has been cleaned.

do_action( 'edited_term', int $term_id, int $tt_id, string $taxonomy, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$args`	array	Update arguments

edited_{$taxonomy}

Fires after a term for a specific taxonomy has been updated, and the term cache has been cleaned.

do_action( "edited_{$taxonomy}", int $term_id, int $tt_id, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$args`	array	Update arguments

Possible hook names: edited_category, edited_post_tag

Saved Term (Both Create and Update)

saved_term

Fires after a term has been saved, and the term cache has been cleared.

do_action( 'saved_term', int $term_id, int $tt_id, string $taxonomy, bool $update, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$update`	bool	Whether this is an update
`$args`	array	Insert/update arguments

saved_{$taxonomy}

Fires after a term in a specific taxonomy has been saved, and the term cache has been cleared.

do_action( "saved_{$taxonomy}", int $term_id, int $tt_id, bool $update, array $args )

Parameter	Type	Description
`$term_id`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$update`	bool	Whether this is an update
`$args`	array	Insert/update arguments

Possible hook names: saved_category, saved_post_tag

Term Deletion

pre_delete_term

Fires when deleting a term, before any modifications are made to posts or terms.

do_action( 'pre_delete_term', int $term, string $taxonomy )

Parameter	Type	Description
`$term`	int	Term ID
`$taxonomy`	string	Taxonomy name

edit_term_taxonomies

Fires immediately before a term to delete’s children are reassigned a parent.

do_action( 'edit_term_taxonomies', array $edit_tt_ids )

Parameter	Type	Description
`$edit_tt_ids`	array	Term taxonomy IDs of children

edited_term_taxonomies

Fires immediately after a term to delete’s children are reassigned a parent.

do_action( 'edited_term_taxonomies', array $edit_tt_ids )

Parameter	Type	Description
`$edit_tt_ids`	array	Term taxonomy IDs of children

delete_term_taxonomy

Fires immediately before a term taxonomy ID is deleted.

do_action( 'delete_term_taxonomy', int $tt_id )

Parameter	Type	Description
`$tt_id`	int	Term taxonomy ID

deleted_term_taxonomy

Fires immediately after a term taxonomy ID is deleted.

do_action( 'deleted_term_taxonomy', int $tt_id )

Parameter	Type	Description
`$tt_id`	int	Term taxonomy ID

delete_term

Fires after a term is deleted from the database and the cache is cleaned.

do_action( 'delete_term', int $term, int $tt_id, string $taxonomy, WP_Term $deleted_term, array $object_ids )

Parameter	Type	Description
`$term`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug
`$deleted_term`	WP_Term	Deleted term object
`$object_ids`	array	Object IDs that were assigned to term

delete_{$taxonomy}

Fires after a term in a specific taxonomy is deleted.

do_action( "delete_{$taxonomy}", int $term, int $tt_id, WP_Term $deleted_term, array $object_ids )

Parameter	Type	Description
`$term`	int	Term ID
`$tt_id`	int	Term taxonomy ID
`$deleted_term`	WP_Term	Deleted term object
`$object_ids`	array	Object IDs that were assigned

Possible hook names: delete_category, delete_post_tag

Object-Term Relationships

add_term_relationship

Fires immediately before an object-term relationship is added.

do_action( 'add_term_relationship', int $object_id, int $tt_id, string $taxonomy )

Parameter	Type	Description
`$object_id`	int	Object ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug

added_term_relationship

Fires immediately after an object-term relationship is added.

do_action( 'added_term_relationship', int $object_id, int $tt_id, string $taxonomy )

Parameter	Type	Description
`$object_id`	int	Object ID
`$tt_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug

delete_term_relationships

Fires immediately before an object-term relationship is deleted.

do_action( 'delete_term_relationships', int $object_id, array $tt_ids, string $taxonomy )

Parameter	Type	Description
`$object_id`	int	Object ID
`$tt_ids`	array	Term taxonomy IDs
`$taxonomy`	string	Taxonomy slug

deleted_term_relationships

Fires immediately after an object-term relationship is deleted.

do_action( 'deleted_term_relationships', int $object_id, array $tt_ids, string $taxonomy )

Parameter	Type	Description
`$object_id`	int	Object ID
`$tt_ids`	array	Term taxonomy IDs
`$taxonomy`	string	Taxonomy slug

set_object_terms

Fires after an object’s terms have been set.

do_action( 'set_object_terms', int $object_id, array $terms, array $tt_ids, string $taxonomy, bool $append, array $old_tt_ids )

Parameter	Type	Description
`$object_id`	int	Object ID
`$terms`	array	Term IDs or slugs
`$tt_ids`	array	Term taxonomy IDs
`$taxonomy`	string	Taxonomy slug
`$append`	bool	Whether appending to old terms
`$old_tt_ids`	array	Previous term taxonomy IDs

wp_get_object_terms_args

Filters arguments for retrieving object terms.

apply_filters( 'wp_get_object_terms_args', array $args, int[] $object_ids, string[] $taxonomies )

Parameter	Type	Description
`$args`	array	Query arguments
`$object_ids`	int[]	Object IDs
`$taxonomies`	string[]	Taxonomy names

Returns: Modified arguments array.

get_object_terms

Filters the terms for a given object or objects.

apply_filters( 'get_object_terms', WP_Term[]|int[]|string[]|string $terms, int[] $object_ids, string[] $taxonomies, array $args )

Parameter	Type	Description
`$terms`	array\|string	Terms or count
`$object_ids`	int[]	Object IDs
`$taxonomies`	string[]	Taxonomy names
`$args`	array	Query arguments

Returns: Modified terms.

wp_get_object_terms

Filters the terms for a given object or objects (legacy format).

apply_filters( 'wp_get_object_terms', WP_Term[]|int[]|string[]|string $terms, string $object_ids, string $taxonomies, array $args )

Parameter	Type	Description
`$terms`	array\|string	Terms or count
`$object_ids`	string	Comma-separated object IDs
`$taxonomies`	string	SQL fragment of taxonomy names
`$args`	array	Query arguments

Returns: Modified terms.

Term Sanitization

edit_term_{$field}

Filters a term field to edit before it is sanitized.

apply_filters( "edit_term_{$field}", mixed $value, int $term_id, string $taxonomy )

Parameter	Type	Description
`$value`	mixed	Field value
`$term_id`	int	Term ID
`$taxonomy`	string	Taxonomy slug

Returns: Modified value.

edit_{$taxonomy}_{$field}

Filters the taxonomy field to edit before it is sanitized.

apply_filters( "edit_{$taxonomy}_{$field}", mixed $value, int $term_id )

Parameter	Type	Description
`$value`	mixed	Field value
`$term_id`	int	Term ID

Returns: Modified value.

pre_term_{$field}

Filters a term field value before it is sanitized for database.

apply_filters( "pre_term_{$field}", mixed $value, string $taxonomy )

Parameter	Type	Description
`$value`	mixed	Field value
`$taxonomy`	string	Taxonomy slug

Returns: Modified value.

pre_{$taxonomy}_{$field}

Filters a taxonomy field before it is sanitized for database.

apply_filters( "pre_{$taxonomy}_{$field}", mixed $value )

Parameter	Type	Description
`$value`	mixed	Field value

Returns: Modified value.

term_{$field}

Filters the term field sanitized for display.

apply_filters( "term_{$field}", mixed $value, int $term_id, string $taxonomy, string $context )

Parameter	Type	Description
`$value`	mixed	Field value
`$term_id`	int	Term ID
`$taxonomy`	string	Taxonomy slug
`$context`	string	Display context

Returns: Modified value.

{$taxonomy}_{$field}

Filters the taxonomy field sanitized for display.

apply_filters( "{$taxonomy}_{$field}", mixed $value, int $term_id, string $context )

Parameter	Type	Description
`$value`	mixed	Field value
`$term_id`	int	Term ID
`$context`	string	Display context

Returns: Modified value.

Term Slugs

wp_unique_term_slug_is_bad_slug

Filters whether the proposed unique term slug is bad.

apply_filters( 'wp_unique_term_slug_is_bad_slug', bool $needs_suffix, string $slug, object $term )

Parameter	Type	Description
`$needs_suffix`	bool	Whether slug needs suffix
`$slug`	string	Proposed slug
`$term`	object	Term object

Returns: Whether to add suffix.

wp_unique_term_slug

Filters the unique term slug.

apply_filters( 'wp_unique_term_slug', string $slug, object $term, string $original_slug )

Parameter	Type	Description
`$slug`	string	Unique slug
`$term`	object	Term object
`$original_slug`	string	Original proposed slug

Returns: Modified slug.

Term Links

pre_term_link

Filters the permalink structure for a term before token replacement occurs.

apply_filters( 'pre_term_link', string $termlink, WP_Term $term )

Parameter	Type	Description
`$termlink`	string	Permalink structure
`$term`	WP_Term	Term object

Returns: Modified permalink structure.

term_link

Filters the term link.

apply_filters( 'term_link', string $termlink, WP_Term $term, string $taxonomy )

Parameter	Type	Description
`$termlink`	string	Term link URL
`$term`	WP_Term	Term object
`$taxonomy`	string	Taxonomy slug

Returns: Modified URL.

tag_link

Filters the tag link (for post_tag taxonomy).

apply_filters( 'tag_link', string $termlink, int $term_id )

Parameter	Type	Description
`$termlink`	string	Tag link URL
`$term_id`	int	Term ID

Returns: Modified URL.

category_link

Filters the category link.

apply_filters( 'category_link', string $termlink, int $term_id )

Parameter	Type	Description
`$termlink`	string	Category link URL
`$term_id`	int	Term ID

Returns: Modified URL.

Term Counting

update_term_count

Fires when a term count is calculated, before it is updated in the database.

do_action( 'update_term_count', int $tt_id, string $taxonomy_name, int $count )

Parameter	Type	Description
`$tt_id`	int	Term taxonomy ID
`$taxonomy_name`	string	Taxonomy slug
`$count`	int	Term count

update_post_term_count_statuses

Filters the post statuses for updating the term count.

apply_filters( 'update_post_term_count_statuses', string[] $post_statuses, WP_Taxonomy $taxonomy )

Parameter	Type	Description
`$post_statuses`	string[]	Post statuses to include
`$taxonomy`	WP_Taxonomy	Taxonomy object

Returns: Modified post statuses array.

Caching

clean_term_cache

Fires once after each taxonomy’s term cache has been cleaned.

do_action( 'clean_term_cache', array $ids, string $taxonomy, bool $clean_taxonomy )

Parameter	Type	Description
`$ids`	array	Term IDs
`$taxonomy`	string	Taxonomy slug
`$clean_taxonomy`	bool	Whether taxonomy-wide caches were cleaned

clean_object_term_cache

Fires after the object term cache has been cleaned.

do_action( 'clean_object_term_cache', array $object_ids, string $object_type )

Parameter	Type	Description
`$object_ids`	array	Object IDs
`$object_type`	string	Object type

clean_taxonomy_cache

Fires after a taxonomy’s caches have been cleaned.

do_action( 'clean_taxonomy_cache', string $taxonomy )

Parameter	Type	Description
`$taxonomy`	string	Taxonomy slug

Hierarchy

get_ancestors

Filters a given object’s ancestors.

apply_filters( 'get_ancestors', int[] $ancestors, int $object_id, string $object_type, string $resource_type )

Parameter	Type	Description
`$ancestors`	int[]	Ancestor IDs
`$object_id`	int	Object ID
`$object_type`	string	Object type
`$resource_type`	string	`'post_type'` or `'taxonomy'`

Returns: Modified ancestors array.

Split Terms

split_shared_term

Fires after a previously shared taxonomy term is split into two separate terms.

do_action( 'split_shared_term', int $term_id, int $new_term_id, int $term_taxonomy_id, string $taxonomy )

Parameter	Type	Description
`$term_id`	int	Formerly shared term ID
`$new_term_id`	int	New term ID
`$term_taxonomy_id`	int	Term taxonomy ID
`$taxonomy`	string	Taxonomy slug

Term Exists

term_exists_default_query_args

Filters default query arguments for checking if a term exists.

apply_filters( 'term_exists_default_query_args', array $defaults, int|string $term, string $taxonomy, int|null $parent_term )

Parameter	Type	Description
`$defaults`	array	Default get_terms() arguments
`$term`	int\|string	Term to check
`$taxonomy`	string	Taxonomy name
`$parent_term`	int\|null	Parent term ID

Returns: Modified defaults array.

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