wp_insert_term() WordPress Function
The wp_insert_term() function is used to insert a new term into the database. The function takes two arguments: the term to insert and the taxonomy in which to insert the term. The function returns the ID of the newly inserted term.
wp_insert_term( string $term, string $taxonomy, array|string $args = array() ) #
Adds a new term to the database.
Description
A non-existent term is inserted in the following sequence:
- The term is added to the term table, then related to the taxonomy.
- If everything is correct, several actions are fired.
- The ‘term_id_filter’ is evaluated.
- The term cache is cleaned.
- Several more actions are fired.
- An array is returned containing the
term_id
andterm_taxonomy_id
.
If the ‘slug’ argument is not empty, then it is checked to see if the term is invalid. If it is not a valid, existing term, it is added and the term_id is given.
If the taxonomy is hierarchical, and the ‘parent’ argument is not empty, the term is inserted and the term_id will be given.
Error handling: If $taxonomy
does not exist or $term
is empty, a WP_Error object will be returned.
If the term already exists on the same hierarchical level, or the term slug and name are not unique, a WP_Error object will be returned.
Parameters
- $term
(string)(Required)The term name to add.
- $taxonomy
(string)(Required)The taxonomy to which to add the term.
- $args
(array|string)(Optional)Array or query string of arguments for inserting a term.
- 'alias_of'
(string) Slug of the term to make this term an alias of. Default empty string. Accepts a term slug. - 'description'
(string) The term description. Default empty string. - 'parent'
(int) The id of the parent term. Default 0. - 'slug'
(string) The term slug to use. Default empty string.
Default value: array()
- 'alias_of'
Return
(array|WP_Error) An array of the new term data, WP_Error otherwise.
- 'term_id'
(int) The new term ID. - 'term_taxonomy_id'
(int|string) The new term taxonomy ID. Can be a numeric string.
Source
File: wp-includes/taxonomy.php
function wp_insert_term( $term, $taxonomy, $args = array() ) { global $wpdb; if ( ! taxonomy_exists( $taxonomy ) ) { return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) ); } /** * Filters a term before it is sanitized and inserted into the database. * * @since 3.0.0 * * @param string|WP_Error $term The term name to add, or a WP_Error object if there's an error. * @param string $taxonomy Taxonomy slug. */ $term = apply_filters( 'pre_insert_term', $term, $taxonomy ); if ( is_wp_error( $term ) ) { return $term; } if ( is_int( $term ) && 0 === $term ) { return new WP_Error( 'invalid_term_id', __( 'Invalid term ID.' ) ); } if ( '' === trim( $term ) ) { return new WP_Error( 'empty_term_name', __( 'A name is required for this term.' ) ); } $defaults = array( 'alias_of' => '', 'description' => '', 'parent' => 0, 'slug' => '', ); $args = wp_parse_args( $args, $defaults ); if ( (int) $args['parent'] > 0 && ! term_exists( (int) $args['parent'] ) ) { return new WP_Error( 'missing_parent', __( 'Parent term does not exist.' ) ); } $args['name'] = $term; $args['taxonomy'] = $taxonomy; // Coerce null description to strings, to avoid database errors. $args['description'] = (string) $args['description']; $args = sanitize_term( $args, $taxonomy, 'db' ); // expected_slashed ($name) $name = wp_unslash( $args['name'] ); $description = wp_unslash( $args['description'] ); $parent = (int) $args['parent']; $slug_provided = ! empty( $args['slug'] ); if ( ! $slug_provided ) { $slug = sanitize_title( $name ); } else { $slug = $args['slug']; } $term_group = 0; if ( $args['alias_of'] ) { $alias = get_term_by( 'slug', $args['alias_of'], $taxonomy ); if ( ! empty( $alias->term_group ) ) { // The alias we want is already in a group, so let's use that one. $term_group = $alias->term_group; } elseif ( ! empty( $alias->term_id ) ) { /* * The alias is not in a group, so we create a new one * and add the alias to it. */ $term_group = $wpdb->get_var( "SELECT MAX(term_group) FROM $wpdb->terms" ) + 1; wp_update_term( $alias->term_id, $taxonomy, array( 'term_group' => $term_group, ) ); } } /* * Prevent the creation of terms with duplicate names at the same level of a taxonomy hierarchy, * unless a unique slug has been explicitly provided. */ $name_matches = get_terms( array( 'taxonomy' => $taxonomy, 'name' => $name, 'hide_empty' => false, 'parent' => $args['parent'], 'update_term_meta_cache' => false, ) ); /* * The `name` match in `get_terms()` doesn't differentiate accented characters, * so we do a stricter comparison here. */ $name_match = null; if ( $name_matches ) { foreach ( $name_matches as $_match ) { if ( strtolower( $name ) === strtolower( $_match->name ) ) { $name_match = $_match; break; } } } if ( $name_match ) { $slug_match = get_term_by( 'slug', $slug, $taxonomy ); if ( ! $slug_provided || $name_match->slug === $slug || $slug_match ) { if ( is_taxonomy_hierarchical( $taxonomy ) ) { $siblings = get_terms( array( 'taxonomy' => $taxonomy, 'get' => 'all', 'parent' => $parent, 'update_term_meta_cache' => false, ) ); $existing_term = null; $sibling_names = wp_list_pluck( $siblings, 'name' ); $sibling_slugs = wp_list_pluck( $siblings, 'slug' ); if ( ( ! $slug_provided || $name_match->slug === $slug ) && in_array( $name, $sibling_names, true ) ) { $existing_term = $name_match; } elseif ( $slug_match && in_array( $slug, $sibling_slugs, true ) ) { $existing_term = $slug_match; } if ( $existing_term ) { return new WP_Error( 'term_exists', __( 'A term with the name provided already exists with this parent.' ), $existing_term->term_id ); } } else { return new WP_Error( 'term_exists', __( 'A term with the name provided already exists in this taxonomy.' ), $name_match->term_id ); } } } $slug = wp_unique_term_slug( $slug, (object) $args ); $data = compact( 'name', 'slug', 'term_group' ); /** * Filters term data before it is inserted into the database. * * @since 4.7.0 * * @param array $data Term data to be inserted. * @param string $taxonomy Taxonomy slug. * @param array $args Arguments passed to wp_insert_term(). */ $data = apply_filters( 'wp_insert_term_data', $data, $taxonomy, $args ); if ( false === $wpdb->insert( $wpdb->terms, $data ) ) { return new WP_Error( 'db_insert_error', __( 'Could not insert term into the database.' ), $wpdb->last_error ); } $term_id = (int) $wpdb->insert_id; // Seems unreachable. However, is used in the case that a term name is provided, which sanitizes to an empty string. if ( empty( $slug ) ) { $slug = sanitize_title( $slug, $term_id ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edit_terms', $term_id, $taxonomy ); $wpdb->update( $wpdb->terms, compact( 'slug' ), compact( 'term_id' ) ); /** This action is documented in wp-includes/taxonomy.php */ do_action( 'edited_terms', $term_id, $taxonomy ); } $tt_id = $wpdb->get_var( $wpdb->prepare( "SELECT tt.term_taxonomy_id FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = %s AND t.term_id = %d", $taxonomy, $term_id ) ); if ( ! empty( $tt_id ) ) { return array( 'term_id' => $term_id, 'term_taxonomy_id' => $tt_id, ); } if ( false === $wpdb->insert( $wpdb->term_taxonomy, compact( 'term_id', 'taxonomy', 'description', 'parent' ) + array( 'count' => 0 ) ) ) { return new WP_Error( 'db_insert_error', __( 'Could not insert term taxonomy into the database.' ), $wpdb->last_error ); } $tt_id = (int) $wpdb->insert_id; /* * Sanity check: if we just created a term with the same parent + taxonomy + slug but a higher term_id than * an existing term, then we have unwittingly created a duplicate term. Delete the dupe, and use the term_id * and term_taxonomy_id of the older term instead. Then return out of the function so that the "create" hooks * are not fired. */ $duplicate_term = $wpdb->get_row( $wpdb->prepare( "SELECT t.term_id, t.slug, tt.term_taxonomy_id, tt.taxonomy FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON ( tt.term_id = t.term_id ) WHERE t.slug = %s AND tt.parent = %d AND tt.taxonomy = %s AND t.term_id < %d AND tt.term_taxonomy_id != %d", $slug, $parent, $taxonomy, $term_id, $tt_id ) ); /** * Filters the duplicate term check that takes place during term creation. * * Term parent + taxonomy + slug combinations are meant to be unique, and wp_insert_term() * performs a last-minute confirmation of this uniqueness before allowing a new term * to be created. Plugins with different uniqueness requirements may use this filter * to bypass or modify the duplicate-term check. * * @since 5.1.0 * * @param object $duplicate_term Duplicate term row from terms table, if found. * @param string $term Term being inserted. * @param string $taxonomy Taxonomy name. * @param array $args Term arguments passed to the function. * @param int $tt_id term_taxonomy_id for the newly created term. */ $duplicate_term = apply_filters( 'wp_insert_term_duplicate_term_check', $duplicate_term, $term, $taxonomy, $args, $tt_id ); if ( $duplicate_term ) { $wpdb->delete( $wpdb->terms, array( 'term_id' => $term_id ) ); $wpdb->delete( $wpdb->term_taxonomy, array( 'term_taxonomy_id' => $tt_id ) ); $term_id = (int) $duplicate_term->term_id; $tt_id = (int) $duplicate_term->term_taxonomy_id; clean_term_cache( $term_id, $taxonomy ); return array( 'term_id' => $term_id, 'term_taxonomy_id' => $tt_id, ); } /** * Fires immediately after a new term is created, before the term cache is cleaned. * * The {@see 'create_$taxonomy'} hook is also available for targeting a specific * taxonomy. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. */ do_action( 'create_term', $term_id, $tt_id, $taxonomy ); /** * Fires after a new term is created for a specific taxonomy. * * The dynamic portion of the hook name, `$taxonomy`, refers * to the slug of the taxonomy the term was created for. * * Possible hook names include: * * - `create_category` * - `create_post_tag` * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. */ do_action( "create_{$taxonomy}", $term_id, $tt_id ); /** * Filters the term ID after a new term is created. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. */ $term_id = apply_filters( 'term_id_filter', $term_id, $tt_id ); clean_term_cache( $term_id, $taxonomy ); /** * Fires after a new term is created, and after the term cache has been cleaned. * * The {@see 'created_$taxonomy'} hook is also available for targeting a specific * taxonomy. * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. */ do_action( 'created_term', $term_id, $tt_id, $taxonomy ); /** * Fires after a new term in a specific taxonomy is created, and after the term * cache has been cleaned. * * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. * * Possible hook names include: * * - `created_category` * - `created_post_tag` * * @since 2.3.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. */ do_action( "created_{$taxonomy}", $term_id, $tt_id ); /** * Fires after a term has been saved, and the term cache has been cleared. * * The {@see 'saved_$taxonomy'} hook is also available for targeting a specific * taxonomy. * * @since 5.5.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. * @param bool $update Whether this is an existing term being updated. */ do_action( 'saved_term', $term_id, $tt_id, $taxonomy, false ); /** * Fires after a term in a specific taxonomy has been saved, and the term * cache has been cleared. * * The dynamic portion of the hook name, `$taxonomy`, refers to the taxonomy slug. * * Possible hook names include: * * - `saved_category` * - `saved_post_tag` * * @since 5.5.0 * * @param int $term_id Term ID. * @param int $tt_id Term taxonomy ID. * @param bool $update Whether this is an existing term being updated. */ do_action( "saved_{$taxonomy}", $term_id, $tt_id, false ); return array( 'term_id' => $term_id, 'term_taxonomy_id' => $tt_id, ); }
Expand full source codeCollapse full source codeView on TracView on GitHub
Changelog
Version | Description |
---|---|
2.3.0 | Introduced. |