Question

wp_remove_object_terms( int $object_id,  string|int|array $terms,  array|string $taxonomy )

Remove term(s) associated with a given object.

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description

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参数

$object_id

(int) (Required) The ID of the object from which the terms will be removed.

$terms

(string|int|array) (Required) The slug(s) or ID(s) of the term(s) to remove.

$taxonomy

(array|string) (Required) Taxonomy name.

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返回值

(bool|WP_Error) True on success, false or WP_Error on failure.

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源代码

File: wp-includes/taxonomy.php

function wp_remove_object_terms( $object_id, $terms, $taxonomy ) {
	global $wpdb;

	$object_id = (int) $object_id;

	if ( ! taxonomy_exists( $taxonomy ) ) {
		return new WP_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) );
	}

	if ( ! is_array( $terms ) ) {
		$terms = array( $terms );
	}

	$tt_ids = array();

	foreach ( (array) $terms as $term ) {
		if ( ! strlen( trim( $term ) ) ) {
			continue;
		}

		if ( ! $term_info = term_exists( $term, $taxonomy ) ) {
			// Skip if a non-existent term ID is passed.
			if ( is_int( $term ) ) {
				continue;
			}
		}

		if ( is_wp_error( $term_info ) ) {
			return $term_info;
		}

		$tt_ids[] = $term_info['term_taxonomy_id'];
	}

	if ( $tt_ids ) {
		$in_tt_ids = "'" . implode( "', '", $tt_ids ) . "'";

		/**
		 * Fires immediately before an object-term relationship is deleted.
		 *
		 * @since 2.9.0
		 * @since 4.7.0 Added the `$taxonomy` parameter.
		 *
		 * @param int   $object_id Object ID.
		 * @param array $tt_ids    An array of term taxonomy IDs.
		 * @param string $taxonomy  Taxonomy slug.
		 */
		do_action( 'delete_term_relationships', $object_id, $tt_ids, $taxonomy );
		$deleted = $wpdb->query( $wpdb->prepare( "DELETE FROM $wpdb->term_relationships WHERE object_id = %d AND term_taxonomy_id IN ($in_tt_ids)", $object_id ) );

		wp_cache_delete( $object_id, $taxonomy . '_relationships' );
		wp_cache_delete( 'last_changed', 'terms' );

		/**
		 * Fires immediately after an object-term relationship is deleted.
		 *
		 * @since 2.9.0
		 * @since 4.7.0 Added the `$taxonomy` parameter.
		 *
		 * @param int    $object_id Object ID.
		 * @param array  $tt_ids    An array of term taxonomy IDs.
		 * @param string $taxonomy  Taxonomy slug.
		 */
		do_action( 'deleted_term_relationships', $object_id, $tt_ids, $taxonomy );

		wp_update_term_count( $tt_ids, $taxonomy );

		return (bool) $deleted;
	}

	return false;
}

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更新日志

Version	description
3.6.0	Introduced.

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相关函数

Uses

• wp-includes/cache.php: wp_cache_delete()
• wp-includes/l10n.php: __()
• wp-includes/taxonomy.php: wp_update_term_count()
• wp-includes/taxonomy.php: delete_term_relationships
• wp-includes/taxonomy.php: deleted_term_relationships
• wp-includes/taxonomy.php: term_exists()
• wp-includes/taxonomy.php: taxonomy_exists()
• wp-includes/plugin.php: do_action()
• wp-includes/wp-db.php: wpdb::query()
• wp-includes/wp-db.php: wpdb::prepare()
• wp-includes/load.php: is_wp_error()
• wp-includes/class-wp-error.php: WP_Error::__construct()
Show 7 more uses Hide more uses

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Used By

• wp-includes/taxonomy.php: wp_set_object_terms()
• wp-includes/taxonomy.php: wp_delete_object_term_relationships()

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User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 0You must log in to vote on the helpfulness of this note Contributed by Codex

   Example

   Remove tag from post.

   
   wp_remove_object_terms( $post_id, 'sweet', 'post_tag' );