WordPress at Your Fingertips
filter is not described

wp_insert_term_duplicate_term_check filter-hook . WP 5.1.0

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.


add_filter( 'wp_insert_term_duplicate_term_check', 'filter_function_name_1606', 10, 5 );
function filter_function_name_1606( $duplicate_term, $term, $taxonomy, $args, $tt_id ){
	// filter...

	return $duplicate_term;
Duplicate term row from terms table, if found.
Term being inserted.
Taxonomy name.
Term arguments passed to the function.
term_taxonomy_id for the newly created term.


Since 5.1.0 Introduced.

Where the hook is called

wp-includes/taxonomy.php 2492
$duplicate_term = apply_filters( 'wp_insert_term_duplicate_term_check', $duplicate_term, $term, $taxonomy, $args, $tt_id );

Where in WP core the hook is used WordPress

Usage not found.