Synchronize terms between the two taxonomies #taxonomy #wp

tax_sync.php

<?php
// Synchronize terms between the two taxonomies
function synchronize_taxonomies( $term_id, $tt_id, $taxonomy ) {
    if (in_array($taxonomy, array('first_taxonomy', 'second_taxonomy'))) {
        $term = get_term($term_id, $taxonomy);
        $other_taxonomy = ($taxonomy === 'first_taxonomy') ? 'second_taxonomy' : 'first_taxonomy';

        // Check if the term exists in the other taxonomy
        $term_exists = term_exists($term->name, $other_taxonomy);

        // If the term doesn't exist in the other taxonomy, create it
        if (!$term_exists) {
            wp_insert_term($term->name, $other_taxonomy, array(
                'description' => $term->description,
                'slug' => $term->slug,
            ));
        }
    }
}

add_action('create_term', 'synchronize_taxonomies', 10, 3);
add_action('edit_term', 'synchronize_taxonomies', 10, 3);