提取与WooCommerce中的类别关联的品牌列表

function get_brand_list_by_category($category_slug) {
    $brands = array();
    
    $args = array(
        'post_type'      => 'product',
        'posts_per_page' => -1,
        'tax_query'      => array(
            array(
                'taxonomy' => 'product_cat',
                'field'    => 'slug',
                'terms'    => $category_slug,
            ),
        ),
    );
    
    $products = new WP_Query($args);
    
    if ($products->have_posts()) {
        while ($products->have_posts()) {
            $products->the_post();
            
            $product_brands = wp_get_post_terms(get_the_ID(), 'product_brand');
            
            foreach ($product_brands as $product_brand) {
                $brands[$product_brand->name] = get_term_link($product_brand);
            }
        }
    }
    
    wp_reset_postdata();
    
    return $brands;
}

$category_slug = wp_get_post_terms(get_the_ID(), 'product_cat', array('fields' => 'slugs'));
$brand_list = get_brand_list_by_category($category_slug[0]);

if (!empty($brand_list)) {
    echo '<h3>相关品牌</h3>';
    echo '<ul>';

    foreach ($brand_list as $brand_name => $brand_link) {
        echo '<li><a href="' . $brand_link . '">' . $brand_name . '</a></li>';
    }

    echo '</ul>';
}