要获取与产品类别相关的产品属性分类/术语名称数组，请尝试以下操作：

// Here define the product category SLUG
$category_slug = 'posters';

$query_args = array(
    'status'    => 'publish',
    'limit'     => -1,
    'category'  => array( $category_slug ),
);

$data = array();
foreach( wc_get_products($query_args) as $product ){
    foreach( $product->get_attributes() as $taxonomy => $attribute ){
        $attribute_name = wc_attribute_label( $taxonomy ); // Attribute name
        // Or: $attribute_name = get_taxonomy( $taxonomy )->labels->singular_name;
        foreach ( $attribute->get_terms() as $term ){
            $data[$taxonomy][$term->term_id] = $term->name;
            // Or with the product attribute label name instead:
            // $data[$attribute_name][$term->term_id] = $term->name;
        }
    }
}

// Raw output (testing)
echo '<pre>'; print_r($data); echo '</pre>';

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你会得到类似的东西（一个示例摘录）：

Array
(
    [pa_color] => Array
        (
            [9]  => Blue
            [10] => Green
        )
    [pa_size] => Array
        (
            [15] => Small
            [16] => Medium
            [18] => Large
        )
)

型

我们首先使用了公认的方法，但在产品类别有数百个产品的情况下，它达到了内存限制。为了优化它，我们将其转换为原始查询。
希望这能派上用场：）

global $wpdb;

$attributes_query = $wpdb->prepare(
    "SELECT tr.object_id, tt.taxonomy, tt.term_id, t.name
    FROM {$wpdb->prefix}term_relationships AS tr
    JOIN {$wpdb->prefix}term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id
    JOIN {$wpdb->prefix}terms AS t ON tt.term_id = t.term_id
    WHERE tr.object_id IN (
        SELECT p.ID
        FROM {$wpdb->prefix}posts AS p
        JOIN {$wpdb->prefix}term_relationships AS tr ON p.ID = tr.object_id
        JOIN {$wpdb->prefix}term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id
        JOIN {$wpdb->prefix}terms AS t ON tt.term_id = t.term_id
        WHERE p.post_type = 'product'
        AND p.post_status = 'publish'
        AND tt.taxonomy = 'product_cat'
        AND t.slug = '{$args['category']}'
    )
    AND tt.taxonomy LIKE %s",
    'pa_%'
);

$results = $wpdb->get_results($attributes_query);

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