在single.php（單篇文章中）加入以下程式碼：
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$cats = array(); foreach (get_the_category($post_id) as $c) { $cat = get_category($c); array_push($cats, $cat->slug); } if (sizeOf($cats) > 0) { $post_categories = implode(',', $cats); } else { $post_categories = 'Not Assigned'; |
參考文章：https://developer.wordpress.org/reference/functions/get_the_category/
