计算wordpress中子类别的数量

Question

我需要计算Wordpress中的子类别数，但我无法处理它。有人知道怎么做吗？

Answer 1

您可以计算所有类别并从中减去父类别以获取子类别。

$total_categories_count  = wp_count_terms('category');
$parent_categories_count = count(get_categories('parent=0&hide_empty=0'));
$child_categories_count  = $total_categories_count - $parent_categories_count;

希望这有帮助。

Answer 2

mysql直接：

你应该尝试类似的东西：

SELECT categoria.id AS id_categoria, categoria.nome AS nome_categoria,
        subcategoria.id AS id_subcategoria, subcategoria.nome AS nome_subcategoria
            FROM categoria
            INNER JOIN subcategoria
            ON categoria.id = subcategoria.id_categoria
            ORDER BY nome_categoria, nome_subcategoria

Answer 3

$args = array('parent' => YOUR_PARENT_CATEGORY_ID_NUMBER);
$categories_cnt = count(get_categories( $args ));

echo 'There are '. $categories_cnt .' subcategories in this category';

那是你在找什么？