获取子类别以及子类别组名称

Question

表：类别

表：category_child_title

表：category_child

预期产出就像这样

我试过了sofar

    $sql = "SELECT * FROM category WHERE is_deleted = 0";
        $query = $this->db->query($sql);
        $categories = $query->result_array();

        foreach($categories as $key => $category)
        {
            $cat_id = $category['id'];

//          $sql = "SELECT child.name as childName, group_concat(title.name)  as titleName
//                  FROM category_child AS child
//                  LEFT JOIN category_child_title AS title on child.fk_category_child_title = title.id
//                  WHERE child.fk_category = $cat_id  AND  child.is_deleted = 0
//              ";
//
            $sql = "SELECT name, fk_category_child_title FROM category_child WHERE fk_category = $cat_id  AND  is_deleted = 0";
            $query = $this->db->query($sql);
            $categoryChild = $query->result_array();

            $categories[$key][] = array( 'childs' => $categoryChild);
        }

输出

任何帮助请