public function get_posts_list($post_type, $page = 1, $per_page = 10, $sort = null, $topic_ids = null, $category_id = null, $answer_count = null, $day = 30, $is_recommend = false)
	{
		$order_key = 'add_time DESC';

		switch ($sort)
		{
			case 'responsed':
				$answer_count = 1;

				break;

			case 'unresponsive':
				$answer_count = 0;

				break;

			case 'new' :
				$order_key = 'update_time DESC';

				break;
		}

		if (is_array($topic_ids))
		{
			foreach ($topic_ids AS $key => $val)
			{
				if (!$val)
				{
					unset($topic_ids[$key]);
				}
			}
		}

		if ($topic_ids)
		{
			$posts_index = $this->get_posts_list_by_topic_ids($post_type, $post_type, $topic_ids, $category_id, $answer_count, $order_key, $is_recommend, $page, $per_page);
		}
		else
		{
			$where = array();

			if (isset($answer_count))
			{
				$answer_count = intval($answer_count);

				if ($answer_count == 0)
				{
					$where[] = "answer_count = " . $answer_count;
				}
				else if ($answer_count > 0)
				{
					$where[] = "answer_count >= " . $answer_count;
				}
			}

			if ($is_recommend)
			{
				$where[] = 'is_recommend = 1';
			}

			if ($category_id)
			{
				$where[] = 'category_id IN(' . implode(',', $this->model('system')->get_category_with_child_ids('question', $category_id)) . ')';
			}

			if ($post_type)
			{
				$where[] = "post_type = '" . $this->quote($post_type) . "'";
			}

			$posts_index = $this->fetch_page('posts_index', implode(' AND ', $where), $order_key, $page, $per_page);

			$this->posts_list_total = $this->found_rows();
		}

		return $this->process_explore_list_data($posts_index);
	}