phpstock/app/youzan/logic/Cat.php

<?php

namespace app\youzan\logic;

use app\youzan\model\YzCat;
use think\facade\Cache;
use think\facade\Db;


//分类处理层
class Cat
{

    private static $cache_key = 'yz_cat_list_pid_';

    //获取分类列表
    public static function getYzCatList(int $parent_cid = 0)
    {

        $key = self::$cache_key . (string)$parent_cid;

        $rs = Cache::get($key);

        if (empty($rs)) {

            $rs = YzCat::field('id,yz_cat_id,yz_cat_name,parent_cid')
                ->where('status', YzCat::$status_normal)
                ->where('parent_cid', $parent_cid)
                ->order('id')
                ->select()
                ->toArray();

            Cache::set($key, $rs, 3600);
        }


        return $rs;
    }
}