admin_consumer/app/Tools/PublicData.php

<?php
namespace App\Tools;
use App\Constants\ErrorCode;
class PublicData
{
    public static  function buildMenuTree($menuItems, $parentId = 0) {
        $tree = [];
        foreach ($menuItems as $item) {
            if ($item['pid'] == $parentId) {
                // 找到子菜单
                $children = self::buildMenuTree($menuItems, $item['id']);
                // 如果子菜单存在，则添加到当前菜单的children中
                if ($children) {
                    $item['children'] = $children;
                }
                // 将当前菜单添加到树中
                $tree[] = $item;
            }
        }
        return $tree;
    }





}