jiqu-library-server/app/Helpers/Order.php

<?php

namespace App\Helpers;

use Illuminate\Support\Str;

class Order
{
    /**
     * 生成订单流水号
     *
     * @return string
     */
    public static function serialNumber(): string
    {
        $rand = strtoupper(Str::random(6));

        return date('YmdHis').$rand;
    }
}