ufutx.love.util/app/Services/UtilService.php

<?php

namespace App\Services;

class UtilService
{
    /**
     * 随机生成16位数，作为本地服务器的支付订单ID
     * @return string
     */
    public function getTradeNO()
    {
        $dateline = time();
        $mix_1 = rand(100, 999);
        $mix_2 = rand(100, 999);
        return $dateline . $mix_1 . $mix_2;
    }


}