xyzshop/helper/bonus/util.php

<?php
/**
 * Created by PhpStorm.
 * User: stanley-king
 * Date: 16/4/10
 * Time: 下午11:17
 */

namespace bonus;

function make_sn()
{
    if(isset($_SESSION['member_id']) && !empty((int) $_SESSION['member_id'])) {
        return mt_rand(10,99)
        . sprintf('%010d',time() - 946656000)
        . sprintf('%03d', (float) microtime() * 1000)
        . sprintf('%03d', (int) $_SESSION['member_id'] % 1000);
    } else {
        return mt_rand(10,99)
        . sprintf('%010d',time() - 946656000)
        . sprintf('%03d', (float) microtime() * 1000)
        . sprintf('%03d', mt_rand(100,999));
    }
}