mirror of
https://gitee.com/ShopeX/OMS
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85 lines
2.0 KiB
PHP
85 lines
2.0 KiB
PHP
<?php
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/**
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* Copyright © ShopeX （http://www.shopex.cn）. All rights reserved.
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* See LICENSE file for license details.
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*/
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/**
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* 公共抽象类
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*
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* @author wangbiao@shopex.cn
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* @version 2022.07.25
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*/
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abstract class material_abstract
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{
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/**
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* 成功输出
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*
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* @param string $msg
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* @param string $data
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* @return array
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*/
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final public function succ($msg='', $data=null)
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{
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return array('rsp'=>'succ', 'msg'=>$msg, 'data'=>$data);
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}
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/**
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* 失败输出
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*
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* @param string $msg
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* @param string $data
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* @return array
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*/
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final public function error($error_msg, $data=null)
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{
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return array('rsp'=>'fail', 'msg'=>$error_msg, 'error_msg'=>$error_msg, 'data'=>$data);
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}
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/**
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* 根据比例随机获取数组中的数据
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*
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* @param $items 列表数据
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* @return mixed
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*/
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protected function ratioRandom($items)
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{
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//获取比例列表值
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$ratioList = array_column($items, 'real_ratio');
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//计算总权重
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$totalRatio = array_sum($ratioList);
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//生成一个介于0和总权重之间的随机数
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//@todo：放大1000倍,更能体现随机精细度
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$rand = mt_rand(0, $totalRatio * 1000) / 1000;
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//遍历数组，直到随机数小于等于当前累积的权重
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foreach ($items as $item)
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{
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//返回随机的结果
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if ($rand <= $item['real_ratio']) {
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return $item;
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}
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$rand -= $item['real_ratio'];
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}
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//[递归执行]如果没有找到(理论上不应该发生)
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//return $this->ratioRandom($items);
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return $item;
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}
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/**
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* 按贡献占比降序排序
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*
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* @param $a
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* @param $b
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* @return int
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*/
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protected function compare_by_name($a, $b)
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{
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return strcmp($b['rate'], $a['rate']);
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}
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}
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