payment/app/Helper/Baofu/Tool.php

<?php

namespace App\Helper\Baofu;

use Exception;

class Tool
{
    
    /**
     * 生成时间戳
     * @return int|false
     */
    public static function getTransid()
    {
        return strtotime(date('Y-m-d H:i:s', time()));
    }

    /**
     * 生成四位随机数
     * @return int
     */
    public static function getRand4()
    {
        return rand(1000, 9999);
    }

    /**
     * 生成四位随机数
     * @return string
     */
    public static function getTime()
    {
        return date('YmdHis', time());
    }

    /**
     * 明文请求参数
     * @return type
     */
    public static function getPostParm($txnSubType, $encrypted)
    {
        if($txnSubType == null || $txnSubType == ''){
            throw  new Exception('方法：getPostParm，参数：txn_sub_type  异常为空！');
        }
        if($encrypted == null || $encrypted == ''){
            throw  new Exception('方法：getPostParm，参数：encrypted  异常为空！');
        }
        
        $data = [];
        $data['version'] = $GLOBALS['version'];
        $data['member_id'] = $GLOBALS['member_id'];
        $data['terminal_id'] = $GLOBALS['terminal_id'];
        $data['txn_type'] = $GLOBALS['txn_type'];
        $data['txn_sub_type'] = $txnSubType;
        $data['data_type'] = $GLOBALS['data_type'];
        $data['data_content'] = $encrypted;        
        return $data;
    }
    
    /**
     * 获取待加密串
     * @param string $paramStr
     * @param array $paramList
     * @param array $signData
     * @throws Exception
     */
    public static function getSignStr($paramStr, $paramList, $signData, $action = 'request')
    {        
        foreach($paramList as $value) {            
            if (empty($signData[$value]) || $signData[$value] == 'null') {
                if($action == 'request'){ // 请求
                    $paramStr = str_replace($value, '', $paramStr);
                } else { // 响应
                    $paramStr = str_replace($value . '|', '', $paramStr);
                    $paramStr = str_replace('|' .$value, '', $paramStr);
                }
                continue;
            }elseif (!array_key_exists($value, $signData)){
                throw new Exception('缺少['.$value.']参数！');
            }

            if (is_array($signData[$value])){
                $signData[$value] = json_encode($signData[$value]);
            }

            $paramStr = str_replace($value, $signData[$value], $paramStr);
        }
        return $paramStr;
    }
}