PHP实例：dedecms集成财付通支付接口

<?php
if(!defined('DEDEINC')) exit('Request Error!');
/**
 *财付通接口类
 */
class tenpay
{
    var $dsql;
    var $mid;
    var $reqURL_onLine = "http://www.tenpay.com";
    var $return_url='/plus/carbuyaction.php?dopost=return'; //返回处理地址
    /**
    * 构造函数
    *
    * @access  public
    * @param
    *
    * @return void
    */
    function tenpay()
    {
        global $dsql;
        $this->dsql = $dsql;
    }
    function __construct()
    {
        $this->tenpay();
    }
    /**
     *  设定接口会送地址
     *
     *  例如: $this->SetReturnUrl($cfg_basehost."/tuangou/control/index.php?ac=pay&orderid=".$p2_Order)
     *
     * @param     string  $returnurl  会送地址
     * @return    void
     */
    function SetReturnUrl($returnurl='')
    {
        if (!empty($returnurl))
        {
            $this->return_url = $returnurl;
        }
    }
    /**
    * 生成支付代码
    * @param   array   $order      订单信息
    * @param   array   $payment    支付方式信息
    */
    function GetCode($order, $payment)
    {
        global $cfg_basehost,$cfg_cmspath;
        //对于二级目录的处理
        if(!empty($cfg_cmspath)) $cfg_basehost = $cfg_basehost.'/'.$cfg_cmspath;
          $partner      =  $payment['tenpay_account'];
          $out_trade_no = $order['out_trade_no'];
          $total_fee = floatval($order['price']) * 100;
           $body = $order['out_trade_no'];
           $attach = '';
           $bank_type = 'DEFAULT';
            /* 交易类型：2、虚拟交易,1、实物交易 */
         $trans_type = 1;
         $trade_mode=empty($payment['tenpay_pay_method']) ? '1' : $payment['tenpay_pay_method'];
       $parameter = array(
            'partner'              => $partner,
            'out_trade_no'         => $out_trade_no,                           //订单号
            'total_fee'            => $total_fee,                              //总金额
            'notify_url'           => $cfg_basehost.$this->return_url."&code=".$payment['code'],  //返回地址
            'return_url'           => $cfg_basehost.$this->return_url."&code=".$payment['code'], //提醒地址
            'body'                 => $body,                            //交易描述
            'bank_type'            => $bank_type,                       //交易类型  默认财付通
            //用户ip
            'spbill_create_ip'     => $_SERVER['REMOTE_ADDR'],          //交易ip
            'fee_type'             => '1',                        //币种  1 人民币
            'subject'              => $body,                            //商品名称
            //系统可选参数
            'sign_type'            => 'MD5',                            //加密方式
            'service_version'      => '1.0',                            //接口版本号 默认1.0
            'input_charset'        => 'UTF-8',                         //系统编码  'GBK'
            'sign_key_index'       => '1',                              //密钥序号
            //业务可选参数
            'attach'               => $attach,            //附加数据 原样返回  默认为空
            'product_fee'          => '',                 //商品费用
            'transport_fee'        => '0',                //物流费用
            'time_start'           => date("YmdHis"),     //订单生成时间   date("YmdHis")
            'time_expire'          => '',                 //订单失效时间
            'buyer_id'             => '',                 //买方财付通帐号
            'goods_tag'            => '',                 //商品标记
            'trade_mode'           => $trade_mode,        //交易模式(1.即时到帐模式,2.中介包管模式,3.后台选择(卖家进入支付中心列表选择))
            'transport_desc'       => '',                 //物流说明
            'trans_type'           => $trans_type,        //交易类型
            'agentid'              => '',                 //平台ID
            'agent_type'           => '',                 //代理模式(0.无代理,1.表示卡易售模式,2.表示网店模式)
            'seller_id'            => ''                  //卖家商户号
        );
        ksort($parameter);
        reset($parameter);
        $param = '';
        $sign  = '';
        foreach ($parameter AS $key => $val)
        {
            $param .= "$key=" .urlencode($val). "&";
            if("" != $val && "sign" != $key) {
                $sign  .= "$key=$val&";
            }
        }
        $param = substr($param, 0, -1);
        $sign .= "key=".$payment['tenpay_key'];
        $sign = strtolower(md5($sign)); 
        $button = '<div style="text-align:center"><a href="https://gw.tenpay.com/gateway/pay.htm?'.$param. '&sign='.$sign.'"><button>立即使用财付通支付</button></a></div>';
        return $button;
    /* 清空购物车 */
        require_once DEDEINC.'/shopcar.class.php';
        $cart     = new MemberShops();
        $cart->clearItem();
        $cart->MakeOrders();
        return $button;
    }
    /**
    * 响应操作
    */
    function respond()
    {
        /* 引入配置文件 */
        $code = preg_replace( "#[^0-9a-z-]#i", "", $_GET['code'] );
        require_once DEDEDATA.'/payment/'.$code.'.php';
        $attach         = $_GET['attach'];
        $trade_state    = $_GET['trade_state'];
        $total_fee      = $_GET['total_fee'];
        $out_trade_no = trim($_GET['out_trade_no']);
 if(preg_match ("/S-P[0-9]+RN[0-9]/",$order_sn)) {
            //检查支付金额是否相符
            $row = $this->dsql->GetOne("SELECT * FROM #@__shops_orders WHERE oid = '{$order_sn}'");
            if ($row['priceCount'] != $_GET['total_fee'])
            {
                return $msg = "支付失败,支付金额与商品总价不相符!";
            }
            $this->mid = $row['userid'];
          /* 检查数字签名是否正确 */
        ksort($_GET);
        reset($_GET);
       $sign = '';
        foreach ($_GET AS $key => $val)
        {
            if("" != $val && "sign" != $key && $key != 'code') {
                $sign  .= "$key=$val&";
            }
        }
           $sign .= "key=".$payment['tenpay_key'];
  if(strtolower(md5($sign))==strtolower($_GET['sign']))
{
            if($trade_state==0)
            {     
                     /* 改变订单状态 */
               if($this->success_db($out_trade_no)) 
               return $msg = "支付成功!<br> <a href='/'>返回主页</a> <a href='/member'>会员中心</a>";
               else  return $msg = "支付失败!<br> <a href='/'>返回主页</a> <a href='/member'>会员中心</a>";
            }  
}
else{
   //return $msg = "支付失败!<br> <a href='/'>返回主页</a> <a href='/member'>会员中心</a>";
  }
   }
    /*处理物品交易*/
    function success_db($order_sn)
    {
        $time=time();
        $mid=$this->mid;
        //获取订单信息,检查订单的有效性
        $row = $this->dsql->GetOne("SELECT state,priceCount FROM #@__shops_orders WHERE oid='$order_sn' ");
        if($row['state'] > 0)
        {
            return TRUE;
        } 
        /* 改变订单状态_支付成功 */
        $sql = "UPDATE `#@__shops_orders` SET `state`='1' WHERE `oid`='$order_sn' AND `userid`='".$this->mid."'";
        if($this->dsql->ExecuteNoneQuery($sql))
        {
            $this->log_result("verify_success,订单号:".$order_sn); //将验证结果存入文件
            return TRUE;
        } else {
            $this->log_result ("verify_failed,订单号:".$order_sn);//将验证结果存入文件
            return FALSE;
        }
    }
    function  log_result($word) {
        global $cfg_cmspath;
        $fp = fopen(dirname(__FILE__)."/../../data/payment/log.txt","a");
        flock($fp, LOCK_EX) ;
        fwrite($fp,$word.",执行日期:".strftime("%Y-%m-%d %H:%I:%S",time())."\r\n");
        flock($fp, LOCK_UN);
        fclose($fp);
    }
}