最近，一个项目要求做交通银行在线支付，ecshop本身没有这方面的接口，于是通过一些时间的专研，做了一个插件出来。有好的东西，当然要分享，在此特地分享出来，希望能够帮助到跟我一样有需要的人，为大家减轻一下开发的负担，也多请大家指出一些好的方法和建议，相互的学习、进步！


在使用插件之前，请配置好交通银行在线支付的环境（具体安装方法，交行提供的demo会有，也不是很难，注意好细节就行）。安装好之后，请将把下面的插件源码和语言包源码按路径保存到相应文件，最后进入后台的支付模块安装即可。

插件源码（includes/modules/payment/bankcomm.php）:
复制代码 代码如下:
<?php

/**
 * 交通银行在线支付插件 For Ecshop
 * Author: Reson
 * Date: 2014/03/31
 */

if (!defined('IN_ECS'))
{
 die('Hacking attempt');
}

$payment_lang = ROOT_PATH . 'languages/' .$GLOBALS['_CFG']['lang']. '/payment/bankcomm.php';

if (file_exists($payment_lang))
{
 global $_LANG;
 include_once($payment_lang);
}

/* 模块的基本信息 */
if (isset($set_modules) && $set_modules == TRUE)
{
 $i = isset($modules) ? count($modules) : 0;

 /* 代码 */
 $modules[$i]['code']    = basename(__FILE__, '.php');

 /* 描述对应的语言项 */
 $modules[$i]['desc']    = 'bankcomm_desc';

 /* 是否支持货到付款 */
 $modules[$i]['is_cod']  = '0';

 /* 是否支持在线支付 */
 $modules[$i]['is_online']  = '1';

 /* 支付费用，由配送决定 */
 $modules[$i]['pay_fee'] = '0';

 /* 作者 */
 $modules[$i]['author']  = 'Reson';

 /* 网址 */
 $modules[$i]['website'] = 'https://www.jb51.net';

 /* 版本号 */
 $modules[$i]['version'] = '1.0.0.0';

 /* 配置信息 */
 $modules[$i]['config']  = array();

 return;
}

/**
 * 类
 */
class bankcomm
{
 /**
  * 构造函数
  *
  * @return void
  */
 function bankcomm()
 {
 }

 function __construct()
 {
  $this->bankcomm();
 }

 /**
  * 提交函数
  */
 function get_code($order)
 {
  //获得表单传过来的数据
  $param['interfaceVersion'] = '1.0.0.0'; //消息版本号*
  $param['merID'] = '301310063009501'; //商户号 (测试号,后期可自行更改)
  $param['orderid'] = $order['orderid']; //订单号*
  $param['orderDate'] = local_date("Ymd",gmtime()); //商户订单日期* yyyyMMdd
  $param['orderTime'] = local_date("His",gmtime()); //商户订单时间* HHmmss
  $param['tranType'] = 0; //交易类别* 0:B2C
  $param['amount'] = $order['amount']; //订单金额*
  $param['curType'] = 'CNY'; //交易币种* 默认CNY
  $param['orderContent'] = '';
  $param['orderMono'] = $order['orderMono']; //商家备注
  $param['phdFlag'] = ''; //物流配送标志
  $param['notifyType'] = 1; //通知方式* 1 通知
  $param['merURL'] = ''; 
  $param['goodsURL'] = $order['goodsURL']; //取货URL
  $param['jumpSeconds'] = '';
  $param['payBatchNo'] = '';
  $param['proxyMerName'] = '';
  $param['proxyMerType'] = '';
  $param['proxyMerCredentials'] = '';
  $param['netType'] = 0; //渠道编号* 0:html渠道
  $param['issBankNo'] = '';

  $tranCode = "cb2200_sign";

  htmlentities($param['orderMono'],"ENT_QUOTES","utf-8");
  //连接字符串
  $source = '';
  foreach($param as $key=>$val){
   if($key != 'issBankNo')
   $source .= $val.'|';
  }
  $source = substr($source,0,strlen($source)-1);

  //连接地址
  $socketUrl = "tcp://127.0.0.1:8080"; //这里的端口根据自己配置的情况
  $fp = stream_socket_client($socketUrl, $errno, $errstr, 30);
  $retMsg="";
  //
  if (!$fp) {
   echo "$errstr ($errno)<br />\n";
  } else
  {
   $in  = "<?xml version='1.0' encoding='UTF-8'?>";
   $in .= "<Message>";
   $in .= "<TranCode>".$tranCode."</TranCode>";
   $in .= "<MsgContent>".$source."</MsgContent>";
   $in .= "</Message>";
   fwrite($fp, $in);
   while (!feof($fp)) {
    $retMsg =$retMsg.fgets($fp, 1024); 
   }
   fclose($fp);
  } 
  //解析返回xml
  $dom = new DOMDocument;
  $dom->loadXML($retMsg);

  $retCode = $dom->getElementsByTagName('retCode');
  $retCode_value = $retCode->item(0)->nodeValue;

  $errMsg = $dom->getElementsByTagName('errMsg');
  $errMsg_value = $errMsg->item(0)->nodeValue;

  $signMsg = $dom->getElementsByTagName('signMsg');
  $signMsg_value = $signMsg->item(0)->nodeValue;

  $orderUrl = $dom->getElementsByTagName('orderUrl');
  $orderUrl_value = $orderUrl->item(0)->nodeValue;

  $MerchID = $dom->getElementsByTagName('MerchID');
  $merID = $MerchID->item(0)->nodeValue;
  //echo "retMsg=".$retMsg;
  //echo $retCode_value." ".$errMsg_value." ".$signMsg_value." ".$orderUrl_value;
  if($retCode_value != "0"){
   //echo "交易返回码：".$retCode_value."<br>";
   //echo "交易错误信息：" .$errMsg_value."<br>";
   return "交易错误信息：" .$errMsg_value."<br>";
  }else{
   $param['signMsg_value'] = $signMsg_value;
   $param['orderUrl_value'] = $orderUrl_value;
   $form_code = $this->create_html($param); //创建提交表单
   return $form_code;
  }

 }

 /**
  * 创建提交表单
  */
 function create_html($param){
  $pay_html ='<form name = "form1" method = "post" action = "'.$param['orderUrl_value'].'">
  <input type = "hidden" name = "interfaceVersion" value = "'.$param['interfaceVersion'].'">
  <input type = "hidden" name = "merID" value = "'.$param['merID'].'">
  <input type = "hidden" name = "orderid" value = "'.$param['orderid'].'">
  <input type = "hidden" name = "orderDate" value = "'.$param['orderDate'].'">
  <input type = "hidden" name = "orderTime" value = "'.$param['orderTime'].'">
  <input type = "hidden" name = "tranType" value = "'.$param['tranType'].'">
  <input type = "hidden" name = "amount" value = "'.$param['amount'].'">
  <input type = "hidden" name = "curType" value = "'.$param['curType'].'">
  <input type = "hidden" name = "orderContent" value = "'.$param['orderContent'].'">
  <input type = "hidden" name = "orderMono" value = "'.$param['orderMono'].'">
  <input type = "hidden" name = "phdFlag" value = "'.$param['phdFlag'].'">
  <input type = "hidden" name = "notifyType" value = "'.$param['notifyType'].'">
  <input type = "hidden" name = "merURL" value = "'.$param['merURL'].'">
  <input type = "hidden" name = "goodsURL" value = "'.$param['goodsURL'].'">
  <input type = "hidden" name = "jumpSeconds" value = "'.$param['jumpSeconds'].'">
  <input type = "hidden" name = "payBatchNo" value = "'.$param['payBatchNo'].'">
  <input type = "hidden" name = "proxyMerName" value = "'.$param['proxyMerName'].'">
  <input type = "hidden" name = "proxyMerType" value = "'.$param['proxyMerType'].'">
  <input type = "hidden" name = "proxyMerCredentials" value = "'.$param['proxyMerCredentials'].'">
  <input type = "hidden" name = "netType" value = "'.$param['netType'].'">
  <input type = "hidden" name = "merSignMsg" value = "'.$param['signMsg_value'].'">
  <input type = "hidden" name = "issBankNo" value = "'.$param['issBankNo'].'">

  <input type="submit" value=" " class="pay_button" />
  </form>';
  return $pay_html;
 }

 /**
  * 处理函数
  */
 function respond()
 {  
  $tranCode = "cb2200_verify";
  $notifyMsg = $_REQUEST["notifyMsg"];  
  $lastIndex = strripos($notifyMsg,"|");
  $signMsg = substr($notifyMsg,$lastIndex+1); //签名信息
  $srcMsg = substr($notifyMsg,0,$lastIndex+1);//原文

  //连接地址
  $socketUrl = "tcp://127.0.0.1:8080";
  $fp = stream_socket_client($socketUrl, $errno, $errstr, 30);
  $retMsg="";
  if (!$fp) {
   //echo "$errstr ($errno)<br />\n";
   return false;
  }else{
   $in  = "<?xml version='1.0' encoding='UTF-8'?>";
   $in .= "<Message>";
   $in .= "<TranCode>".$tranCode."</TranCode>";
   $in .= "<MsgContent>".$notifyMsg."</MsgContent>";
   $in .= "</Message>";
   fwrite($fp, $in);
   while (!feof($fp)) {
    $retMsg =$retMsg.fgets($fp, 1024); 
   }
   fclose($fp);
  } 

  //解析返回xml
  $dom = new DOMDocument;
  $dom->loadXML($retMsg);

  $retCode = $dom->getElementsByTagName('retCode');
  $retCode_value = $retCode->item(0)->nodeValue;

  $errMsg = $dom->getElementsByTagName('errMsg');
  $errMsg_value = $errMsg->item(0)->nodeValue;

  $signMsg = $dom->getElementsByTagName('signMsg');
  $signMsg_value = $signMsg->item(0)->nodeValue;

  if($retCode_value != ''){
   //echo "交易返回码：".$retCode_value."<br>";
   //echo "交易错误信息：" .$errMsg_value."<br>";
   return false;
  }else{
   $arr = preg_split("/\|{1,}/",$srcMsg); 
   $pay_id = $arr[1];
   $action_note = base64_decode($arr[16]);
   // 完成订单。
   order_paid($pay_id, PS_PAYED, $action_note);
   //告诉用户交易完成
   return true; 
  }

  ///////////////// respond END ///////////////
 }

}

?>

语言包源码（languages/zh_cn/payment/bankcomm.php）:
复制代码 代码如下:
<?php

/**
 * 交通银行语言文件
 * by: Reson
 * 2014/03/31
 */

global $_LANG;

$_LANG['bankcomm'] = '交通银行在线支付';
$_LANG['bankcomm_desc'] = '交通银行在线支付';
$_LANG['pay_button'] = '交通银行支付';

?>

以下是调用的范例：

复制代码 代码如下:
include_once(ROOT_PATH . 'includes/modules/payment/bankcomm.php');
$order_['orderid'] = $order['order_sn'];
$order_['amount'] = $order['yd_price'];
$order_['orderMono'] = '测试'; //商家备注
$order_['goodsURL'] = "http://".$_SERVER['HTTP_HOST'].'/respond.php?code=bankcomm'; //取货URL
$pay_code = new bankcomm;
$pay_button = $pay_code->get_code($order_);
$order['pay_button'] = $pay_button; //即此时已经生成了一个支付按钮