php版本银联支付接口开发实例

银联支付，首先要注意二重要的部分：

PHP运行环境是5.4.18以上
开了扩展openss

开发手册上面的列子只做参考，因为基本都是错的。你可以试着去官网下一个demo。。。注意现在银联开发，没有测试密钥提供，只能在正式环境开发【20151219】

下面是我用ThinkPHP编写的一个支付类

/**
* 银联支付 v0.1
* @auther:Summer;
* @date:20151202
* **/
 
class NetPayAction extends BaseAction{
//在类初始化方法中，引入相关类库
public function _initialize() {
  header("Content-type:text/html;charset=utf-8");
  vendor('Netpay.util.common',"",".php"); //导入加密核心文件夹
  vendor('Netpay.util.SecssUtil',"",".class.php"); //导入加密核心文件夹
  vendor('Netpay.util.Settings_INI',"",".php"); //导入加密核心文件夹
  vendor('Netpay.util.Settings',"",".php"); //导入加密核心文件夹
  $this->securityPropFile= $_SERVER['DOCUMENT_ROOT'] . "/ThinkPHP/Extend/Vendor/Netpay/config/security.properties"; //谁知道这是啥，反正他们要我加的
  $this->b2cPaySend = __APP__."/Index/NetPay/b2cPaySend";
  $this->b2cRefundSend = __APP__."/Index/NetPay/b2cRefundSend";
  $this->b2cQuerySend = __APP__."/Index/NetPay/b2cQuerySend";
  $this->;MerBgUrl = __APP__."/Index/NetPay/MerBgUrl";
  $this->MerPageUrl = __APP__."/Index/NetPay/MerPageUrl";
}
 
public function index()
{
  $paramArray=array (
     'MerId' => '商户号',
     'MerOrderNo' => '0000001944663232',
     'OrderAmt' => '1',
     'TranDate' => '20151219',
    'TranTime' =>'171248',
    'TranType' => '0001',
    'BusiType' =>'0001',
    'Version' => '20140728',
    'CurryNo' => 'CNY',
    'AccessType' =>; '0',
    'CommodityMsg' => '测试商品1号',
    'MerPageUrl' => $this->MerBgUrl,
    'MerBgUrl' =>$this->MerPageUrl,
    'MerResv' => 'MerResv',
 );
 
 if (count($paramArray) >0) {
    $dispatchUrl = $this->b2cPaySend;
    $transResvedJson = array();
    $cardInfoJson = array();
    $sendMap = array();
     foreach ($paramArray as $key => $value) {
      if (isEmpty($value)) {
        continue;
     }
     if (startWith($key, "trans_")) {
          $key = substr($key, strlen("trans_"));
                $transResvedJson[$key] = $value;
     } else
         if (startWith($key, "card_")) {
              $key = substr($key, strlen("card_"));
              $cardInfoJson[$key] = $value;
         } else {
              $sendMap[$key] = $value;
         }
   }
 
   $transResvedStr = null;
   $cardResvedStr = null;
   if (count($transResvedJson) >0) {
      $transResvedStr = json_encode($transResvedJson);
   }
   if (count($cardInfoJson) > 0) {
      $cardResvedStr = json_encode($cardInfoJson);
   }
 
  $secssUtil = new SecssUtil();
  if (! isEmpty($transResvedStr)) {
    $transResvedStr = $secssUtil->decryptData($transResvedStr);
    $sendMap["TranReserved"] = $transResvedStr;
   }
  if (! isEmpty($cardResvedStr)) {
     $cardResvedStr = $secssUtil->decryptData($cardResvedStr);
     $sendMap["card_"] = $cardResvedStr;
   }
   $securityPropFile = $this>securityPropFile;
   $secssUtil->init($securityPropFile);
   $secssUtil->sign($sendMap);
 
   $sendMap["Signature"] = $secssUtil->getSign();
   $_SESSION = $sendMap;
   header("Location:" . $dispatchUrl);
 }
}
 
public function b2cPaySend(){
   layout(false);
   $settings = new Settings_INI();
   $settings->oad($this->securityPropFile);
   $pay_url = "https://payment.chinapay.com/CTITS/service/rest/page/nref/000000000017/0/0/0/0/0";
   $html = "