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本文實例講述了php版銀聯支付接口開發的方法。分享給大家供大家參考，具體如下：

支付接口現在有第三方的支付接口也有銀行的支付接口。這里就來介紹php版本銀聯支付接口開發的方法。

銀聯支付，首先要注意二重要的部分：

PHP運行環境是5.4.18以上

開了擴展openssl

開發手冊上面的列子只做參考，因為基本都是錯的。你可以試著去官網下一個demo。。。注意現在銀聯開發，沒有測試密鑰提供，只能在正式環境開發

下面是我用ThinkPHP編寫的一個支付類

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									/**

									* 銀聯支付 v0.1

									* @auther:Summer<[email protected]>;

									* @date:20151202

									* **/

									class NetPayAction extends BaseAction{

									//在類初始化方法中，引入相關類庫

									public function _initialize() {

									 header("Content-type:text/html;charset=utf-8");

									 vendor('Netpay.util.common',"",".php"); //導入加密核心文件夾

									 vendor('Netpay.util.SecssUtil',"",".class.php"); //導入加密核心文件夾

									 vendor('Netpay.util.Settings_INI',"",".php"); //導入加密核心文件夾

									 vendor('Netpay.util.Settings',"",".php"); //導入加密核心文件夾

									 $this-&gt;securityPropFile= $_SERVER['DOCUMENT_ROOT'] . "/ThinkPHP/Extend/Vendor/Netpay/config/security.properties"; //誰知道這是啥，反正他們要我加的

									 $this->b2cPaySend = __APP__."/Index/NetPay/b2cPaySend";

									 $this-&gt;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' => '商戶號',

									   'MerOrderNo' => '0000001944663232',

									   'OrderAmt' => '1',

									   'TranDate' => '20151219',

									  'TranTime' =>'171248',

									  'TranType' => '0001',

									  'BusiType' =>'0001',

									  'Version' => '20140728',

									  'CurryNo' => 'CNY',

									  'AccessType' =>; '0',

									  'CommodityMsg' => '測試商品1號',

									  'MerPageUrl' => $this-&gt;MerBgUrl,

									  'MerBgUrl' =>$this-&gt;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) &gt; 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";

									  $html = "<form name='payment' action='{$pay_url}' method='POST' target='_blank'>;";

									  $params = "TranReserved;MerId;MerOrderNo;OrderAmt;CurryNo;TranDate;SplitMethod;BusiType;MerPageUrl;MerBgUrl;SplitType;MerSplitMsg;PayTimeOut;MerResv;Version;BankInstNo;CommodityMsg;Signature;AccessType;AcqCode;OrderExpiryTime;TranType;RemoteAddr;Referred;TranTime;TimeStamp;CardTranData";

									  foreach ($_SESSION as $k =>$v) {

									   if (strstr($params, $k)) {

									     $html .= "<input type='hidden' name = '" . $k . "' value ='" . $v . "'/>";

									   }

									  }

									    $html .= "<nput type='button' type='hidden' value='提交訂單' >";

									    $html .= "<;/from>";

									    $this->html = $html;

									    $this->display();

									}

									public function pgReturn(){

									 if ($_POST) {

									   if (count($_POST) > 0) {

									    $secssUtil = new SecssUtil();

									    $securityPropFile = $this>securityPropFile;

									    $secssUtil->init($securityPropFile);

									    $text = array();

									    foreach($_POST as $key=>$value){

									      $text[$key] = urldecode($value);

									    }

									   if ($secssUtil->verify($text)) {

									            //支付成功

									     $_SESSION["VERIFY_KEY"] = "success";

									   } else {

									    //支付失敗

									     $_SESSION["VERIFY_KEY"] = "fail";

									   }

									  }

									  }

									 }

									}