'WEIXINPAY_CONFIG' => array(
         'APPID'      => '', // 微信支付APPID
         'MCHID'      => '', // 微信支付MCHID 商户收款账号
         'KEY'        => '', // 微信支付KEY
         'APPSECRET'  => '',  //公众帐号secert
         'REDIRECT_URL'=>'http://*******************/Wxpay/H5Notify',//回调路径
         'NOTIFY_URL' => 'http://*******************/Wxpay/H5Notify/', // 接收支付状态的连接
     ), 
public function h5Pay()
     {
         header("Content-type:text/html;charset=utf-8");
         $get = input('get.');
         //获取订单信息
         $pay_order_data = [
             "pay_sn"=>date("YmdHis"),
             "sum"=>$get["num"],
             "month"=>$get["month"]
         ];        include_once APP_PATH."/index/controller/wechatAppPay.php";//引入微信H5支付SDK
         $config = Config::get("WEIXINPAY_CONFIG");//读取微信配置
         $notify_url             = $config['NOTIFY_URL'] . 'out_trade_no/' . $pay_order_data['pay_sn'];//拼接回调路径,带单号方便回调
         $wechatAppPay           = new \wechatAppPay($config['APPID'], $config['MCHID'], $notify_url, $config['KEY']);
         $params['body']         = iconv("GB2312//IGNORE","UTF-8",'测试');                      //商品描述
         $params['out_trade_no'] = $pay_order_data['pay_sn'];    //自定义的订单号
         $params['total_fee']    = $pay_order_data['sum'] * 100;                       //订单金额 只能为整数 单位为分
         $params['trade_type']   = 'MWEB';                   //交易类型 JSAPI | NATIVE | APP | WAP
         $params['scene_info']   = '{"h5_info": {"type":"Wap","wap_url": "http://www.banyoudaquan.com","wap_name": "支付中"}}';
         $result                 = $wechatAppPay->unifiedOrder($params);//统一下单方法
         //print_r($result);die;
         $url_encode_redirect_url = urlencode($config['REDIRECT_URL']);//支付成功回调路径,在Home/config.php文件中可配置
         $url = $result['mweb_url'] . '&redirect_url=' . $url_encode_redirect_url;//拼接支付链接
         echo "<script>window.location.href='" . $url . "';</script>";
         exit();
     } 
/**
      * @var:H5支付回调
      * @final:toxml();
      */
     function H5Notify()
     {
         include_once "./wechatAppPay.php";
         $out_trade_no = input('get.out_trade_no');
         $config       = Config::get('WEIXINPAY_CONFIG');
         $notify_url   = $config['NOTIFY_URL'] . 'out_trade_no/' . $out_trade_no;
         $wechatAppPay = new wechatAppPay($config['APPID'], $config['MCHID'], $notify_url, $config['KEY']);
         $result       = $wechatAppPay->orderQuery($out_trade_no);
     }?>
 
 
 
<?php
 //use Flight;
     /**
      * 微信支付服务器端下单
      * 微信APP支付文档地址:  https://pay.weixin.qq.com/wiki/doc/api/app.php?chapter=8_6
      * 使用示例
      *  构造方法参数
      *      'appid'     =>  //填写微信分配的公众账号ID
      *      'mch_id'    =>  //填写微信支付分配的商户号
      *      'notify_url'=>  //填写微信支付结果回调地址
      *      'key'       =>  //填写微信商户支付密钥
      *  );
      *  统一下单方法
      *  $WechatAppPay = new wechatAppPay($options);
      *  $params['body'] = '商品描述';                   //商品描述
      *  $params['out_trade_no'] = ' ';   //自定义的订单号,不能重复
      *  $params['total_fee'] = '1';                   //订单金额 只能为整数 单位为分
      *  $params['trade_type'] = 'MWEB';                  //交易类型 JSAPI | NATIVE |APP | WAP 
      *  $wechatAppPay->unifiedOrder( $params );
      */
     class wechatAppPay
     {   
         //接口API URL前缀
         const API_URL_PREFIX = 'https://api.mch.weixin.qq.com';
         //下单地址URL
         const UNIFIEDORDER_URL = "/pay/unifiedorder";
         //查询订单URL
         const ORDERQUERY_URL = "/pay/orderquery";
         //关闭订单URL
         const CLOSEORDER_URL = "/pay/closeorder";
         //公众账号ID
         private $appid;
         //商户号
         private $mch_id;
         //随机字符串
         private $nonce_str;
         //签名
         private $sign;
         //商品描述
         private $body;
         //商户订单号
         private $out_trade_no;
         //支付总金额
         private $total_fee;
         //终端IP
         private $spbill_create_ip;
         //支付结果回调通知地址
         private $notify_url;
         //交易类型
         private $trade_type;
         //支付密钥
         private $key;
         //证书路径
         private $SSLCERT_PATH;
         private $SSLKEY_PATH;
         //所有参数
         private $params = array();
         public function __construct($appid, $mch_id, $notify_url, $key)
         {
             $this->appid = $appid;
             $this->mch_id = $mch_id;
             $this->notify_url = $notify_url;
             $this->key = $key;
         }
         /**
          * 下单方法
          * @param   $params 下单参数
          */
         public function unifiedOrder( $params ){
             $this->body = $params['body'];
             $this->out_trade_no = $params['out_trade_no'];
             $this->total_fee = $params['total_fee'];
             $this->trade_type = $params['trade_type'];
             $this->scene_info = $params['scene_info'];
             $this->nonce_str = $this->genRandomString();
             $this->spbill_create_ip = $_SERVER['REMOTE_ADDR'];
             $this->params['appid'] = $this->appid;
             $this->params['mch_id'] = $this->mch_id;
             $this->params['nonce_str'] = $this->nonce_str;
             $this->params['body'] = $this->body;
             $this->params['out_trade_no'] = $this->out_trade_no;
             $this->params['total_fee'] = $this->total_fee;
             $this->params['spbill_create_ip'] = $this->spbill_create_ip;
             $this->params['notify_url'] = $this->notify_url;
             $this->params['trade_type'] = $this->trade_type;
             $this->params['scene_info'] = $this->scene_info;
             //获取签名数据
             $this->sign = $this->MakeSign( $this->params );
             $this->params['sign'] = $this->sign;
             $xml = $this->data_to_xml($this->params);
             $response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::UNIFIEDORDER_URL);
             if( !$response ){
                 return false;
             }
             $result = $this->xml_to_data( $response );
             if( !empty($result['result_code']) && !empty($result['err_code']) ){
                 $result['err_msg'] = $this->error_code( $result['err_code'] );
             }
             return $result;
         }
         /**
          * 查询订单信息
          * @param $out_trade_no     订单号
          * @return array
          */
         public function orderQuery( $out_trade_no ){
             $this->params['appid'] = $this->appid;
             $this->params['mch_id'] = $this->mch_id;
             $this->params['nonce_str'] = $this->genRandomString();
             $this->params['out_trade_no'] = $out_trade_no;
             //获取签名数据
             $this->sign = $this->MakeSign( $this->params );
             $this->params['sign'] = $this->sign;
             $xml = $this->data_to_xml($this->params);
             $response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::ORDERQUERY_URL);
             if( !$response ){
                 return false;
             }
             $result = $this->xml_to_data( $response );
             if( !empty($result['result_code']) && !empty($result['err_code']) ){
                 $result['err_msg'] = $this->error_code( $result['err_code'] );
             }
             return $result;
         }
         /**
          * 关闭订单
          * @param $out_trade_no     订单号
          * @return array
          */
         public function closeOrder( $out_trade_no ){
             $this->params['appid'] = $this->appid;
             $this->params['mch_id'] = $this->mch_id;
             $this->params['nonce_str'] = $this->genRandomString();
             $this->params['out_trade_no'] = $out_trade_no;
             //获取签名数据
             $this->sign = $this->MakeSign( $this->params );
             $this->params['sign'] = $this->sign;
             $xml = $this->data_to_xml($this->params);
             $response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::CLOSEORDER_URL);
             if( !$response ){
                 return false;
             }
             $result = $this->xml_to_data( $response );
             return $result;
         }
         /**
          * 
          * 获取支付结果通知数据
          * return array
          */
         public function getNotifyData(){
             //获取通知的数据
             $xml = $GLOBALS['HTTP_RAW_POST_DATA'];
             //echo 123;die;
             $data = array();
             if( empty($xml) ){
                 return false;
             }
             $data = $this->xml_to_data( $xml );
             if( !empty($data['return_code']) ){
                 if( $data['return_code'] == 'FAIL' ){
                     return false;
                 }
             }
             return $data;
         }
         /**
          * 接收通知成功后应答输出XML数据
          * @param string $xml
          */
         public function replyNotify(){
             $data['return_code'] = 'SUCCESS';
             $data['return_msg'] = 'OK';
             $xml = $this->data_to_xml( $data );
             echo $xml;
             die();
         }
          /**
           * 生成APP端支付参数
           * @param  $prepayid   预支付id
           */
          public function getAppPayParams( $prepayid ){
              $data['appid'] = $this->appid;
              $data['partnerid'] = $this->mch_id;
              $data['prepayid'] = $prepayid;
              $data['package'] = 'Sign=WXPay';
              $data['noncestr'] = $this->genRandomString();
              $data['timestamp'] = time();
              $data['sign'] = $this->MakeSign( $data ); 
              return $data;
          }
         /**
          * 生成签名
          *  @return 签名
          */
         public function MakeSign( $params ){
             //签名步骤一:按字典序排序数组参数
             ksort($params);
             $string = $this->ToUrlParams($params);
             //签名步骤二:在string后加入KEY
             $string = $string . "&key=".$this->key;
             //签名步骤三:MD5加密
             $string = md5($string);
             //签名步骤四:所有字符转为大写
             $result = strtoupper($string);
             return $result;
         }
         /**
          * 将参数拼接为url: key=value&key=value
          * @param   $params
          * @return  string
          */
         public function ToUrlParams( $params ){
             $string = '';
             if( !empty($params) ){
                 $array = array();
                 foreach( $params as $key => $value ){
                     $array[] = $key.'='.$value;
                 }
                 $string = implode("&",$array);
             }
             return $string;
         }
         /**
          * 输出xml字符
          * @param   $params     参数名称
          * return   string      返回组装的xml
          **/
         public function data_to_xml( $params ){
             if(!is_array($params)|| count($params) <= 0)
             {
                 return false;
             }
             $xml = "<xml>";
             foreach ($params as $key=>$val)
             {
                 if (is_numeric($val)){
                     $xml.="<".$key.">".$val."</".$key.">";
                 }else{
                     $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
                 }
             }
             $xml.="</xml>";
             return $xml; 
         }
         /**
          * 将xml转为array
          * @param string $xml
          * return array
          */
         public function xml_to_data($xml){  
             if(!$xml){
                 return false;
             }
             //将XML转为array
             //禁止引用外部xml实体
             libxml_disable_entity_loader(true);
             $data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);        
             return $data;
         }
         /**
          * 获取毫秒级别的时间戳
          */
         private static function getMillisecond(){
             //获取毫秒的时间戳
             $time = explode ( " ", microtime () );
             $time = $time[1] . ($time[0] * 1000);
             $time2 = explode( ".", $time );
             $time = $time2[0];
             return $time;
         }
         /**
          * 产生一个指定长度的随机字符串,并返回给用户 
          * @param type $len 产生字符串的长度
          * @return string 随机字符串
          */
         private function genRandomString($len = 32) {
             $chars = array(
                 "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k",
                 "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
                 "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G",
                 "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
                 "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2",
                 "3", "4", "5", "6", "7", "8", "9"
             );
             $charsLen = count($chars) - 1;
             // 将数组打乱 
             shuffle($chars);
             $output = "";
             for ($i = 0; $i < $len; $i++) {
                 $output .= $chars[mt_rand(0, $charsLen)];
             }
             return $output;
         }
         /**
          * 以post方式提交xml到对应的接口url
          * 
          * @param string $xml  需要post的xml数据
          * @param string $url  url
          * @param bool $useCert 是否需要证书,默认不需要
          * @param int $second   url执行超时时间,默认30s
          * @throws WxPayException
          */
         private function postXmlCurl($xml, $url, $useCert = false, $second = 30){       
             $ch = curl_init();
             //设置超时
             curl_setopt($ch, CURLOPT_TIMEOUT, $second);
             curl_setopt($ch,CURLOPT_URL, $url);
             curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
             curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);
             //设置header
             curl_setopt($ch, CURLOPT_HEADER, FALSE);
             //要求结果为字符串且输出到屏幕上
             curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
             if($useCert == true){
                 //设置证书
                 //使用证书:cert 与 key 分别属于两个.pem文件
                 curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
                 //curl_setopt($ch,CURLOPT_SSLCERT, WxPayConfig::SSLCERT_PATH);
                 curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
                 //curl_setopt($ch,CURLOPT_SSLKEY, WxPayConfig::SSLKEY_PATH);
             }
             //post提交方式
             curl_setopt($ch, CURLOPT_POST, TRUE);
             curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
             //运行curl
             $data = curl_exec($ch);
             //返回结果
             if($data){
                 curl_close($ch);
                 return $data;
             } else { 
                 $error = curl_errno($ch);
                 curl_close($ch);
                 return false;
             }
         }
         /**
           * 错误代码
           * @param  $code       服务器输出的错误代码
           * return string
           */
          public function error_code( $code ){
              $errList = array(
                 'NOAUTH'                =>  '商户未开通此接口权限',
                 'NOTENOUGH'             =>  '用户帐号余额不足',
                 'ORDERNOTEXIST'         =>  '订单号不存在',
                 'ORDERPAID'             =>  '商户订单已支付,无需重复操作',
                 'ORDERCLOSED'           =>  '当前订单已关闭,无法支付',
                 'SYSTEMERROR'           =>  '系统错误!系统超时',
                 'APPID_NOT_EXIST'       =>  '参数中缺少APPID',
                 'MCHID_NOT_EXIST'       =>  '参数中缺少MCHID',
                 'APPID_MCHID_NOT_MATCH' =>  'appid和mch_id不匹配',
                 'LACK_PARAMS'           =>  '缺少必要的请求参数',
                 'OUT_TRADE_NO_USED'     =>  '同一笔交易不能多次提交',
                 'SIGNERROR'             =>  '参数签名结果不正确',
                 'XML_FORMAT_ERROR'      =>  'XML格式错误',
                 'REQUIRE_POST_METHOD'   =>  '未使用post传递参数 ',
                 'POST_DATA_EMPTY'       =>  'post数据不能为空',
                 'NOT_UTF8'              =>  '未使用指定编码格式',
              ); 
              if( array_key_exists( $code , $errList ) ){
                 return $errList[$code];
              }
          }
     }