微信小程序支付之单次支付

 //获取支付必备参数prepay_id 以及进行支付返回paysign
 public function pay($id)
 {

     //$order_id = input('order_id');
     //进行查询数据库获得支付参数，
     header("Content-type:text/html;charset=utf-8"); //此处进行字符集初始化，
     // $pay_data = DB::name('pay')->find();
     $order_data = db('order')->where('id', $id)->find();
     $notify_url =  'https://' . $_SERVER['HTTP_HOST'] . '/index.php/home/Index/payok';
     $data = array(
         //'appid' => 'wxf0d27e41678c566c',  //小程序appid
         'appid' => Config::get('appid'),
         'body' => '腾讯-游戏',
         //'mch_id' => '1484855592',         //微信支付商户号
         'mch_id' => Config::get('mch_id'),
         'nonce_str' => md5(date('YmdHis') . time() . rand(1000, 9999)),           //随机字符串
         'notify_url' => $notify_url,    //异步回调地址
         'openid' => $order_data['openid'],        //用户登录时获取的code中含有的值
         'out_trade_no' => $order_data['orderno'],               //商家订单号
         'spbill_create_ip' => '127.0.0.1',           //APP和网页支付提交用户端ip
         'total_fee' => $order_data['total']*100,                 //订单总额
         // 'total_fee' => 1,
         'attach' => 'borrow',           //确定是哪个商家进行的支付
         'trade_type' => 'JSAPI'           //交易类型
     );
     // echo_info($data);die;
     //$key = 'z4hgl4cnf5ac2wl3msiek5p0x3aiy2yc'; //商户秘钥
     $key = Config::get('shopsecret');
     //制作签名
     //签名步骤一：按字典序排序参数
     ksort($data);
     $buff = "";
     foreach ($data as $k => $v) {
         if ($k != "sign" && $v != "" && !is_array($v)) {
             $buff .= $k . "=" . $v . "&";
         }
     }
     $buff = trim($buff, "&");
     //签名步骤二：在string后加入KEY
     $string = $buff . "&key=" . $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
     $sign = strtoupper($string);
     $data['sign'] = $sign;
     ksort($data);
     //进行拼接数据
     $abc_xml = "<xml>";
     foreach ($data as $key => $val) {
         if (is_numeric($val)) {
             $abc_xml .= "<" . $key . ">" . $val . "</" . $key . ">";
         } else {
             $abc_xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
         }
     }
     $abc_xml .= "</xml>";
     //统一下单接口prepay_id
     $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
     // $abc_xml=array2xml($data);

     //dump($abc_xml);die;

     $xml = http_request_curl($url, $abc_xml);     //POST方式请求http
     //将XMl转化为数组

     $info = xml2array($xml);
     // echo_info($info);die();
     //进行拼接sign
     function MakeSign($params, $KEY)
     {
         //签名步骤一：按字典序排序数组参数
         ksort($params);
         $buff1 = '';
         foreach ($params as $k => $v) {
             if ($k != "sign" && $v != "" && !is_array($v)) {
                 $buff1 .= $k . "=" . $v . "&";
             }
         }
         $buff1 = trim($buff1, "&");
         //签名步骤二：在string后加入KEY
         $string = $buff1 . "&key=" . $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;
     }

     if (empty($info['prepay_id'])) {
         echo_info(array('status' => -1, 'message' => '商户号id和秘钥不匹配'));
     }
     $params = array(
         'appId' => Config::get('appid'),
         'nonceStr' => $data['nonce_str'],
         'package' => 'Sign=WXPay&prepay_id=' . $info['prepay_id'],
         'signType' => 'MD5',
         'timeStamp' => time()
     );

     //$key = 'z4hgl4cnf5ac2wl3msiek5p0x3aiy2yc'; //商户秘钥
     $key = Config::get('shopsecret');
     $info['paySign'] = MakeSign($params, $key);
     $info['timeStamp'] = "" . $params['timeStamp'] . "";
     $info['nonceStr'] = $params['nonceStr'];
     $info['package'] = $params['package'];

     //请求成功后进行返回数据信息
     if ($info['return_code'] == 'SUCCESS' || $info['result_code'] == 'SUCCESS') {
         echo_info(array('status' => 1, 'message' => '请求成功', 'data' => $info));
     } else {
         echo_info(array('status' => -1, 'message' => '请求失败', 'data' => $info));
     }
 }

public function payok()
{
    error_reporting(0);
    define('IN_MOBILE', true);
    libxml_disable_entity_loader(true);
    $xml = '<?xml version="1.0" encoding="utf-8"?>';
    $xml .= $GLOBALS['HTTP_RAW_POST_DATA'];
    $obj = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
    $arrayinfo = xmlToArray($obj);
    if (($arrayinfo['result_code'] = 'SUCCESS' || $arrayinfo['return_code'] = 'SUCCESS')) {
        $out_trade_no = $arrayinfo['out_trade_no']; //商户订单号
        $transaction_id = $arrayinfo['transaction_id']; //微信订单支付订单号

        $result = DB::name('order')->where('orderno', $out_trade_no)->find();
        if ($result['status'] != 1) {
            $datas = array(
                'status' => 1,
                'transid' => $transaction_id
            );
            $res = DB::name('order')->where('orderno', $out_trade_no)->update($datas);
            if ($res) {
                return '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
            } else {
                return '<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[NO]]></return_msg></xml>';
            }
        } else {
            return '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
        }

    } else {
        return '<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[NO]]></return_msg></xml>';
    }

}
//调试过程可能会出现商户号id和秘钥不匹配，重置一下秘钥就好