TP5实现微信H5支付

GetPayOrderData()这个方法，就是数据库查询，拿到订单信息。大家各有各的业务也就不贴图了。

unifiedOrder()统一下单方法，在上边SDK内，只需要引入类正确即可，我这里把他放在了第三方文件类库Vendor/weixinpay文件夹下

控制器H5Notify回调方法详解，这在网上百分之九十九没有开源的，也不知道为什么，我也是没找到，所以自己搞得，但是为了方便大家开发这里贡献出来了，写的若有问题可以评论给我，我好更改！但对于我们公司的业务，目前这套逻辑是够用的。

orderQuery（$out_trade_no）方法，在SDK内，这里需要调用你自己生成的商户订单号这个参数用于查询，微信推荐的是他们生成的transaction_id.如果你用的是transaction_id，请把方法内参数变换过来！就可以了.

这里有一个判断，看订单是否查询得到，我这里没有三个&&去分别判断return_code这三个参数，而是直接根据返回进行判断。

getCallBackH5PayData（）方法是统计返回数据，便于来插入你们公司的pay表。pay表就是微信返回成功信息表，参数不同统计的不同，就一个查询，这里就不截图了。

<?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'] = '1217752501201407';   //自定义的订单号，不能重复
     *  $params['total_fee'] = '100';                   //订单金额 只能为整数 单位为分
     *  $params['trade_type'] = 'APP';                  //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           = $this->get_client_ip();
            $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;
        }
        
        /**
         * @author:周洪亮<white_zhl@163.com>;
         * @copyright:2017/12/14;
         * @var:用户真实ip地址
         */
        public function get_client_ip()
        {
            $cip = "unknown";
            if ($_SERVER['REMOTE_ADDR']) {
                $cip = $_SERVER['REMOTE_ADDR'];
            } elseif (getenv("REMOTE_ADDR")) {
                $cip = getenv("REMOTE_ADDR");
            }
            
            return $cip;
        }
        
        /**
         * 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'];
            $data = array();
            if (empty($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];
            }
        }
    }

<?php
    
    namespace Home\Controller;
    
    use Common\Controller\CustomerBaseController;
    use Libraries\Expromotion\Expromotion;
    use Logic\Order\OrderLogic;
    
    /**
     * 微信支付
     */
    header("Content-type:text/html;charset=utf-8");
    
    class WeixinpayController extends CustomerBaseController
    {
        /**
         * @author:小萝卜<white_459623123@qq.com>;
         * @copyright:2017/12/12;
         * @var:H5支付,为了怕后来者看不懂，注释在下边
         */
        public function h5Pay()
        {
            $get = I('get.');
            if (empty($get['order_id'])) {
                $order_id = session('order_id');
            } else {
                $order_id[] = $get['order_id'];
            }
            $order_logic    = new OrderLogic();
            $pay_order_data = $order_logic->GetPayOrderData($order_id);//获取订单信息
            
            Vendor('Weixinpay.WeChatAPPpay');//引入微信H5支付SDK
            $config                 = C('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']         = '';                       //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": "https://*****.com","wap_name": "支付中"}}';
            $result                 = $wechatAppPay->unifiedOrder($params);//统一下单方法
            
            $url_encode_redirect_url = urlencode($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();
        }
        
        /**
         * @author:周洪亮<white_zhl@163.com>;
         * @copyright:2017/12/13;
         * @var:H5支付回调
         * @final:toxml();
         */
        function H5Notify()
        {
            Vendor('Weixinpay.WeChatH5pay');
            $out_trade_no = I('get.out_trade_no');
            $config       = C('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);
            if ($result) {
                $where['out_trade_no'] = $result['out_trade_no'];
                $find                  = M('pay')->where($where)->find();
                if (empty($find)) {
                    $wechat_pay_logic = new \Logic\Order\weChatPay();
                    $add_data         = $wechat_pay_logic->getCallBackH5PayData($result);
                    M('pay')->data($add_data)->add();
                    $order_save['status']      = 1;
                    $date                      = date('Y-m-d H:i:s');
                    $order_save['pay_time']    = $date;
                    $order_save['modify_time'] = $date;
                    $order_save['pay_name']    = 1;
                    $order_where['pay_sn']     = $result['out_trade_no'];
                    M('order')->where($order_where)->save($order_save);
                    deleteCarts($add_data['out_trade_no']);//删除购物车内商品
                } else {
                    echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
                }
            }
        }
        }

'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://m.***.com',//回调路径
    'NOTIFY_URL' => 'http://***.com/index.php/Home/Weixinpay/H5Notify/', // 接收支付状态的连接
),

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