CodeIgniter框架集成微信扫码支付SDK

版本:CI3.0

微信扫码支付:模式二

下载官方demo:https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=11_1

 

我是个小菜鸟,第一次研究这个,感觉无从下手,走了很多弯路后,也算是完成了。现分享下希望对大家有帮助。

首先下载官方demo,将文件当在libraries/  并命名为 Wxpay。在ci配置文件config/ 下新建 wxpay_config.php 并完成配置。

wxpay_config.php

 

 

 

 

 

 

在libraries/ 下新建 CI_Wechatpay.php 。

CI_Wechatpay.php

 


在libraries/ 下新建Wechatpay.php   这是前辈封装好的。尽情的享用吧,其实这里已经把所以核心都封装起来了,所以demo中的文件只需要保留cert/   logs/ 、但libraries/Wxpay/example/log.php  这个很有用,所以要把它放在Wxpay/下。

 

Wechatpay.php

 

_config = $config;
    }
    /**
     * JSAPI获取prepay_id
     * @param $body
     * @param $out_trade_no
     * @param $total_fee
     * @param $notify_url
     * @param $openid
     * @return null
     */
    public function getPrepayId($body,$out_trade_no,$total_fee,$notify_url,$openid) {
        $data = array();
        $data["nonce_str"]    = $this->get_nonce_string();
        $data["body"]         = $body;
        $data["out_trade_no"] = $out_trade_no;
        $data["total_fee"]    = $total_fee;
        $data["spbill_create_ip"] = $_SERVER["REMOTE_ADDR"];
        $data["notify_url"]   = $notify_url;
        $data["trade_type"]   = self::TRADETYPE_JSAPI;
        $data["openid"]   = $openid;
        $result = $this->unifiedOrder($data);
        if ($result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS") {
            return $result["prepay_id"];
        } else {
            $this->error = $result["return_code"] == "SUCCESS" ? $result["err_code_des"] : $result["return_msg"];
            $this->errorXML = $this->array2xml($result);
            return null;
        }
    }
    private function get_nonce_string() {
        return substr(str_shuffle("abcdefghijklmnopqrstuvwxyz0123456789"),0,32);
    }
    /**
     * 统一下单接口
     */
    public function unifiedOrder($params) {
        $data = array();
        $data["appid"] = $this->_config["appid"];
        $data["mch_id"] = $this->_config["mch_id"];
        $data["device_info"] = (isset($params['device_info'])&&trim($params['device_info'])!='')?$params['device_info']:null;
        $data["nonce_str"] = $this->get_nonce_string();
        $data["body"] = $params['body'];
        $data["detail"] = isset($params['detail'])?$params['detail']:null;//optional
        $data["attach"] = isset($params['attach'])?$params['attach']:null;//optional
        $data["out_trade_no"] = isset($params['out_trade_no'])?$params['out_trade_no']:null;
        $data["fee_type"] = isset($params['fee_type'])?$params['fee_type']:'CNY';
        $data["total_fee"]    = $params['total_fee'];
        $data["spbill_create_ip"] = $params['spbill_create_ip'];
        $data["time_start"] = isset($params['time_start'])?$params['time_start']:null;//optional
        $data["time_expire"] = isset($params['time_expire'])?$params['time_expire']:null;//optional
        $data["goods_tag"] = isset($params['goods_tag'])?$params['goods_tag']:null;
        $data["notify_url"] = $params['notify_url'];
        $data["trade_type"] = $params['trade_type'];
        $data["product_id"] = isset($params['product_id'])?$params['product_id']:null;//required when trade_type = NATIVE
        $data["openid"] = isset($params['openid'])?$params['openid']:null;//required when trade_type = JSAPI
        $result = $this->post(self::URL_UNIFIEDORDER, $data);
        return $result;
    }
    private function post($url, $data,$cert = false) {
        $data["sign"] = $this->sign($data);
        $xml = $this->array2xml($data);
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL, $url);
        if($cert == true){
            //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, $this->_config['sslcertPath']);
            curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
            curl_setopt($ch,CURLOPT_SSLKEY, $this->_config['sslkeyPath']);
        }
        $content = curl_exec($ch);
        $array = $this->xml2array($content);
        return $array;
    }
    /**
     * 数据签名
     * @param $data
     * @return string
     */
    private function sign($data) {
        ksort($data);
        $string1 = "";
        foreach ($data as $k => $v) {
            if ($v && trim($v)!='') {
                $string1 .= "$k=$v&";
            }
        }
        $stringSignTemp = $string1 . "key=" . $this->_config["apikey"];
        $sign = strtoupper(md5($stringSignTemp));
        return $sign;
    }
    private function array2xml($array) {
        $xml = "" . PHP_EOL;
        foreach ($array as $k => $v) {
            if($v && trim($v)!='')
                $xml .= "<$k>" . PHP_EOL;
        }
        $xml .= "";
        return $xml;
    }
    private function xml2array($xml) {
        $array = array();
        $tmp = null;
        try{
            $tmp = (array) simplexml_load_string($xml);
        }catch(Exception $e){}
        if($tmp && is_array($tmp)){
            foreach ( $tmp as $k => $v) {
                $array[$k] = (string) $v;
            }
        }
        return $array;
    }
    /**
     * 扫码支付(模式二)获取支付二维码
     * @param $body
     * @param $out_trade_no
     * @param $total_fee
     * @param $notify_url
     * @param $product_id
     * @return null
     */
    public function getCodeUrl($body,$out_trade_no,$total_fee,$notify_url,$product_id){
        $data = array();
        $data["nonce_str"]    = $this->get_nonce_string();
        $data["body"]         = $body;
        $data["out_trade_no"] = $out_trade_no;
        $data["total_fee"]    = $total_fee;
        $data["spbill_create_ip"] = $_SERVER["SERVER_ADDR"];
        $data["notify_url"]   = $notify_url;
        $data["trade_type"]   = self::TRADETYPE_NATIVE;
        $data["product_id"]   = $product_id;
        $result = $this->unifiedOrder($data);
        if ($result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS") {
            return $result["code_url"];
        } else {
            $this->error = $result["return_code"] == "SUCCESS" ? $result["err_code_des"] : $result["return_msg"];
            return null;
        }
    }
    /**
     * 查询订单
     * @param $transaction_id
     * @param $out_trade_no
     * @return array
     */
    public function orderQuery($transaction_id,$out_trade_no){
        $data = array();
        $data["appid"] = $this->_config["appid"];
        $data["mch_id"] = $this->_config["mch_id"];
        $data["transaction_id"] = $transaction_id;
        $data["out_trade_no"] = $out_trade_no;
        $data["nonce_str"] = $this->get_nonce_string();
        $result = $this->post(self::URL_ORDERQUERY, $data);
        return $result;
    }
    /**
     * 关闭订单
     * @param $out_trade_no
     * @return array
     */
    public function closeOrder($out_trade_no){
        $data = array();
        $data["appid"] = $this->_config["appid"];
        $data["mch_id"] = $this->_config["mch_id"];
        $data["out_trade_no"] = $out_trade_no;
        $data["nonce_str"] = $this->get_nonce_string();
        $result = $this->post(self::URL_CLOSEORDER, $data);
        return $result;
    }
    /**
     * 申请退款 - 使用商户订单号
     * @param $out_trade_no 商户订单号
     * @param $out_refund_no 退款单号
     * @param $total_fee 总金额(单位:分)
     * @param $refund_fee 退款金额(单位:分)
     * @param $op_user_id 操作员账号
     * @return array
     */
    public function refund($out_trade_no,$out_refund_no,$total_fee,$refund_fee,$op_user_id){
        $data = array();
        $data["appid"] = $this->_config["appid"];
        $data["mch_id"] = $this->_config["mch_id"];
        $data["nonce_str"] = $this->get_nonce_string();
        $data["out_trade_no"] = $out_trade_no;
        $data["out_refund_no"] = $out_refund_no;
        $data["total_fee"] = $total_fee;
        $data["refund_fee"] = $refund_fee;
        $data["op_user_id"] = $op_user_id;
        $result = $this->post(self::URL_REFUND, $data,true);
        return $result;
    }
    /**
     * 申请退款 - 使用微信订单号
     * @param $out_trade_no 商户订单号
     * @param $out_refund_no 退款单号
     * @param $total_fee 总金额(单位:分)
     * @param $refund_fee 退款金额(单位:分)
     * @param $op_user_id 操作员账号
     * @return array
     */
    public function refundByTransId($transaction_id,$out_refund_no,$total_fee,$refund_fee,$op_user_id){
        $data = array();
        $data["appid"] = $this->_config["appid"];
        $data["mch_id"] = $this->_config["mch_id"];
        $data["nonce_str"] = $this->get_nonce_string();
        $data["transaction_id"] = $transaction_id;
        $data["out_refund_no"] = $out_refund_no;
        $data["total_fee"] = $total_fee;
        $data["refund_fee"] = $refund_fee;
        $data["op_user_id"] = $op_user_id;
        $result = $this->post(self::URL_REFUND, $data,true);
        return $result;
    }
    /**
     * 下载对账单
     * @param $bill_date 下载对账单的日期,格式:20140603
     * @param $bill_type 类型
     * @return array
     */
    public function downloadBill($bill_date,$bill_type = 'ALL'){
        $data = array();
        $data["appid"] = $this->_config["appid"];
        $data["mch_id"] = $this->_config["mch_id"];
        $data["bill_date"] = $bill_date;
        $data["bill_type"] = $bill_type;
        $data["nonce_str"] = $this->get_nonce_string();
        $result = $this->post(self::URL_DOWNLOADBILL, $data);
        return $result;
    }
    /**
     * 获取js支付使用的第二个参数
     */
    public function get_package($prepay_id) {
        $data = array();
        $data["appId"] = $this->_config["appid"];
        $data["timeStamp"] = time();
        $data["nonceStr"]  = $this->get_nonce_string();
        $data["package"]   = "prepay_id=$prepay_id";
        $data["signType"]  = "MD5";
        $data["paySign"]   = $this->sign($data);
        return $data;
    }
    /**
     * 获取发送到通知地址的数据(在通知地址内使用)
     * @return 结果数组,如果不是微信服务器发送的数据返回null
     *          appid
     *          bank_type
     *          cash_fee
     *          fee_type
     *          is_subscribe
     *          mch_id
     *          nonce_str
     *          openid
     *          out_trade_no    商户订单号
     *          result_code
     *          return_code
     *          sign
     *          time_end
     *          total_fee       总金额
     *          trade_type
     *          transaction_id  微信支付订单号
     */
    public function get_back_data() {
        $xml = file_get_contents("php://input");
        $data = $this->xml2array($xml);
        if ($this->validate($data)) {
            return $data;
        } else {
            return null;
        }
    }
    /**
     * 验证数据签名
     * @param $data 数据数组
     * @return 数据校验结果
     */
    public function validate($data) {
        if (!isset($data["sign"])) {
            return false;
        }
        $sign = $data["sign"];
        unset($data["sign"]);
        return $this->sign($data) == $sign;
    }
    /**
     * 响应微信支付后台通知
     * @param $return_code 返回状态码 SUCCESS/FAIL
     * @param $return_msg  返回信息
     */
    public function response_back($return_code="SUCCESS", $return_msg=null) {
        $data = array();
        $data["return_code"] = $return_code;
        if ($return_msg) {
            $data["return_msg"] = $return_msg;
        }
        $xml = $this->array2xml($data);
        print $xml;
    }
}

 

 

接下来我是在 controller/order.php 文件下封装个方法   这里也用到了log.php ,注意看使用方法。在调bug时非常好用。

Order.php

 

       /**
         * wxPay 微信支付接口
         * @param $Id 订单ID
         * @author lyne
         */
        public function wxPay($id){

            require_once (APPPATH.'libraries/Wxpay/log.php');
            //初始化日志
            $logHandler= new CLogFileHandler(APPPATH."libraries/Wxpay/logs/".date('Y-m-d').'.log');
            Log::Init($logHandler, 15);

            // 查预先生成的订单信息
            $this->load->model('order_model');
            $o = $this->order_model->getMyOrderDetails($id);
            // 调用微信扫码支付接口配置信息
            $this->load->config('wxpay_config');
            $wxconfig['appid']=$this->config->item('appid');
            $wxconfig['mch_id']=$this->config->item('mch_id');
            $wxconfig['apikey']=$this->config->item('apikey');
            $wxconfig['appsecret']=$this->config->item('appsecret');
            $wxconfig['sslcertPath']=$this->config->item('sslcertPath');
            $wxconfig['sslkeyPath']=$this->config->item('sslkeyPath');
            //由于此类库构造函数需要传参,我们初始化类库就传参数给他吧
            $this->load->library('CI_Wechatpay',$wxconfig);

            $param['body']=$o['goods_name']; //"商品名称(自行看文档具体填什么)";
            $param['attach']=$o['id']; // "我有个参数要传我就穿了个id过来,这里不要有空格避免出错";
            $param['detail']=$o['order_code'];  //"我填了商品名称加订单号";
            $param['out_trade_no']=$o['order_code']; //"商户订单号";
            $param['total_fee']=$o['order_amount']*100; //"金额,记得乘以100,微信支付单位默认分";//如$total_fee*100
            $param["spbill_create_ip"] =$_SERVER['REMOTE_ADDR'];//客户端IP地址
            $param["time_start"] = date("YmdHis");//请求开始时间
            $param["time_expire"] = date("YmdHis", time() + 600);//请求超时时间 10分钟
            $param["goods_tag"] = urldecode('运费:') . $o['postage']; //商品标签,自行填写
            $param["notify_url"] = "http://".$_SERVER['HTTP_HOST']."/wxnotify/"; //自行定义异步通知url
            $param["trade_type"] = "NATIVE";//扫码支付模式二
            $param["product_id"] = $o['goods_id']; //正好有产品id就传了个,看文档说自己定义
            //调用统一下单API接口
            $result=$this->ci_wechatpay->unifiedOrder($param);//这里可以加日志输出,
            // 写入日志
            log::debug(json_encode($result));
            //成功(return_code和result_code都为SUCCESS)就会返回含有带支付二维码链接的数据
            $data=array();
            if (isset($result["code_url"]) && !empty($result["code_url"])) {//二维码图片链接
                $data['wxurl'] = $result["code_url"];
                //这里传递商户订单号到扫码视图,是因为我想做跳转,根据商户号去查询订单是否支付成功,如果成功了就跳转,定时轮询微信服务器(这个谁有好的方法可以分享给我啊,表示感谢啦)
                $data['orderno'] = $param['out_trade_no'];
                // 写入日志
                
                $this->assign('time_expire',strtotime($param["time_expire"])); //订单失效时间
                $this->assign('order_no',$data['orderno']);
                $this->assign('wxurl',urlencode($data['wxurl'])); // 获取到的二维码地址
                $this->display('wxpay/index.html');
            }

        }


view/wxpay/index.html

 

 






微信支付


    
微信扫码支付测试

模式二扫码支付

 

 

 

 

 

OK!说的很细了,大家应该成功了吧。 欢迎大家发现问题并提出!共同解决。

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