1. 程式人生 > >thinkphp3.2實現微信JSAPI支付

thinkphp3.2實現微信JSAPI支付

<?php
namespace Mobile\Action;
class WxPayAction extends BaseAction {
 
    private $wxpayConfig;
    private $wxpay;
    private $parameters;
    private $returnParameters;
 
    public function _initialize(){
        $this->wxpayConfig =  array('CURL_TIMEOUT' => 30);
    
        $this->wxpayConfig['appid'] = "";      // 微信公眾號身份的唯一標識appid
        $this->wxpayConfig['appsecret'] = "";  // APP金鑰
        $this->wxpayConfig['mchid'] = "";          // 微信支付商戶號
        $this->wxpayConfig['key'] = "";      // 商戶支付金鑰Key
        $this->wxpayConfig['notifyurl'] = ""; //非同步通知地址
        $this->wxpayConfig['returnurl'] = ""; //同步通知地址
        $this->wxpayConfig['url'] = "https://api.mch.weixin.qq.com/pay/unifiedorder";
    }
 
    public function index() {
    }
 
    /**
     *  支付
     */
    public function pay() {
        $orderid = "23324321234";//商戶訂單號
        $payprice = "0.01";//訂單金額
        if(empty($orderid) || empty($payprice)) {
            die('訂單引數不完整!');
        }

        $openid = $this->get_openid();
 
        // 設定統一支付介面引數
        // 設定必填引數
        // appid已填,商戶無需重複填寫
        // mch_id已填,商戶無需重複填寫
        // noncestr已填,商戶無需重複填寫
        // spbill_create_ip已填,商戶無需重複填寫
        // sign已填,商戶無需重複填寫
        $this->setParameter("openid", $openid);
        $this->setParameter("body", "購買商品");                          // 商品描述
        // 自定義訂單號,此處僅作舉例
        //$timeStamp = time();
        //$out_trade_no = \WxPayConf_pub::$APPID . $timeStamp;
        $out_trade_no = $orderid;
        //$out_trade_no = time();
        $this->setParameter("out_trade_no", $out_trade_no);                      // 商戶訂單號
        $this->setParameter("total_fee", $payprice * 100);                       // 總金額
        $this->setParameter("notify_url", $this->wxpayConfig['notifyurl']);       // 通知地址
        $this->setParameter("trade_type", "JSAPI");                              // 交易型別
        // 非必填引數,商戶可根據實際情況選填
        //$unifiedOrder->setParameter("sub_mch_id", "XXXX");                 // 子商戶號
        //$unifiedOrder->setParameter("device_info", "XXXX");                    // 裝置號
        //$unifiedOrder->setParameter("attach", "XXXX");                     // 附加資料
        //$unifiedOrder->setParameter("time_start", "XXXX");                 // 交易起始時間
        //$unifiedOrder->setParameter("time_expire", "XXXX");                    // 交易結束時間
        //$unifiedOrder->setParameter("goods_tag", "XXXX");                      // 商品標記
        //$unifiedOrder->setParameter("openid", "XXXX");                     // 使用者標識
        //$unifiedOrder->setParameter("product_id", "XXXX");                 // 商品ID
 
        $prepay_id = $this->getPrepayId();
        if(empty($prepay_id)) {
            die('引數出錯,請重試!');
        }
 
        $this->getParameters($prepay_id);
        $this->parameters;
        $returnurl = $this->wxpayConfig['returnurl'];
 
        $parameters = json_decode($this->parameters);
        $ptimeStamp = $parameters->timeStamp;
        $pnonceStr = $parameters->nonceStr;
        $ppackage = $parameters->package;
        $psignType = $parameters->signType;
        $ppaySign = $parameters->paySign;
        $signPackage = $this->getSignPackage();
 
        $button = <<<EOT
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>微信支付</title>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=0">
</head>
<body>
<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
<script>
wx.config({
        debug: false,
        appId: '{$signPackage["appId"]}',
        timestamp: {$signPackage["timestamp"]},
        nonceStr: '{$signPackage["nonceStr"]}',
        signature: '{$signPackage["signature"]}',
        jsApiList: ['chooseWXPay']
});
wx.ready(function () {
    wx.chooseWXPay({
        timestamp: {$ptimeStamp},
        nonceStr: '{$pnonceStr}',
        package: '{$ppackage}',
        signType: '{$psignType}',
        paySign: '{$ppaySign}',
        success: function (res) {
            //alert(JSON.stringify(res));
            window.location.href='{$returnurl}';
        }
    });
});
</script>
</body>
</html>
EOT;
        echo $button;
    }
 
    /**
     *  伺服器非同步通知頁面路徑
     */
    public function Paynotify() {
        /**
         * 通用通知介面demo
         * ====================================================
         * 支付完成後,微信會把相關支付和使用者資訊傳送到商戶設定的通知URL,
         * 商戶接收回調資訊後,根據需要設定相應的處理流程。
         *
         * 這裡舉例使用log檔案形式記錄回撥資訊。
         */
 
        // 儲存微信的回撥
        $xml = $GLOBALS['HTTP_RAW_POST_DATA'];
        $data = $this->xmlToArray($xml);
 
        // 驗證簽名,並回應微信。
        // 對後臺通知互動時,如果微信收到商戶的應答不是成功或超時,微信認為通知失敗,
        // 微信會通過一定的策略(如30分鐘共8次)定期重新發起通知
        // 儘可能提高通知的成功率,但微信不保證通知最終能成功。
        if($this->checkSign($data) == FALSE){
            $this->setReturnParameter("return_code", "FAIL");        // 返回狀態碼
            $this->setReturnParameter("return_msg", "簽名失敗"); // 返回資訊
        } else {
            $this->setReturnParameter("return_code", "SUCCESS"); // 設定返回碼
        }
        $returnXml = $this->returnXml();
        echo $returnXml;
 
        //==商戶根據實際情況設定相應的處理流程,此處僅作舉例=======
 
        // 以log檔案形式記錄回撥資訊
        // $log_ = new \Log_();
        // $log_name = THINK_PATH . "Library/Vendor/Wxpay/jssdk/notify_url.log";   // log檔案路徑
        // $log_->log_result($log_name, "【接收到的notify通知】:\n" . $xml . "\n");
 
        if($this->checkSign($data) == TRUE) {
            if ($data["return_code"] == "FAIL") {
                // 此處應該更新一下訂單狀態,商戶自行增刪操作
                die('【通訊出錯】'.$xml);
                // $log_->log_result($log_name, "【通訊出錯】:\n" . $xml . "\n");
            } elseif ($data["result_code"] == "FAIL"){
                // 此處應該更新一下訂單狀態,商戶自行增刪操作
                // $log_->log_result($log_name, "【業務出錯】:\n" . $xml . "\n");
                die('【業務出錯】'.$xml);
            } else {
                // 此處應該更新一下訂單狀態,商戶自行增刪操作
               
            }
 
            //商戶自行增加處理流程,
            //例如:更新訂單狀態
            //例如:資料庫操作
            //例如:推送支付完成資訊
        }
    }
    public function ReturnNotify() {
 
        /**
         * 通用通知介面demo
         * ====================================================
         * 支付完成後,微信會把相關支付和使用者資訊傳送到商戶設定的通知URL,
         * 商戶接收回調資訊後,根據需要設定相應的處理流程。
         *
         * 這裡舉例使用log檔案形式記錄回撥資訊。
         */
 
        // 儲存微信的回撥
        $xml = $GLOBALS['HTTP_RAW_POST_DATA'];
        $data = $this->xmlToArray($xml);
 
        // 驗證簽名,並回應微信。
        // 對後臺通知互動時,如果微信收到商戶的應答不是成功或超時,微信認為通知失敗,
        // 微信會通過一定的策略(如30分鐘共8次)定期重新發起通知
        // 儘可能提高通知的成功率,但微信不保證通知最終能成功。
        if($this->checkSign($data) == FALSE){
            $this->setReturnParameter("return_code", "FAIL");        // 返回狀態碼
            $this->setReturnParameter("return_msg", "簽名失敗"); // 返回資訊
        } else {
            $this->setReturnParameter("return_code", "SUCCESS"); // 設定返回碼
        }
        $returnXml = $this->returnXml();
        //echo $returnXml;
        //==商戶根據實際情況設定相應的處理流程,此處僅作舉例=======
 
        // 以log檔案形式記錄回撥資訊
        // $log_ = new \Log_();
        // $log_name = THINK_PATH . "Library/Vendor/Wxpay/jssdk/notify_url.log";   // log檔案路徑
        // $log_->log_result($log_name, "【接收到的notify通知】:\n" . $xml . "\n");
 
        if($this->checkSign($data) == TRUE) {
            if ($data["return_code"] == "FAIL") {
                // 此處應該更新一下訂單狀態,商戶自行增刪操作
                die('【通訊出錯】'.$xml);
                // $log_->log_result($log_name, "【通訊出錯】:\n" . $xml . "\n");
            } elseif ($data["result_code"] == "FAIL"){
                // 此處應該更新一下訂單狀態,商戶自行增刪操作
                // $log_->log_result($log_name, "【業務出錯】:\n" . $xml . "\n");
                die('【業務出錯】'.$xml);
            } else {
                // 此處應該更新一下訂單狀態,商戶自行增刪操作
                
            }
 
            //商戶自行增加處理流程,
            //例如:更新訂單狀態
            //例如:資料庫操作
            //例如:推送支付完成資訊
        }else $this->redirect('Mobile/Orders/orderNoReceive');
    }
    /**
     *  獲取openid
     */
    private function get_openid() {
        $openid = $_COOKIE['apiopenid'];
 
        if(empty($openid)) {
            // 通過code獲得openid
            if (!isset($_GET['code'])) {
                // 觸發微信返回code碼
                $url = $this->createOauthUrlForCode($this->get_url());
                Header("Location: " . $url);
            } else {
                // 獲取code碼,以獲取openid
                $code = $_GET['code'];
                $openid = $this->getOpenId($code);
                setcookie('apiopenid', $openid, time() + 86400);
            }
        }
        return $openid;
    }
 
    /**
     * 獲取當前頁面完整URL地址
     */
    private function get_url() {
        $sys_protocal = isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://';
        $php_self = $_SERVER['PHP_SELF'] ? $_SERVER['PHP_SELF'] : $_SERVER['SCRIPT_NAME'];
        $path_info = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';
        $relate_url = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : $php_self.(isset($_SERVER['QUERY_STRING']) ? '?' . $_SERVER['QUERY_STRING'] : $path_info);
        return $sys_protocal . (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '') . $relate_url;
    }
 
    /**
     *  作用:生成可以獲得code的url
     */
    private function createOauthUrlForCode($redirectUrl) {
        $urlObj["appid"] = $this->wxpayConfig['appid'];
        $urlObj["redirect_uri"] = "$redirectUrl";
        $urlObj["response_type"] = "code";
        $urlObj["scope"] = "snsapi_base";
        $urlObj["state"] = "STATE"."#wechat_redirect";
        $bizString = $this->formatBizQueryParaMap($urlObj, false);
        return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
    }
 
    /**
     *  作用:通過curl向微信提交code,以獲取openid
     */
    private function getOpenid($code) {
        $url = $this->createOauthUrlForOpenid($code);
        //初始化curl
        $ch = curl_init();
        //設定超時
        curl_setopt($ch, CURLOPT_TIMEOUT, $this->wxpayConfig['CURL_TIMEOUT']);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
        curl_setopt($ch, CURLOPT_HEADER, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        //執行curl,結果以jason形式返回
        $res = curl_exec($ch);
        curl_close($ch);
        //取出openid
        $data = json_decode($res,true);
        $this->openid = $data['openid'];
        return $this->openid;
    }
 
    /**
     *  作用:生成可以獲得openid的url
     */
    private function createOauthUrlForOpenid($code) {
        $urlObj["appid"] = $this->wxpayConfig['appid'];
        $urlObj["secret"] = $this->wxpayConfig['appsecret'];
        $urlObj["code"] = $code;
        $urlObj["grant_type"] = "authorization_code";
        $bizString = $this->formatBizQueryParaMap($urlObj, false);
        return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
    }
 
    /**
     *  作用:格式化引數,簽名過程需要使用
     */
    private function formatBizQueryParaMap($paraMap, $urlencode) {
        $buff = "";
        ksort($paraMap);
        foreach ($paraMap as $k => $v)
        {
            if($urlencode)
            {
                $v = urlencode($v);
            }
            //$buff .= strtolower($k) . "=" . $v . "&";
            $buff .= $k . "=" . $v . "&";
        }
        $reqPar = '';
        if (strlen($buff) > 0) {
            $reqPar = substr($buff, 0, strlen($buff)-1);
        }
        return $reqPar;
    }
 
    /**
     *  作用:設定請求引數
     */
    private function setParameter($parameter, $parameterValue) {
        $this->parameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
    }
 
    private function trimString($value) {
        $ret = null;
        if (null != $value) {
            $ret = $value;
            if (strlen($ret) == 0) {
                $ret = null;
            }
        }
        return $ret;
    }
 
    /**
     * 獲取prepay_id
     */
    private function getPrepayId() {
        $response = $this->postXml();
        $result = $this->xmlToArray($response);
        $prepay_id = $result["prepay_id"];
        return $prepay_id;
    }
 
    /**
     *  作用:post請求xml
     */
    private function postXml() {
        $xml = $this->createXml();
        $response = $this->postXmlCurl($xml,$this->wxpayConfig['url'],$this->wxpayConfig['CURL_TIMEOUT']);
        return $response;
    }
 
    /**
     * 生成介面引數xml
     */
    private function createXml() {
        try {
            // 檢測必填引數
            if($this->parameters["out_trade_no"] == null) {
                throw new \Exception("缺少統一支付介面必填引數out_trade_no!"."<br>");
            }elseif($this->parameters["body"] == null){
                throw new \Exception("缺少統一支付介面必填引數body!"."<br>");
            }elseif ($this->parameters["total_fee"] == null ) {
                throw new \Exception("缺少統一支付介面必填引數total_fee!"."<br>");
            }elseif ($this->parameters["notify_url"] == null) {
                throw new \Exception("缺少統一支付介面必填引數notify_url!"."<br>");
            }elseif ($this->parameters["trade_type"] == null) {
                throw new \Exception("缺少統一支付介面必填引數trade_type!"."<br>");
            }elseif ($this->parameters["trade_type"] == "JSAPI" &&
                    $this->parameters["openid"] == NULL){
                throw new \Exception("統一支付介面中,缺少必填引數openid!trade_type為JSAPI時,openid為必填引數!"."<br>");
            }
            $this->parameters["appid"] = $this->wxpayConfig['appid'];     // 公眾賬號ID
            $this->parameters["mch_id"] = $this->wxpayConfig['mchid'];        // 商戶號
            $this->parameters["spbill_create_ip"] = $_SERVER['REMOTE_ADDR'];// 終端ip
            $this->parameters["nonce_str"] = $this->createNoncestr();     // 隨機字串
            $this->parameters["sign"] = $this->getSign($this->parameters); // 簽名
            return  $this->arrayToXml($this->parameters);
        } catch (\Exception $e) {
            die($e->errorMessage());
        }
    }
 
    /**
     *  作用:產生隨機字串,不長於32位
     */
    private function createNoncestr( $length = 32 ) {
        $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
        $str = "";
        for ( $i = 0; $i < $length; $i++ )  {
            $str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
        }
        return $str;
    }
 
    /**
     *  作用:生成簽名
     */
    private function getSign($Obj) {
        foreach ($Obj as $k => $v) {
            $Parameters[$k] = $v;
        }
        //簽名步驟一:按字典序排序引數
        ksort($Parameters);
        $String = $this->formatBizQueryParaMap($Parameters, false);
        //echo '【string1】'.$String.'</br>';
        //簽名步驟二:在string後加入KEY
        $String = $String."&key=".$this->wxpayConfig['key'];
        //echo "【string2】".$String."</br>";
        //簽名步驟三:MD5加密
        $String = md5($String);
        //echo "【string3】 ".$String."</br>";
        //簽名步驟四:所有字元轉為大寫
        $result_ = strtoupper($String);
        //echo "【result】 ".$result_."</br>";
        return $result_;
    }
 
    /**
     *  作用:array轉xml
     */
    private function arrayToXml($arr) {
        $xml = "<xml>";
        foreach ($arr as $key=>$val) {
             if (is_numeric($val)) {
                $xml.="<".$key.">".$val."</".$key.">";
             } else {
                $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
             }
        }
        $xml.="</xml>";
        return $xml;
    }
 
    /**
     *  作用:以post方式提交xml到對應的介面url
     */
    private function postXmlCurl($xml,$url,$second = 30) {
        //初始化curl
        $ch = curl_init();
        //設定超時
        curl_setopt($ch, CURLOPT_TIMEOUT, $second);
        //這裡設定代理,如果有的話
        //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
        //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch,CURLOPT_URL, $url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
        //設定header
        curl_setopt($ch, CURLOPT_HEADER, FALSE);
        //要求結果為字串且輸出到螢幕上
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        //post提交方式
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
        //執行curl
        $data = curl_exec($ch);
        curl_close($ch);
        //返回結果
        if($data)
        {
            //curl_close($ch);
            return $data;
        }
        else
        {
            $error = curl_errno($ch);
            echo "curl出錯,錯誤碼:$error"."<br>";
            echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>錯誤原因查詢</a></br>";
            curl_close($ch);
            return false;
        }
    }
 
    /**
     *  作用:將xml轉為array
     */
    private function xmlToArray($xml) {
        //將XML轉為array
        $array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
        return $array_data;
    }
 
    /**
     *  作用:設定jsapi的引數
     */
    private function getParameters($prepay_id) {
        $jsApiObj["appId"] = $this->wxpayConfig['appid'];
        $timeStamp = time();
        $jsApiObj["timeStamp"] = "$timeStamp";
        $jsApiObj["nonceStr"] = $this->createNoncestr();
        $jsApiObj["package"] = "prepay_id=$prepay_id";
        $jsApiObj["signType"] = "MD5";
        $jsApiObj["paySign"] = $this->getSign($jsApiObj);
        $this->parameters = json_encode($jsApiObj);
    }
 
    private function checkSign($data) {
        $tmpData = $data;
        unset($tmpData['sign']);
        $sign = $this->getSign($tmpData);//本地簽名
        if ($data['sign'] == $sign) {
            return TRUE;
        }
        return FALSE;
    }
 
    /**
     * 設定返回微信的xml資料
     */
    private function setReturnParameter($parameter, $parameterValue) {
        $this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
    }
 
    /**
     * 將xml資料返回微信
     */
    private function returnXml() {
        $returnXml = $this->arrayToXml($this->returnParameters);
        return $returnXml;
    }
 
    /*----以下是JSSDK的檔案----*/
    private function getSignPackage() {
        $jsapiTicket = $this->getJsApiTicket();
 
        // 注意 URL 一定要動態獲取,不能 hardcode.
        $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
        $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
 
        $timestamp = time();
        $nonceStr = $this->createNonceStr2();
 
        // 這裡引數的順序要按照 key 值 ASCII 碼升序排序
        $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
 
        $signature = sha1($string);
 
        $signPackage = array(
                "appId"     => $this->wxpayConfig['appid'],
                "nonceStr"  => $nonceStr,
                "timestamp" => $timestamp,
                "url"       => $url,
                "signature" => $signature,
                "rawString" => $string
        );
        return $signPackage;
    }
 
    private function createNonceStr2($length = 16) {
        $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        $str = "";
        for ($i = 0; $i < $length; $i++) {
            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }
 
    private function getJsApiTicket() {
        // jsapi_ticket 應該全域性儲存與更新,以下程式碼以寫入到檔案中做示例
        // $data = json_decode(file_get_contents("jsapi_ticket.json"));
        $data = json_decode($_COOKIE['jsapi_ticket_json']);
        if ($data->expire_time < time()) {
            $accessToken = $this->getAccessToken();
            // 如果是企業號用以下 URL 獲取 ticket
            // $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
            $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
            $res = json_decode($this->httpGet($url));
            $ticket = $res->ticket;
            if ($ticket) {
                //$data->expire_time = time() + 7000;
                //$data->jsapi_ticket = $ticket;
                //$fp = fopen("jsapi_ticket.json", "w");
                //fwrite($fp, json_encode($data));
                //fclose($fp);
                $tempArr = array('jsapi_ticket' => $ticket, 'expire_time' => time() + 7000);
                setcookie('jsapi_ticket_json', json_encode($tempArr), $tempArr['expire_time']);
            }
        } else {
            $ticket = $data->jsapi_ticket;
        }
 
        return $ticket;
    }
 
    private function getAccessToken() {
        // access_token 應該全域性儲存與更新,以下程式碼以寫入到檔案中做示例
        // $data = json_decode(file_get_contents("access_token.json"));
        $data = json_decode($_COOKIE["access_token_json"]);
        if ($data->expire_time < time()) {
            // 如果是企業號用以下URL獲取access_token
            // $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . $this->wxpayConfig['appid'] . "&secret=" . $this->wxpayConfig['appsecret'];
            $res = json_decode($this->httpGet($url));
            $access_token = $res->access_token;
            if ($access_token) {
                //$data->expire_time = time() + 7000;
                //$data->access_token = $access_token;
                //$fp = fopen("access_token.json", "w");
                //fwrite($fp, json_encode($data));
                //fclose($fp);
                $tempArr = array('access_token' => $access_token, 'expire_time' => time() + 7000);
                setcookie('access_token_json', json_encode($tempArr), $tempArr['expire_time']);
            }
        } else {
            $access_token = $data->access_token;
        }
        return $access_token;
    }
 
    private function httpGet($url) {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_TIMEOUT, 500);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_URL, $url);
 
        $res = curl_exec($curl);
        curl_close($curl);
 
        return $res;;
    }
   
}