php实现微信jsapi支付(v2版本)

统一下单

        public function unifiedOrder($product_type = 1, $openid = '', $phone = '')    {        //订单总价        $total_fee = 79900;        if ($product_type == 1) {            $total_fee = 79900;        }        if ($product_type == 2) {            $total_fee = 99900;        }        //$total_fee = 1;        $data = array(            'appid' => config('mp.appid'),//参数            'body' => '商城',            'mch_id' => config('mp.mch_id'),//商户id            'nonce_str' => self::getRandChar(32), //随机字符串            'notify_url' => '', //回调地址            'out_trade_no' => $phone . '_' . time(), //订单号            'spbill_create_ip' => self::get_client_ip(),            'total_fee' => $total_fee,            'trade_type' => "JSAPI",            'openid' => $openid,        );        $url = "https://api.mch.weixin.qq.com/pay/unifiedorder";        $signkey = config('mp.key');        $data["sign"] = self::getSign($data, $signkey);        $xml = self::arrayToXml($data);        $response = self::postXmlCurl($xml, $url);        $ress = self::xmlstr_to_array($response);        if ($ress['return_code'] == 'FAIL') {            return array('code' => 0, 'message' => $ress['return_msg']);        }        if ($ress['result_code'] == 'FAIL') {            return array('code' => $ress['err_code'], 'message' => $ress['err_code_des']);        }        $datas = [            'appId' => config('mp.appid'),//参数            'timeStamp' => time() . '',            'nonceStr' => self::getRandChar(32),            'package' => "prepay_id=" . $ress['prepay_id'],            'signType' => "MD5",        ];        //生成签名        $datas['paySign'] = self::getSign($datas, $signkey);        $this->success('success', $datas);    }            private static function getRandChar($length)    {        $str = null;        $strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";        $max = strlen($strPol) - 1;        for ($i = 0; $i < $length; $i++) {            $str .= $strPol[rand(0, $max)]; // rand($min,$max)生成介于min和max两个数之间的一个随机整数        }        return $str;    }        private static function get_client_ip()    {        if (!empty($_SERVER['HTTP_CLIENT_IP'])) {            //ip from share internet            $ip = $_SERVER['HTTP_CLIENT_IP'];        } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {            //ip pass from proxy            $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];        } else {            $ip = $_SERVER['REMOTE_ADDR'];        }        return $ip;    }        private static function getSign($Obj, $api_key)    {        foreach ($Obj as $k => $v) {            //$Parameters[strtolower($k)] = $v;            $Parameters[$k] = $v;        }        ksort($Parameters);        //dump($Parameters);        $String = self::formatBizQueryParaMap($Parameters, false);        //dump($String);        $String = $String . "&key=" . $api_key;        //dump($String);        $result = strtoupper(md5($String));        return $result;    }        private static function formatBizQueryParaMap($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 $reqPar;    }        private static function arrayToXml($arr)    {        $xml = "";        foreach ($arr as $key => $val) {            if (is_numeric($val)) {                $xml .= "<" . $key . ">" . $val . " . $key . ">";            } else                $xml .= "<" . $key . "> . $val . "]]> . $key . ">";        }        $xml .= "";        return $xml;    }        private static function postXmlCurl($xml, $url, $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($ch, CURLOPT_SSL_VERIFYHOST, FALSE);        //设置 header        curl_setopt($ch, CURLOPT_HEADER, FALSE);        //要求结果为字符串且输出到屏幕上        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);        //post 提交方式        curl_setopt($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($ch);            echo "curl 出错，错误码:$error" . "
";        }    }        private static function xmlstr_to_array($xmlstr)    {        //禁止引用外部xml实体        libxml_disable_entity_loader(true);        $xmlstring = simplexml_load_string($xmlstr, 'SimpleXMLElement', LIBXML_NOCDATA);        $val = json_decode(json_encode($xmlstring), true);        return $val;    }

支付成功回调

        public function notify()    {        //获取返回的xml        $testxml = file_get_contents("php://input");        //将xml转化为json格式        $jsonxml = json_encode(simplexml_load_string($testxml, 'SimpleXMLElement', LIBXML_NOCDATA));        //转成数组        $result = json_decode($jsonxml, true);        file_log("mp_pay_notify_content.log", json_encode($result));        echo ' ';//业务逻辑    }

微信小程序端

uni.request({url: '后端下单地址',method: 'GET',data: {product_type: this.product_type,openid: this.openid,phone: this.phone},success: (cts) => {var result = cts.data.datalet that = thisuni.requestPayment({appId: result.appId, // 公众号名称，由商户传入timeStamp: result.timeStamp, // 时间戳，自1970年以来的秒数nonceStr: result.nonceStr, // 随机串package: result.package,signType: 'MD5', // 微信签名方式：paySign: result.paySign, // 微信签名success(res) {if (res.errMsg === 'requestPayment:ok') {//支付成功跳转uni.navigateTo({url: "/pages/index/order?phone=" + that.phone})}},fail(err) {console.log("支付失败", err)}})}});

来源地址：https://blog.csdn.net/qq_41526316/article/details/127652916