目录

• 微信退款
• • 申请退款
  • 对要发送到微信统一下单接口的数据进行签名
  • 排序并格式化
  • 数组转字符串方法
  • 需要使用证书的请求
  • XML数据转换为数组

微信退款

申请退款

public function getWeChatRefund(){$baseConfigModel = new \app\admin\model\Baseconfig();$app_id = $baseConfigModel->where(['name' => 'app_id'])->value('data');$mch_id = $baseConfigModel->where(['name' => 'mch_id'])->value('data');$payment_key = $baseConfigModel->where(['name' => 'payment_key'])->value('data');//通过微信api进行退款流程$out_trade_no = 'YS202307089954985798100';//原商户订单号$parma = array('appid'=> $app_id,  //APPID'mch_id'=> $mch_id, //商户id'nonce_str'=> $this->generate_password(30),//随机字符串'out_refund_no'=> $this->order_number('R'),//退款单号'out_trade_no'=> $out_trade_no,//原支付交易对应的商户订单号'total_fee'=> 1, //订单总金额'refund_fee'=> 1, //退款金额'op_user_id' => $mch_id, //商户id);$parma['sign'] = $this->getSign1($parma,$payment_key);$xmldata = $this->arrayToXml($parma);$xmlresult = $this->postXmlSSLCurl($xmldata,'https://api.mch.weixin.qq.com/secapi/pay/refund');$result = $this->FromXml($xmlresult);halt($result);return $result;}

对要发送到微信统一下单接口的数据进行签名

    protected function getSign1($Obj,$payment_key){foreach ($Obj as $k => $v){$Parameters[$k] = $v;}//签名步骤一：按字典序排序参数ksort($Parameters);$String = $this->formatBizQueryParaMap($Parameters, false);//签名步骤二：在string后加入KEY$String = $String."&key=".$payment_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_;}

排序并格式化

    protected 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;}

数组转字符串方法

protected 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;}

需要使用证书的请求

function postXmlSSLCurl($xml,$url,$second=30){$apiclient_cert = '../public/apiclient_cert';$payment_key = '../public/payment_key';$ch = curl_init();//超时时间curl_setopt($ch,CURLOPT_TIMEOUT,$second);//这里设置代理，如果有的话//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($ch,CURLOPT_SSL_VERIFYHOST,FALSE);//设置headercurl_setopt($ch,CURLOPT_HEADER,FALSE);//要求结果为字符串且输出到屏幕上curl_setopt($ch,CURLOPT_RETURNTRANSFER,TRUE);//设置证书//使用证书：cert 与 key 分别属于两个.pem文件//默认格式为PEM，可以注释curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');curl_setopt($ch,CURLOPT_SSLCERT, $apiclient_cert);//默认格式为PEM，可以注释curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');curl_setopt($ch,CURLOPT_SSLKEY, $payment_key);//post提交方式curl_setopt($ch,CURLOPT_POST, true);curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);$data = curl_exec($ch);//返回结果if($data){curl_close($ch);return $data;}else {$error = curl_errno($ch);echo "curl出错，错误码:$error"."
";curl_close($ch);return false;}}

XML数据转换为数组

public function FromXml($xml){if (!$xml) {echo "xml数据异常！";}//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;}

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