PHP实现微信退款功能
大家好,我是小编,最近在调微信退款接口,发现有许多坑,更大家分享一下
① 要是在测试的时候,网页提示 curl 58 说明 证书的路径出现问题(这里要填物理路径,也就是绝对路径)
②网页提示curl 52 说明你的证书引入少了,在官方的demo上只有两个证书 apiclient_cert.pem和 apiclient_key.pem 你还需要引入一个证书 rootca.pem,这个证书需要你登录到
你的商户平台上下载
3.要是网页提示 "HTTP/1.1 200 OK Server: nginx Date: Tue, 20 Jun 2017 08:08:01 GMT Content-Type: text/plain Content-Length: 852 Connection: keep-alive Keep-Alive: timeout=8
说明你的代码是没有问题的 ,应该是参数出错了 我之前错的地方是把 out_refund_no和 out_trade_no写的一样,微信官网上也是这样写的 ,但是就是出现问题,我把out_refund_no 修改了一下 发现可以了
注意:金额的单位是分
下面就是我写的接口
- function Home_index() {
 - date_default_timezone_set("Asia/Shanghai");
 - $date = date("YmdHis");
 - $appid = "";
 - $mch_id = "";
 - $out_trade_no = "14487658021497944120";
 - $op_user_id = "";
 - $out_refund_no = $date;
 - $total_fee = "500";
 - $refund_fee = "500";
 - // $transaction_id = "4009542001201706206596667604";
 - $key = "";
 - $nonce_str = nonceStr();
 - $ref = strtoupper(md5("app
 - . "&out_refund_no=$out_refund_no&out_trade_no=$out_trade_no&refund_fee=$refund_fee&total_fee=$total_fee"
 - . "&key=$key")); //sign加密MD5
 - $refund = array(
 - 'appid' =>$appid, //应用ID,固定
 - 'mch_id' => $mch_id, //商户号,固定
 - 'nonce_str' => $nonce_str, //随机字符串
 - 'op_user_id' => $op_user_id, //操作员
 - 'out_refund_no' => $out_refund_no, //商户内部唯一退款单号
 - 'out_trade_no' => $out_trade_no, //商户订单号,pay_sn码 1.1二选一,微信生成的订单号,在支付通知中有返回
 - // 'transaction_id'=>'1',//微信订单号 1.2二选一,商户侧传给微信的订单号
 - 'refund_fee' => $refund_fee, //退款金额
 - 'total_fee' => $total_fee, //总金额
 - 'sign' => $ref//签名
 - );
 - $url = "https://api.mch.weixin.qq.com/secapi/pay/refund";
 - ; //微信退款地址,post请求
 - $xml = arrayToXml($refund);
 - $ch = curl_init();
 - curl_setopt($ch, CURLOPT_URL, $url);
 - curl_setopt($ch, CURLOPT_HEADER, 1);
 - curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 - curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1); //证书检查
 - if ($useCert == true) {
 - // 设置证书
 - curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'pem');
 - curl_setopt($ch, CURLOPT_SSLCERT, dirname(__FILE__) . '/WxPay/cert/apiclient_cert.pem');
 - curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'pem');
 - curl_setopt($ch, CURLOPT_SSLKEY, dirname(__FILE__) . '/WxPay/cert/apiclient_key.pem');
 - curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'pem');
 - curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/WxPay/cert/rootca.pem');
 - }
 - curl_setopt($ch, CURLOPT_POST, 1);
 - curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
 - $xml = curl_exec($ch);
 - // 返回结果0的时候能只能表明程序是正常返回不一定说明退款成功而已
 - if ($xml) {
 - curl_close($ch);
 - // 把xml转化成数组
 - libxml_disable_entity_loader(true);
 - $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
 - // var_dump($xmlstring);
 - $result['errNum'] = 0;
 - $result['info'] = object_to_array($xmlstring);
 - // var_dump($result);
 - return $result;
 - } else {
 - $error = curl_errno($ch);
 - curl_close($ch);
 - // 错误的时候返回错误码。
 - $result['errNum'] = $error;
 - return $result;
 - }
 - }
 - function arrayToXml($arr) {
 - $xml = "<root>";
 - foreach ($arr as $key => $val) {
 - if (is_array($val)) {
 - $xml .= "<" . $key . ">" . arrayToXml($val) . "</" . $key . ">";
 - } else {
 - $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
 - }
 - }
 - $xml .= "</root>";
 - return $xml;
 - }
 - function object_to_array($obj) {
 - $obj = (array) $obj;
 - foreach ($obj as $k => $v) {
 - if (gettype($v) == 'resource') {
 - return;
 - }
 - if (gettype($v) == 'object' || gettype($v) == 'array') {
 - $obj[$k] = (array) object_to_array($v);
 - }
 - }
 - return $obj;
 - }
 - function nonceStr() {
 - $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
 - $str = "";
 - $length = 32;
 - for ($i = 0; $i < $length; $i++) {
 - $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
 - }
 - // 随机字符串
 - return $str;
 - }
 - Home_index();
 
赶快添加到你的项目中去吧。