微信退款v3

admin1个月前 (05-12)Laravel54

/**  * 微信 退款 操作  */ public function refund($out_trade_no, $refund_money)
{
    $time = time();
    $out_refund_no = $time . rand(1111, 9999);
    $refundData = [ 'out_trade_no' => $out_trade_no, 'out_refund_no' => $out_refund_no, 'reason' => '商品退款', 'funds_account' => 'AVAILABLE', 'amount' => [ 'refund' => $refund_money * 100, //退款标价金额，单位为分，可以做部分退款  'total' => $refund_money * 100, //订单总金额，单位为分  'currency' => 'CNY'  ],
    ];
    $url = 'https://api.mch.weixin.qq.com/v3/refund/domestic/refunds';
    $urlarr = parse_url($url); //拆解为：[scheme=>https,host=>api.mch.weixin.qq.com,path=>/v3/pay/transactions/native]  $mchid = $this->mch_id;//商户ID  $xlid = $this->xlid;//证书序列号  $refundData = json_encode($refundData);
    $nonce = $this->getNonceStr();
    $key = $this->getSign($refundData, $urlarr['path'], $nonce, $time);
    $token = sprintf('mchid="%s",serial_no="%s",nonce_str="%s",timestamp="%d",signature="%s"', $mchid, $xlid, $nonce, $time, $key);
    $header = array( 'Accept: application/json', 'Content-Type: application/json', 'Authorization: WECHATPAY2-SHA256-RSA2048 ' . $token
    );
    $res = $this->curl_post_https($url, $refundData, $header);
    $res_array = json_decode($res, true); if (isset($res_array['status']) && ($res_array['status'] == 'PROCESSING' || $res_array['status'] == 'SUCCESS') && isset($res_array['status'])) { return ['code' => 1, 'msg' => '退款成功'];
    } else { return ['code' => 0, 'msg' => $res_array['message']];
    }
} //获取随机字符串 public function getNonceStr()
{
    $strs = "QWERTYUIOPASDFGHJKLZXCVBNM1234567890";
    $name = substr(str_shuffle($strs), mt_rand(0, strlen($strs) - 11), 32); return $name;
} //微信支付签名 public function getSign($data = array(), $url, $randstr, $time)
{
    $str = "POST" . "\n" . $url . "\n" . $time . "\n" . $randstr . "\n" . $data . "\n";
    $key = file_get_contents(base_path() . '/public/cert/apiclient_key.pem');//在商户平台下载的秘钥,读取到变量  $str = $this->getSha256WithRSA($str, $key); return $str;
} //加密 public function getSha256WithRSA($content, $privateKey)
{
    $binary_signature = "";
    $algo = "SHA256"; openssl_sign($content, $binary_signature, $privateKey, $algo);
    $sign = base64_encode($binary_signature); return $sign;
} public function curl_post_https($url, $data, $header)
{ // 模拟提交数据函数  $curl = curl_init(); // 启动一个CURL会话  curl_setopt($curl, CURLOPT_URL, $url); // 要访问的地址  curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检查  curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0); // 从证书中检查SSL加密算法是否存在，如果出错则修改为0，默认为1  curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // 模拟用户使用的浏览器  curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转  curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // 自动设置Referer  curl_setopt($curl, CURLOPT_POST, 1); // 发送一个常规的Post请求  curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Post提交的数据包  curl_setopt($curl, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循环  curl_setopt($curl, CURLOPT_HEADER, 0); // 显示返回的Header区域内容  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // 获取的信息以文件流的形式返回  curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
    $tmpInfo = curl_exec($curl); // 执行操作  if (curl_errno($curl)) { echo 'Errno' . curl_error($curl);//捕抓异常  } curl_close($curl); // 关闭CURL会话  return $tmpInfo; // 返回数据，json格式 }