userAppid = $payConfig['wechat']['miniapp_id'];
$this->skillAppid = $serviceConfig['skillappid'];
$this->shopAppid = $serviceConfig['shopappid'];
$this->mch_id = $payConfig['wechat']['mch_id'];
$this->key = $payConfig['wechat']['key'];
$this->cert_client = $payConfig['wechat']['cert_client'];
$this->cert_key = $payConfig['wechat']['cert_key'];
}
public function wxRefund($order){
//通过微信api进行退款流程
$params = array(
'mch_id'=>$this->mch_id,
'nonce_str'=>$this->createNoncestr(),
'out_refund_no'=>$order['out_trade_no'],
'transaction_id'=>$order['transaction_id'],
'total_fee'=> intval($order['order_price']*100),
'refund_fee'=> intval($order['refund_price']*100),
);
$params['appid'] = $this->userAppid;
$params['sign'] = $this->getSign($params);
$xmldata = $this->arrayToXml($params);
$xmlresult = $this->postXmlSSLCurl($xmldata,$this->reqUrl);
$result = $this->xmlToArray($xmlresult);
return $result['return_code'];
}
/*
* 对要发送到微信统一下单接口的数据进行签名
*/
protected function getSign($Obj){
foreach ($Obj as $k => $v){
$param[$k] = $v;
}
//签名步骤一：按字典序排序参数
ksort($param);
$String = $this->formatBizQueryParaMap($param, false);
//签名步骤二：在string后加入KEY
$wx_key=$this->key; //申请支付后有给予一个商户账号和密码，登陆后自己设置的key
$String = $String."&key=".$wx_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);
// var_dump($result_);
return $result_;
}
/*
*排序并格式化参数方法，签名时需要使用
*/
protected function formatBizQueryParaMap($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 $reqPar;
}
/*
* 生成随机字符串方法
*/
protected function createNoncestr($length = 32 ){
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ) {
$str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
//数组转字符串方法
protected function arrayToXml($arr){
$xml = "";
foreach ($arr as $key=>$val)
{
if (is_numeric($val)){
$xml.="<".$key.">".$val."";
}else{
$xml.="<".$key.">";
}
}
$xml.="";
return $xml;
}
//将xml字符串转换为数组
protected static function xmlToArray($xml){
$array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $array_data;
}
//需要使用证书的请求
//发送xml请求方法
protected function postXmlSSLCurl($xml, $url, $second = 30)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_TIMEOUT, $second);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM');
curl_setopt($ch, CURLOPT_SSLCERT, ROOT_PATH.$this->cert_client);
curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
curl_setopt($ch, CURLOPT_SSLKEY, ROOT_PATH.$this->cert_key);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
$data = curl_exec($ch);
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;
}
}
}