<?php
/**
* 关于微信退款的说明
* 1.微信退款要求必传证书，需要到https://pay.weixin.qq.com 账户中心->账户设置->API安全->下载证书，证书路径在第119行和122行修改
* 2.错误码参照 ：https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_4
*/
use think\Db;
class WxpayService
{
protected $mchid;
protected $appid;
protected $apiKey;
public $data = null;
public function __construct($mchid, $appid, $key)
{
$this->mchid = $mchid; //https://pay.weixin.qq.com 产品中心-开发配置-商户号
$this->appid = $appid; //微信支付申请对应的公众号的APPID
$this->apiKey = $key; //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥
}
/**
* 退款
* @param float $totalFee 订单金额 单位元
* @param float $refundFee 退款金额 单位元
* @param string $refundNo 退款单号
* @param string $wxOrderNo 微信订单号
* @param string $orderNo 商户订单号
* @return string
*/
public function doRefund($totalFee, $refundFee, $refundNo, $wxOrderNo='',$orderNo='',$id,$certpem,$keypem)
{
$config = array(
'mch_id' => $this->mchid,
'appid' => $this->appid,
'key' => $this->apiKey,
);
$unified = array(
'appid' => $config['appid'],
'mch_id' => $config['mch_id'],
'nonce_str' => self::createNonceStr(),
'total_fee' => ($totalFee * 100), //订单金额 单位 转为分
'refund_fee' => ($refundFee * 100), //退款金额 单位 转为分
'sign_type' => 'MD5', //签名类型 支持HMAC-SHA256和MD5，默认为MD5
'transaction_id'=>$wxOrderNo, //微信订单号
'out_trade_no'=>$orderNo, //商户订单号
'out_refund_no'=>$refundNo, //商户退款单号
'refund_desc'=>'客户主动退款', //退款原因（选填）
);
$unified['sign'] = self::getSign($unified, $config['key']);
// var_dump($unified);die;
$responseXml = self::curlPost('https://api.mch.weixin.qq.com/secapi/pay/refund', self::arrayToXml($unified),array(),$certpem,$keypem);
$unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);
// var_dump($unifiedOrder);die;
//dump($certpem);die;
// if ($unifiedOrder == false) {
// die('parse xml error');
// }
if ($unifiedOrder->result_code == 'SUCCESS') {
echo "退款成功";
$upres= Db::name('wxpayorder')->where("id=".$id)->update( ['status'=>4,'refund_time'=>time()] );
$upress= Db::name('wxbilling')->where("orderid=".$id)->update( ['istuikuan'=>1,'tuikuantime'=>time()] );
}else{
echo "退款错误：".$unifiedOrder->return_msg ;
// echo "退款错误：".$unifiedOrder->err_code_des ;
if($unifiedOrder->err_code_des == "订单已全额退款"){
$upres= Db::name('wxpayorder')->where("id=".$id)->update( ['status'=>4] );
$upress= Db::name('wxbilling')->where("orderid=".$id)->update( ['istuikuan'=>1] );
}
}
}
public static function curlGet($url = '', $options = array())
{
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
if (!empty($options)) {
curl_setopt_array($ch, $options);
}
//https请求 不验证证书和host
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
public function curlPost($url = '', $postData = '', $options = array(),$certpem,$keypem)
{
if (is_array($postData)) {
$postData = http_build_query($postData);
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
if (!empty($options)) {
curl_setopt_array($ch, $options);
}
//https请求 不验证证书和host
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
//第一种方法，cert 与 key 分别属于两个.pem文件
//默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLCERT,$_SERVER['DOCUMENT_ROOT'].$certpem);
//默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLKEY,$_SERVER['DOCUMENT_ROOT'].$keypem);
//第二种方式，两个文件合成一个.pem文件
// curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/all.pem');
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
public static function createNonceStr($length = 16)
{
$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
$str = '';
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
public static function arrayToXml($arr)
{
$xml = "<xml>";
foreach ($arr as $key => $val) {
if (is_numeric($val)) {
$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
} else
$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
}
$xml .= "</xml>";
return $xml;
}
public static function getSign($params, $key)
{
ksort($params, SORT_STRING);
$unSignParaString = self::formatQueryParaMap($params, false);
$signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
return $signStr;
}
protected static function formatQueryParaMap($paraMap, $urlEncode = false)
{
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v) {
if (null != $v && "null" != $v) {
if ($urlEncode) {
$v = urlencode($v);
}
$buff .= $k . "=" . $v . "&";
}
}
$reqPar = '';
if (strlen($buff) > 0) {
$reqPar = substr($buff, 0, strlen($buff) - 1);
}
return $reqPar;
}
}
?>
