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dedemaodedemao
authoredMay 25, 2018
退款
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‎refund.php

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<?php
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/**
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* alipay.trade.refund(统一收单交易退款接口)
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*
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* 当交易发生之后一段时间内，由于买家或者卖家的原因需要退款时，卖家可以通过退款接口将支付款退还给买家，支付宝将在收到退款请求并且验证成功之后，按照退款规则将支付款按原路退到买家帐号上。
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*/
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header('Content-type:text/html; Charset=utf-8');
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/*** 请填写以下配置信息 ***/
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$appid = 'xxxxx'; //https://open.alipay.com 账户中心->密钥管理->开放平台密钥，填写添加了电脑网站支付的应用的APPID
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$tradeNo = ''; //在支付宝系统中的交易流水号。最短 16 位，最长 64 位。和out_trade_no不能同时为空
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$outTradeNo = ''; //订单支付时传入的商户订单号,和支付宝交易号不能同时为空。
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$signType = 'RSA2'; //签名算法类型，支持RSA2和RSA，推荐使用RSA2
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$refundAmount = 0.01; ////需要退款的金额，该金额不能大于订单金额,单位为元，支持两位小数
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//商户私钥，填写对应签名算法类型的私钥，如何生成密钥参考：https://docs.open.alipay.com/291/105971和https://docs.open.alipay.com/200/105310
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$rsaPrivateKey='';
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/*** 配置结束 ***/
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$aliPay = new AlipayService();
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$aliPay->setAppid($appid);
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$aliPay->setRsaPrivateKey($rsaPrivateKey);
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$aliPay->setTradeNo($tradeNo);
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$aliPay->setOutTradeNo($outTradeNo);
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$aliPay->setRefundAmount($refundAmount);
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$result = $aliPay->doRefund();
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$result = $result['alipay_trade_refund_response'];
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if($result['code'] && $result['code']=='10000'){
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echo '<h1>退款成功</h1>';
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}else{
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echo $result['msg'].' : '.$result['sub_msg'];
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}
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class AlipayService
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{
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protected $appId;
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protected $returnUrl;
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protected $notifyUrl;
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protected $charset;
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//私钥值
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protected $rsaPrivateKey;
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protected $outTradeNo;
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protected $tradeNo;
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protected $refundAmount;
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public function __construct()
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{
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$this->charset = 'utf8';
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}
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public function setAppid($appid)
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{
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$this->appId = $appid;
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}
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public function setRsaPrivateKey($saPrivateKey)
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{
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$this->rsaPrivateKey = $saPrivateKey;
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}
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public function setOutTradeNo($outTradeNo)
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{
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$this->outTradeNo = $outTradeNo;
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}
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public function settradeNo($tradeNo)
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{
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$this->tradeNo = $tradeNo;
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}
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public function setRefundAmount($refundAmount)
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{
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$this->refundAmount = $refundAmount;
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}
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/**
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* 退款
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* @return array
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*/
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public function doRefund()
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{
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//请求参数
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$requestConfigs = array(
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'trade_no'=>$this->tradeNo,
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'out_trade_no'=>$this->outTradeNo,
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'refund_amount'=>$this->refundAmount,
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);
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$commonConfigs = array(
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//公共参数
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'app_id' => $this->appId,
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'method' => 'alipay.trade.refund', //接口名称
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'format' => 'JSON',
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'charset'=>$this->charset,
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'sign_type'=>'RSA2',
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'timestamp'=>date('Y-m-d H:i:s'),
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'version'=>'1.0',
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'biz_content'=>json_encode($requestConfigs),
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);
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$commonConfigs["sign"] = $this->generateSign($commonConfigs, $commonConfigs['sign_type']);
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$result = $this->curlPost('https://openapi.alipay.com/gateway.do',$commonConfigs);
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$resultArr = json_decode($result,true);
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if(empty($resultArr)){
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$result = iconv('GBK','UTF-8//IGNORE',$result);
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return json_decode($result,true);
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}
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return $resultArr;
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}
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public function generateSign($params, $signType = "RSA") {
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return $this->sign($this->getSignContent($params), $signType);
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}
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protected function sign($data, $signType = "RSA") {
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$priKey=$this->rsaPrivateKey;
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$res = "-----BEGIN RSA PRIVATE KEY-----\n" .
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wordwrap($priKey, 64, "\n", true) .
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"\n-----END RSA PRIVATE KEY-----";
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($res) or die('您使用的私钥格式错误，请检查RSA私钥配置');
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if ("RSA2" == $signType) {
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openssl_sign($data, $sign, $res, version_compare(PHP_VERSION,'5.4.0', '<') ? SHA256 : OPENSSL_ALGO_SHA256); //OPENSSL_ALGO_SHA256是php5.4.8以上版本才支持
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} else {
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openssl_sign($data, $sign, $res);
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}
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$sign = base64_encode($sign);
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return $sign;
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}
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/**
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* 校验$value是否非空
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* if not set ,return true;
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* if is null , return true;
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**/
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protected function checkEmpty($value) {
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if (!isset($value))
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return true;
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if ($value === null)
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return true;
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if (trim($value) === "")
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return true;
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return false;
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}
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public function getSignContent($params) {
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ksort($params);
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$stringToBeSigned = "";
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$i = 0;
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foreach ($params as $k => $v) {
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if (false === $this->checkEmpty($v) && "@" != substr($v, 0, 1)) {
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// 转换成目标字符集
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$v = $this->characet($v, $this->charset);
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if ($i == 0) {
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$stringToBeSigned .= "$k" . "=" . "$v";
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} else {
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$stringToBeSigned .= "&" . "$k" . "=" . "$v";
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}
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$i++;
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}
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}
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unset ($k, $v);
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return $stringToBeSigned;
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}
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/**
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* 转换字符集编码
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* @param $data
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* @param $targetCharset
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* @return string
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*/
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function characet($data, $targetCharset) {
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if (!empty($data)) {
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$fileType = $this->charset;
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if (strcasecmp($fileType, $targetCharset) != 0) {
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$data = mb_convert_encoding($data, $targetCharset, $fileType);
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//$data = iconv($fileType, $targetCharset.'//IGNORE', $data);
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}
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}
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return $data;
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}
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public function curlPost($url = '', $postData = '', $options = array())
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{
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if (is_array($postData)) {
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$postData = http_build_query($postData);
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}
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$ch = curl_init();
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($ch, CURLOPT_POST, 1);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
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curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
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if (!empty($options)) {
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curl_setopt_array($ch, $options);
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}
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//https请求 不验证证书和host
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
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$data = curl_exec($ch);
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curl_close($ch);
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return $data;
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}
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}

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