1. 程式人生 > >一個PHP檔案搞定微信支付系列之退款

一個PHP檔案搞定微信支付系列之退款

<?php /** * 關於微信退款的說明 * 1.微信退款要求必傳證書,需要到https://pay.weixin.qq.com 賬戶中心->賬戶設定->API安全->下載證書,證書路徑在第119行和122行修改 * 2.錯誤碼參照 :https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_4 */ header('Content-type:text/html; Charset=utf-8'); $mchid = 'xxxxx'; //微信支付商戶號 PartnerID 通過微信支付商戶資料稽核後郵件傳送 $appid
= 'xxxxx'; //微信支付申請對應的公眾號的APPID $apiKey = 'xxxxx'; //https://pay.weixin.qq.com 帳戶設定-安全設定-API安全-API金鑰-設定API金鑰 $orderNo = ''; //商戶訂單號(商戶訂單號與微信訂單號二選一,至少填一個) $wxOrderNo = ''; //微信訂單號(商戶訂單號與微信訂單號二選一,至少填一個) $totalFee = 0.01; //訂單金額,單位:元 $refundFee = 0.01; //退款金額,單位:元
$refundNo = 'refund_'.uniqid(); //退款訂單號(可隨機生成) $wxPay = new WxpayService($mchid,$appid,$apiKey); $result = $wxPay->doRefund($totalFee, $refundFee, $refundNo, $wxOrderNo,$orderNo); if($result===true){ echo 'refund success';exit(); } echo 'refund fail'; 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 產品中心-開發配置-商戶號 $this->appid = $appid; //微信支付申請對應的公眾號的APPID $this->apiKey = $key; //https://pay.weixin.qq.com 帳戶設定-安全設定-API安全-API金鑰-設定API金鑰 } /** * 退款 * @param float $totalFee 訂單金額 單位元 * @param float $refundFee 退款金額 單位元 * @param string $refundNo 退款單號 * @param string $wxOrderNo 微信訂單號 * @param string $orderNo 商戶訂單號 * @return string */ public function doRefund($totalFee, $refundFee, $refundNo, $wxOrderNo='',$orderNo='') { $config = array( 'mch_id' => $this->mchid, 'appid' => $this->appid, 'key' => $this->apiKey, ); $unified = array( 'appid' => $config['appid'], 'mch_id' => $config['mch_id'], 'nonce_str' => self::createNonceStr(), 'total_fee' => intval($totalFee * 100), //訂單金額 單位 轉為分 'refund_fee' => intval($refundFee * 100), //退款金額 單位 轉為分 'sign_type' => 'MD5', //簽名型別 支援HMAC-SHA256和MD5,預設為MD5 'transaction_id'=>$wxOrderNo, //微信訂單號 'out_trade_no'=>$orderNo, //商戶訂單號 'out_refund_no'=>$refundNo, //商戶退款單號 'refund_desc'=>'商品已售完', //退款原因(選填) ); $unified['sign'] = self::getSign($unified, $config['key']); $responseXml = $this->curlPost('https://api.mch.weixin.qq.com/secapi/pay/refund', self::arrayToXml($unified)); $unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA); if ($unifiedOrder === false) { die('parse xml error'); } if ($unifiedOrder->return_code != 'SUCCESS') { die($unifiedOrder->return_msg); } if ($unifiedOrder->result_code != 'SUCCESS') { die($unifiedOrder->err_code); } return true; } public static function curlGet($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, $options); } //https請求 不驗證證書和host curl_setopt($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 = '', $options = array()) { if (is_array($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); //設定cURL允許執行的最長秒數 if (!empty($options)) { curl_setopt_array($ch, $options); } //https請求 不驗證證書和host curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //第一種方法,cert 與 key 分別屬於兩個.pem檔案 //預設格式為PEM,可以註釋 curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM'); curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/cert/apiclient_cert.pem'); //預設格式為PEM,可以註釋 curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM'); curl_setopt($ch,CURLOPT_SSLKEY,getcwd().'/cert/apiclient_key.pem'); //第二種方式,兩個檔案合成一個.pem檔案 // curl_setopt($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; } } ?>