一切盡在代碼中，代碼附有注釋，歡迎大家參考。
<?phpclass WxpayService{ protected $mchid; protected $appid; protected $key; public function __construct($mchid, $appid, $key) { $this->mchid = $mchid; // 微信支付商戶號 PartnerID 通過微信支付商戶資料審核后郵件發送 $this->appid = $appid; //公眾號APPID 通過微信支付商戶資料審核后郵件發送 $this->key = $key; //https://pay.weixin.qq.com 帳戶設置-安全設置-API安全-API密鑰-設置API密鑰 } /** * @param string $openid 調用【網頁授權獲取用戶信息】接口獲取到用戶在該公眾號下的Openid * @param float $totalFee 收款總費用 單位元 * @param string $outTradeNo 唯一的訂單號 * @param string $orderName 訂單名稱 * @param string $notifyUrl 支付結果通知url 不要有問號 * https://mp.weixin.qq.com/ 微信支付-開發配置-測試目錄 * 測試目錄 http://mp.izhanlue.com/paytest/ 最后需要斜線，(需要精確到二級或三級目錄) * @return string */ public function createJsBizPackage($openid, $totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp) { $config = array( 'mch_id' => $this->mchid, 'appid' => $this->appid, 'key' => $this->key, ); $unified = array( 'appid' => $config['appid'], 'attach' => '支付', //商家數據包，原樣返回 'body' => $orderName, 'mch_id' => $config['mch_id'], 'nonce_str' => self::createNonceStr(), 'notify_url' => $notifyUrl, 'openid' => $openid, //rade_type=JSAPI，此參數必傳 'out_trade_no' => $outTradeNo, 'spbill_create_ip' => '127.0.0.1', 'total_fee' => intval($totalFee * 100), //單位 轉為分 'trade_type' => 'JSAPI', ); $unified['sign'] = self::getSign($unified, $config['key']); $responseXml = self::curlPost('https://api.mch.weixin.qq.com/pay/unifiedorder', self::arrayToXml($unified)); /* <xml> <return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg> <appid><![CDATA[wx00e5904efec77699]]></appid> <mch_id><![CDATA[1220647301]]></mch_id> <nonce_str><![CDATA[1LHBROsdmqfXoWQR]]></nonce_str> <sign><![CDATA[ACA7BC8A9164D1FBED06C7DFC13EC839]]></sign> <result_code><![CDATA[SUCCESS]]></result_code> <prepay_id><![CDATA[wx2015032016590503f1bcd9c30421762652]]></prepay_id> <trade_type><![CDATA[JSAPI]]></trade_type> </xml> */ $unifiedOrder = simplexml_load_string($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($unifiedOrder->err_code); /* NOAUTH 商戶無此接口權限 NOTENOUGH 余額不足 ORDERPAID 商戶訂單已支付 ORDERCLOSED 訂單已關閉 SYSTEMERROR 系統錯誤 APPID_NOT_EXIST APPID不存在 MCHID_NOT_EXIST MCHID不存在 APPID_MCHID_NOT_MATCH appid和mch_id不匹配 LACK_PARAMS 缺少參數 OUT_TRADE_NO_USED 商戶訂單號重復 SIGNERROR 簽名錯誤 XML_FORMAT_ERROR XML格式錯誤 REQUIRE_POST_METHOD 請使用post方法 POST_DATA_EMPTY post數據為空 NOT_UTF8 編碼格式錯誤 */ } //$unifiedOrder->trade_type 交易類型 調用接口提交的交易類型，取值如下：JSAPI，NATIVE，APP //$unifiedOrder->prepay_id 預支付交易會話標識 微信生成的預支付回話標識，用于后續接口調用中使用，該值有效期為2小時 //$unifiedOrder->code_url 二維碼鏈接 trade_type為NATIVE是有返回，可將該參數值生成二維碼展示出來進行掃碼支付 $arr = array( "appId" => $config['appid'], "timeStamp" => $timestamp, "nonceStr" => self::createNonceStr(), "package" => "prepay_id=" . $unifiedOrder->prepay_id, "signType" => 'MD5', ); $arr['paySign'] = self::getSign($arr, $config['key']); return $arr; } public function notify() { $config = array( 'mch_id' => $this->mchid, 'appid' => $this->appid, 'key' => $this->key, ); $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; //error_log($postStr, 3, './str.txt'); /* $postStr = '<xml> <appid><![CDATA[wx00e5904efec77699]]></appid> <attach><![CDATA[支付測試]]></attach> <bank_type><![CDATA[CMB_CREDIT]]></bank_type> <cash_fee><![CDATA[1]]></cash_fee> <fee_type><![CDATA[CNY]]></fee_type> <is_subscribe><![CDATA[Y]]></is_subscribe> <mch_id><![CDATA[1220647301]]></mch_id> <nonce_str><![CDATA[a0tZ41phiHm8zfmO]]></nonce_str> <openid><![CDATA[oU3OCt5O46PumN7IE87WcoYZY9r0]]></openid> <out_trade_no><![CDATA[550bf2990c51f]]></out_trade_no> <result_code><![CDATA[SUCCESS]]></result_code> <return_code><![CDATA[SUCCESS]]></return_code> <sign><![CDATA[F6F519B4DD8DB978040F8C866C1E6250]]></sign> <time_end><![CDATA[20150320181606]]></time_end> <total_fee>1</total_fee> <trade_type><![CDATA[JSAPI]]></trade_type> <transaction_id><![CDATA[1008840847201503200034663980]]></transaction_id> </xml>'; */ $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA); if ($postObj === false) { die('parse xml error'); } if ($postObj->return_code != 'SUCCESS') { die($postObj->return_msg); } if ($postObj->result_code != 'SUCCESS') { die($postObj->err_code); } $arr = (array)$postObj; unset($arr['sign']); if (self::getSign($arr, $config['key']) == $postObj->sign) { // $mch_id = $postObj->mch_id; //微信支付分配的商戶號 // $appid = $postObj->appid; //微信分配的公眾賬號ID // $openid = $postObj->openid; //用戶在商戶appid下的唯一標識 // $transaction_id = $postObj->transaction_id;//微信支付訂單號 // $out_trade_no = $postObj->out_trade_no;//商戶訂單號 // $total_fee = $postObj->total_fee; //訂單總金額，單位為分 // $is_subscribe = $postObj->is_subscribe; //用戶是否關注公眾賬號，Y-關注，N-未關注，僅在公眾賬號類型支付有效 // $attach = $postObj->attach;//商家數據包，原樣返回 // $time_end = $postObj->time_end;//支付完成時間 echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>'; return $postObj; } } /** * curl get * * @param string $url * @param array $options * @return mixed */ public static function curlGet($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 $data; } public static function curlPost($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); //設置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); $data = curl_exec($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 $xml; } /** * 例如： * appid： wxd930ea5d5a258f4f * mch_id： 10000100 * device_info： 1000 * Body： test * nonce_str： ibuaiVcKdpRxkhJA * 第一步：對參數按照 key=value 的格式，并按照參數名 ASCII 字典序排序如下： * stringA="appid=wxd930ea5d5a258f4f&body=test&device_info=1000&mch_i * d=10000100&nonce_str=ibuaiVcKdpRxkhJA"; * 第二步：拼接支付密鑰： * stringSignTemp="stringA&key=192006250b4c09247ec02edce69f6a2d" * sign=MD5(stringSignTemp).toUpperCase()="9A0A8659F005D6984697E2CA0A9CF3B7" */ public static function getSign($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; }} 以上代碼大家都能看得懂吧，有哪里不明白的地方歡迎給我留言，我會在第一時間和大家取得聯系的。謝謝大家對腳本之家網站的支持。
