这篇文章主要介绍了PHP 微信支付类 demo的相关资料,需要的朋友可以参考下，一切尽在代码中，代码附有注释，欢迎大家参考。

1. <?php
2. class WxpayService
3. {
4. protected $mchid;
5. protected $appid;
6. protected $key;
7. public function __construct($mchid, $appid, $key)
8. {
9. $this->mchid = $mchid; // 微信支付商户号 PartnerID 通过微信支付商户资料审核后邮件发送
10. $this->appid = $appid; //公众号APPID 通过微信支付商户资料审核后邮件发送
11. $this->key = $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
12. }
13. /**
14. * @param string $openid 调用【网页授权获取用户信息】接口获取到用户在该公众号下的Openid
15. * @param float $totalFee 收款总费用 单位元
16. * @param string $outTradeNo 唯一的订单号
17. * @param string $orderName 订单名称
18. * @param string $notifyUrl 支付结果通知url 不要有问号
19. * https://mp.weixin.qq.com/ 微信支付-开发配置-测试目录
20. * 测试目录 http://mp.izhanlue.com/paytest/ 最后需要斜线，(需要精确到二级或三级目录)
21. * @return string
22. */
23. public function createJsBizPackage($openid, $totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp)
24. {
25. $config = array(
26. 'mch_id' => $this->mchid,
27. 'appid' => $this->appid,
28. 'key' => $this->key,
29. );
30. $unified = array(
31. 'appid' => $config['appid'],
32. 'attach' => '支付', //商家数据包，原样返回
33. 'body' => $orderName,
34. 'mch_id' => $config['mch_id'],
35. 'nonce_str' => self::createNonceStr(),
36. 'notify_url' => $notifyUrl,
37. 'openid' => $openid, //rade_type=JSAPI，此参数必传
38. 'out_trade_no' => $outTradeNo,
39. 'spbill_create_ip' => '127.0.0.1',
40. 'total_fee' => intval($totalFee * 100), //单位 转为分
41. 'trade_type' => 'JSAPI',
42. );
43. $unified['sign'] = self::getSign($unified, $config['key']);
44. $responseXml = self::curlPost('https://api.mch.weixin.qq.com/pay/unifiedorder', self::arrayToXml($unified));
45. /*
46. <xml>
47. <return_code><![CDATA[SUCCESS]]></return_code>
48. <return_msg><![CDATA[OK]]></return_msg>
49. <appid><![CDATA[wx00e5904efec77699]]></appid>
50. <mch_id><![CDATA[1220647301]]></mch_id>
51. <nonce_str><![CDATA[1LHBROsdmqfXoWQR]]></nonce_str>
52. <sign><![CDATA[ACA7BC8A9164D1FBED06C7DFC13EC839]]></sign>
53. <result_code><![CDATA[SUCCESS]]></result_code>
54. <prepay_id><![CDATA[wx2015032016590503f1bcd9c30421762652]]></prepay_id>
55. <trade_type><![CDATA[JSAPI]]></trade_type>
56. </xml>
57. */
58. $unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);
59. if ($unifiedOrder === false) {
60. die('parse xml error');
61. }
62. if ($unifiedOrder->return_code != 'SUCCESS') {
63. die($unifiedOrder->return_msg);
64. }
65. if ($unifiedOrder->result_code != 'SUCCESS') {
66. die($unifiedOrder->err_code);
67. /*
68. NOAUTH 商户无此接口权限
69. NOTENOUGH 余额不足
70. ORDERPAID 商户订单已支付
71. ORDERCLOSED 订单已关闭
72. SYSTEMERROR 系统错误
73. APPID_NOT_EXIST APPID不存在
74. MCHID_NOT_EXIST MCHID不存在
75. APPID_MCHID_NOT_MATCH appid和mch_id不匹配
76. LACK_PARAMS 缺少参数
77. OUT_TRADE_NO_USED 商户订单号重复
78. SIGNERROR 签名错误
79. XML_FORMAT_ERROR XML格式错误
80. REQUIRE_POST_METHOD 请使用post方法
81. POST_DATA_EMPTY post数据为空
82. NOT_UTF8 编码格式错误
83. */
84. }
85. //$unifiedOrder->trade_type 交易类型 调用接口提交的交易类型，取值如下：JSAPI，NATIVE，APP
86. //$unifiedOrder->prepay_id 预支付交易会话标识 微信生成的预支付回话标识，用于后续接口调用中使用，该值有效期为2小时
87. //$unifiedOrder->code_url 二维码链接 trade_type为NATIVE是有返回，可将该参数值生成二维码展示出来进行扫码支付
88. $arr = array(
89. "appId" => $config['appid'],
90. "timeStamp" => $timestamp,
91. "nonceStr" => self::createNonceStr(),
92. "package" => "prepay_id=" . $unifiedOrder->prepay_id,
93. "signType" => 'MD5',
94. );
95. $arr['paySign'] = self::getSign($arr, $config['key']);
96. return $arr;
97. }
98. public function notify()
99. {
100. $config = array(
101. 'mch_id' => $this->mchid,
102. 'appid' => $this->appid,
103. 'key' => $this->key,
104. );
105. $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
106. //error_log($postStr, 3, './str.txt');
107. /*
108. $postStr = '<xml>
109. <appid><![CDATA[wx00e5904efec77699]]></appid>
110. <attach><![CDATA[支付测试]]></attach>
111. <bank_type><![CDATA[CMB_CREDIT]]></bank_type>
112. <cash_fee><![CDATA[1]]></cash_fee>
113. <fee_type><![CDATA[CNY]]></fee_type>
114. <is_subscribe><![CDATA[Y]]></is_subscribe>
115. <mch_id><![CDATA[1220647301]]></mch_id>
116. <nonce_str><![CDATA[a0tZ41phiHm8zfmO]]></nonce_str>
117. <openid><![CDATA[oU3OCt5O46PumN7IE87WcoYZY9r0]]></openid>
118. <out_trade_no><![CDATA[550bf2990c51f]]></out_trade_no>
119. <result_code><![CDATA[SUCCESS]]></result_code>
120. <return_code><![CDATA[SUCCESS]]></return_code>
121. <sign><![CDATA[F6F519B4DD8DB978040F8C866C1E6250]]></sign>
122. <time_end><![CDATA[20150320181606]]></time_end>
123. <total_fee>1</total_fee>
124. <trade_type><![CDATA[JSAPI]]></trade_type>
125. <transaction_id><![CDATA[1008840847201503200034663980]]></transaction_id>
126. </xml>';
127. */
128. $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
129. if ($postObj === false) {
130. die('parse xml error');
131. }
132. if ($postObj->return_code != 'SUCCESS') {
133. die($postObj->return_msg);
134. }
135. if ($postObj->result_code != 'SUCCESS') {
136. die($postObj->err_code);
137. }
138. $arr = (array)$postObj;
139. unset($arr['sign']);
140. if (self::getSign($arr, $config['key']) == $postObj->sign) {
141. // $mch_id = $postObj->mch_id; //微信支付分配的商户号
142. // $appid = $postObj->appid; //微信分配的公众账号ID
143. // $openid = $postObj->openid; //用户在商户appid下的唯一标识
144. // $transaction_id = $postObj->transaction_id;//微信支付订单号
145. // $out_trade_no = $postObj->out_trade_no;//商户订单号
146. // $total_fee = $postObj->total_fee; //订单总金额，单位为分
147. // $is_subscribe = $postObj->is_subscribe; //用户是否关注公众账号，Y-关注，N-未关注，仅在公众账号类型支付有效
148. // $attach = $postObj->attach;//商家数据包，原样返回
149. // $time_end = $postObj->time_end;//支付完成时间
150. echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
151. return $postObj;
152. }
153. }
154. /**
155. * curl get
156. *
157. * @param string $url
158. * @param array $options
159. * @return mixed
160. */
161. public static function curlGet($url = '', $options = array())
162. {
163. $ch = curl_init($url);
164. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
165. curl_setopt($ch, CURLOPT_TIMEOUT, 30);
166. if (!emptyempty($options)) {
167. curl_setopt_array($ch, $options);
168. }
169. //https请求 不验证证书和host
170. curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
171. curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
172. $data = curl_exec($ch);
173. curl_close($ch);
174. return $data;
175. }
176. public static function curlPost($url = '', $postData = '', $options = array())
177. {
178. if (is_array($postData)) {
179. $postData = http_build_query($postData);
180. }
181. $ch = curl_init();
182. curl_setopt($ch, CURLOPT_URL, $url);
183. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
184. curl_setopt($ch, CURLOPT_POST, 1);
185. curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
186. curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
187. if (!emptyempty($options)) {
188. curl_setopt_array($ch, $options);
189. }
190. //https请求 不验证证书和host
191. curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
192. curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
193. $data = curl_exec($ch);
194. curl_close($ch);
195. return $data;
196. }
197. public static function createNonceStr($length = 16)
198. {
199. $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
200. $str = '';
201. for ($i = 0; $i < $length; $i++) {
202. $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
203. }
204. return $str;
205. }
206. public static function arrayToXml($arr)
207. {
208. $xml = "<xml>";
209. foreach ($arr as $key => $val) {
210. if (is_numeric($val)) {
211. $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
212. } else
213. $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
214. }
215. $xml .= "</xml>";
216. return $xml;
217. }
218. /**
219. * 例如：
220. * appid： wxd930ea5d5a258f4f
221. * mch_id： 10000100
222. * device_info： 1000
223. * Body： test
224. * nonce_str： ibuaiVcKdpRxkhJA
225. * 第一步：对参数按照 key=value 的格式，并按照参数名 ASCII 字典序排序如下：
226. * stringA="appid=wxd930ea5d5a258f4f&body=test&device_info=1000&mch_i
227. * d=10000100&nonce_str=ibuaiVcKdpRxkhJA";
228. * 第二步：拼接支付密钥：
229. * stringSignTemp="stringA&key=192006250b4c09247ec02edce69f6a2d"
230. * sign=MD5(stringSignTemp).toUpperCase()="9A0A8659F005D6984697E2CA0A9CF3B7"
231. */
232. public static function getSign($params, $key)
233. {
234. ksort($params, SORT_STRING);
235. $unSignParaString = self::formatQueryParaMap($params, false);
236. $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
237. return $signStr;
238. }
239. protected static function formatQueryParaMap($paraMap, $urlEncode = false)
240. {
241. $buff = "";
242. ksort($paraMap);
243. foreach ($paraMap as $k => $v) {
244. if (null != $v && "null" != $v) {
245. if ($urlEncode) {
246. $v = urlencode($v);
247. }
248. $buff .= $k . "=" . $v . "&";
249. }
250. }
251. $reqPar = '';
252. if (strlen($buff) > 0) {
253. $reqPar = substr($buff, 0, strlen($buff) - 1);
254. }
255. return $reqPar;
256. }
257. }

以上代码大家都能看得懂吧，有哪里不明白的地方欢迎给我留言，我会在第一时间和大家取得联系的。谢谢大家对脚本之家网站的支持。