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教你用PHP开发微信公众号文章付费阅读功能

时间:2021-07-01 10:21:17 帮助过:73人阅读

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php开发微信公众号文章付费阅读功能!

企业微信截图_15991965528075.png

如上图,一看就懂,就是一片公众号文章,点进去显示标题,作者,时间,公众号名称和部分内容,要想阅读所有内容,那就支付0.01元就可以阅读所有的内容,这就是付费阅读!!!当然金额可以自定义....

其实这个开发原理很简单,无非就是在文章页面加一个微信支付的按钮,点击支付后把隐藏的部分给显示出来或者直接跳转到全文地址。

当然了,这个文章界面也是模仿官方来写的,你可以查看官方的样式,然后模仿就可以了,这个没啥难度。主要是加个按钮在这个页面,下面是这个页面的代码:

readpay.php

  1. <?php
  2. header('Content-type:text/html; Charset=utf-8');
  3. $mchid = '微信支付商户号'; //微信支付商户号
  4. $appid = '微信支付申请对应的公众号的APPID'; //微信支付申请对应的公众号的APPID
  5. $appKey = '微信支付申请对应的公众号的APPSECRET'; //微信支付申请对应的公众号的APPSECRET
  6. $apiKey = 'API密钥'; //帐户设置-安全设置-API安全-API密钥-设置API密钥
  7. //①、获取用户openid
  8. $wxPay = new WxpayService($mchid,$appid,$appKey,$apiKey);
  9. $openId = $wxPay->GetOpenid(); //获取openid
  10. if(!$openId) exit('获取openid失败');
  11. //②、统一下单
  12. $outTradeNo = uniqid(); //你自己的商品订单号
  13. $payAmount = 0.01; //付款金额,单位:元
  14. $orderName = 'test'; //订单标题
  15. $notifyUrl = 'nofity.php'; //付款成功后的回调地址,一般放在本页面的同级目录即可
  16. $payTime = time(); //付款时间
  17. $jsApiParameters = $wxPay->createJsBizPackage($openId,$payAmount,$outTradeNo,$orderName,$notifyUrl,$payTime);
  18. $jsApiParameters = json_encode($jsApiParameters);
  19. ?>
  20. <!--下面就是木方官方微信文章页面-->
  21. <html>
  22. <head>
  23. <meta charset="utf-8">
  24. <meta name="viewport" content="width=device-width, initial-scale=1"/>
  25. <title>新版微信支持双开,王利芬庆祝“茅侃侃去世”文阅读10w+被批人血馒头</title>
  26. <script type="text/javascript">
  27. //调用微信JS api 支付
  28. function jsApiCall()
  29. {
  30. WeixinJSBridge.invoke(
  31. 'getBrandWCPayRequest',
  32. <?php echo $jsApiParameters; ?>,
  33. function(res){
  34. WeixinJSBridge.log(res.err_msg);
  35. //alert(res.err_code+res.err_desc+res.err_msg);
  36. if(res.err_msg == "get_brand_wcpay_request:ok"){
  37. //支付成功跳转页面
  38. window.location.href="这里填写支付成功后要跳转的查看全文文章地址";
  39. }else{
  40. //支付失败/或取消支付跳转页面,自己自定义开发页面
  41. window.location.href="false.html";
  42. }
  43. }
  44. );
  45. }
  46. function callpay()
  47. {
  48. if (typeof WeixinJSBridge == "undefined"){
  49. if( document.addEventListener ){
  50. document.addEventListener('WeixinJSBridgeReady', jsApiCall, false);
  51. }else if (document.attachEvent){
  52. document.attachEvent('WeixinJSBridgeReady', jsApiCall);
  53. document.attachEvent('onWeixinJSBridgeReady', jsApiCall);
  54. }
  55. }else{
  56. jsApiCall();
  57. }
  58. }
  59. </script>
  60. <!--下面就是木方官方微信文章页面的CSS-->
  61. <style>
  62. #title{
  63. margin-bottom:10px;
  64. line-height:1.4;
  65. font-weight:400;
  66. font-size:24px;
  67. width: 97%;
  68. margin:0 auto;
  69. }
  70. #meta_content .time{
  71. color: #8C8C8C;
  72. font-family: "SimHei";
  73. }
  74. .author{
  75. color: #8C8C8C;
  76. font-family: "SimHei";
  77. }
  78. .name{
  79. color: #607fa6;
  80. }
  81. #con{
  82. width:95%;
  83. font-size: 15px;
  84. margin:15px auto 25px;
  85. color: #595757;
  86. }
  87. </style>
  88. </head>
  89. <body>
  90. <br/>
  91. <!--文章标题-->
  92. <h2 id="title">新版微信支持双开,王利芬庆祝“茅侃侃去世”文阅读10w+被批人血馒头</h2>
  93. <div id="meta_content">
  94. <!--发布时间、作者、公众号昵称-->
  95. <span class="time">2018-01-27</span> <span class="author">tanking</span> <span class="name">里客云</span>
  96. </div>
  97. <!--显示的部分内容,未支付前显示的内容-->
  98. <div id="con">
  99. 这一周,公众号议论最多的有“周冲的影像声色”因洗稿被撕、80后创业者茅侃侃去世、刘亦菲分手......几乎每件事都能在朋友圈刷到相关报道。此外,视频大号“一条”又拿到了新一轮融资,你最关心哪一件事呢?
  100. </div>
  101. <!--支付按钮-->
  102. <div align="center">
  103. <button style="width:180px; height:35px;background: none; border-radius: 5px;border:1px #1AAD19 solid; cursor: pointer; color:#1AAD19; font-size:15px;-webkit-tap-highlight-color:rgba(255,0,0,0);" type="button" οnclick="callpay()" >支付0.01阅读全文</button>
  104. </div>
  105. </body>
  106. </html>
  107. <!--下面是微信支付逻辑了-->
  108. <?php
  109. header("Content-Type:text/html; charset=utf-8");
  110. class WxpayService
  111. {
  112. protected $mchid;
  113. protected $appid;
  114. protected $appKey;
  115. protected $apiKey;
  116. public $data = null;
  117. public function __construct($mchid, $appid, $appKey,$key)
  118. {
  119. $this->mchid = $mchid; //https://pay.weixin.qq.com 产品中心-开发配置-商户号
  120. $this->appid = $appid; //微信支付申请对应的公众号的APPID
  121. $this->appKey = $appKey; //微信支付申请对应的公众号的APP Key
  122. $this->apiKey = $key; //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥
  123. }
  124. /**
  125. * 通过跳转获取用户的openid,跳转流程如下:
  126. * 1、设置自己需要调回的url及其其他参数,跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize
  127. * 2、微信服务处理完成之后会跳转回用户redirect_uri地址,此时会带上一些参数,如:code
  128. * @return 用户的openid
  129. */
  130. public function GetOpenid()
  131. {
  132. //通过code获得openid
  133. if (!isset($_GET['code'])){
  134. //触发微信返回code码
  135. $scheme = $_SERVER['HTTPS']=='on' ? 'https://' : 'http://';
  136. $baseUrl = urlencode($scheme.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].$_SERVER['QUERY_STRING']);
  137. $url = $this->__CreateOauthUrlForCode($baseUrl);
  138. Header("Location: $url");
  139. exit();
  140. } else {
  141. //获取code码,以获取openid
  142. $code = $_GET['code'];
  143. $openid = $this->getOpenidFromMp($code);
  144. return $openid;
  145. }
  146. }
  147. /**
  148. * 通过code从工作平台获取openid机器access_token
  149. * @param string $code 微信跳转回来带上的code
  150. * @return openid
  151. */
  152. public function GetOpenidFromMp($code)
  153. {
  154. $url = $this->__CreateOauthUrlForOpenid($code);
  155. $res = self::curlGet($url);
  156. //取出openid
  157. $data = json_decode($res,true);
  158. $this->data = $data;
  159. $openid = $data['openid'];
  160. return $openid;
  161. }
  162. /**
  163. * 构造获取open和access_toke的url地址
  164. * @param string $code,微信跳转带回的code
  165. * @return 请求的url
  166. */
  167. private function __CreateOauthUrlForOpenid($code)
  168. {
  169. $urlObj["appid"] = $this->appid;
  170. $urlObj["secret"] = $this->appKey;
  171. $urlObj["code"] = $code;
  172. $urlObj["grant_type"] = "authorization_code";
  173. $bizString = $this->ToUrlParams($urlObj);
  174. return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
  175. }
  176. /**
  177. * 构造获取code的url连接
  178. * @param string $redirectUrl 微信服务器回跳的url,需要url编码
  179. * @return 返回构造好的url
  180. */
  181. private function __CreateOauthUrlForCode($redirectUrl)
  182. {
  183. $urlObj["appid"] = $this->appid;
  184. $urlObj["redirect_uri"] = "$redirectUrl";
  185. $urlObj["response_type"] = "code";
  186. $urlObj["scope"] = "snsapi_base";
  187. $urlObj["state"] = "STATE"."#wechat_redirect";
  188. $bizString = $this->ToUrlParams($urlObj);
  189. return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
  190. }
  191. /**
  192. * 拼接签名字符串
  193. * @param array $urlObj
  194. * @return 返回已经拼接好的字符串
  195. */
  196. private function ToUrlParams($urlObj)
  197. {
  198. $buff = "";
  199. foreach ($urlObj as $k => $v)
  200. {
  201. if($k != "sign") $buff .= $k . "=" . $v . "&";
  202. }
  203. $buff = trim($buff, "&");
  204. return $buff;
  205. }
  206. /**
  207. * 统一下单
  208. * @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
  209. * @param float $totalFee 收款总费用 单位元
  210. * @param string $outTradeNo 唯一的订单号
  211. * @param string $orderName 订单名称
  212. * @param string $notifyUrl 支付结果通知url 不要有问号
  213. * @param string $timestamp 支付时间
  214. * @return string
  215. */
  216. public function createJsBizPackage($openid, $totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp)
  217. {
  218. $config = array(
  219. 'mch_id' => $this->mchid,
  220. 'appid' => $this->appid,
  221. 'key' => $this->apiKey,
  222. );
  223. $orderName = iconv('GBK','UTF-8',$orderName);
  224. $unified = array(
  225. 'appid' => $config['appid'],
  226. 'attach' => 'pay', //商家数据包,原样返回,如果填写中文,请注意转换为utf-8
  227. 'body' => $orderName,
  228. 'mch_id' => $config['mch_id'],
  229. 'nonce_str' => self::createNonceStr(),
  230. 'notify_url' => $notifyUrl,
  231. 'openid' => $openid, //rade_type=JSAPI,此参数必传
  232. 'out_trade_no' => $outTradeNo,
  233. 'spbill_create_ip' => '127.0.0.1',
  234. 'total_fee' => intval($totalFee * 100), //单位 转为分
  235. 'trade_type' => 'JSAPI',
  236. );
  237. $unified['sign'] = self::getSign($unified, $config['key']);
  238. $responseXml = self::curlPost('https://api.mch.weixin.qq.com/pay/unifiedorder', self::arrayToXml($unified));
  239. $unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);
  240. if ($unifiedOrder === false) {
  241. die('parse xml error');
  242. }
  243. if ($unifiedOrder->return_code != 'SUCCESS') {
  244. die($unifiedOrder->return_msg);
  245. }
  246. if ($unifiedOrder->result_code != 'SUCCESS') {
  247. die($unifiedOrder->err_code);
  248. }
  249. $arr = array(
  250. "appId" => $config['appid'],
  251. "timeStamp" => "$timestamp", //这里是字符串的时间戳,不是int,所以需加引号
  252. "nonceStr" => self::createNonceStr(),
  253. "package" => "prepay_id=" . $unifiedOrder->prepay_id,
  254. "signType" => 'MD5',
  255. );
  256. $arr['paySign'] = self::getSign($arr, $config['key']);
  257. return $arr;
  258. }
  259. public static function curlGet($url = '', $options = array())
  260. {
  261. $ch = curl_init($url);
  262. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  263. curl_setopt($ch, CURLOPT_TIMEOUT, 30);
  264. if (!empty($options)) {
  265. curl_setopt_array($ch, $options);
  266. }
  267. //https请求 不验证证书和host
  268. curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
  269. curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
  270. $data = curl_exec($ch);
  271. curl_close($ch);
  272. return $data;
  273. }
  274. public static function curlPost($url = '', $postData = '', $options = array())
  275. {
  276. if (is_array($postData)) {
  277. $postData = http_build_query($postData);
  278. }
  279. $ch = curl_init();
  280. curl_setopt($ch, CURLOPT_URL, $url);
  281. curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  282. curl_setopt($ch, CURLOPT_POST, 1);
  283. curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
  284. curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
  285. if (!empty($options)) {
  286. curl_setopt_array($ch, $options);
  287. }
  288. //https请求 不验证证书和host
  289. curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
  290. curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
  291. $data = curl_exec($ch);
  292. curl_close($ch);
  293. return $data;
  294. }
  295. public static function createNonceStr($length = 16)
  296. {
  297. $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
  298. $str = '';
  299. for ($i = 0; $i < $length; $i++) {
  300. $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
  301. }
  302. return $str;
  303. }
  304. public static function arrayToXml($arr)
  305. {
  306. $xml = "<xml>";
  307. foreach ($arr as $key => $val) {
  308. if (is_numeric($val)) {
  309. $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
  310. } else
  311. $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
  312. }
  313. $xml .= "</xml>";
  314. return $xml;
  315. }
  316. public static function getSign($params, $key)
  317. {
  318. ksort($params, SORT_STRING);
  319. $unSignParaString = self::formatQueryParaMap($params, false);
  320. $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
  321. return $signStr;
  322. }
  323. protected static function formatQueryParaMap($paraMap, $urlEncode = false)
  324. {
  325. $buff = "";
  326. ksort($paraMap);
  327. foreach ($paraMap as $k => $v) {
  328. if (null != $v && "null" != $v) {
  329. if ($urlEncode) {
  330. $v = urlencode($v);
  331. }
  332. $buff .= $k . "=" . $v . "&";
  333. }
  334. }
  335. $reqPar = '';
  336. if (strlen($buff) > 0) {
  337. $reqPar = substr($buff, 0, strlen($buff) - 1);
  338. }
  339. return $reqPar;
  340. }
  341. }
  342. ?>

nofity.php

  1. <?php
  2. /**
  3. * 原生支付(扫码支付)及公众号支付的异步回调通知
  4. * 说明:需要在native.php或者jsapi.php中的填写回调地址。例如:http://www.xxx.com/wx/notify.php
  5. * 付款成功后,微信服务器会将付款结果通知到该页面
  6. */
  7. header('Content-type:text/html; Charset=utf-8');
  8. $mchid = '微信支付商户号';
  9. $appid = '公众号APPID';
  10. $apiKey = 'API密钥';
  11. $wxPay = new WxpayService($mchid,$appid,$apiKey);
  12. $result = $wxPay->notify();
  13. if($result){
  14. //完成你的逻辑
  15. //例如连接数据库,获取付款金额$result['cash_fee'],获取订单号$result['out_trade_no'],修改数据库中的订单状态等;
  16. }else{
  17. echo 'pay error';
  18. }
  19. class WxpayService
  20. {
  21. protected $mchid;
  22. protected $appid;
  23. protected $apiKey;
  24. public function __construct($mchid, $appid, $key)
  25. {
  26. $this->mchid = $mchid;
  27. $this->appid = $appid;
  28. $this->apiKey = $key;
  29. }
  30. public function notify()
  31. {
  32. $config = array(
  33. 'mch_id' => $this->mchid,
  34. 'appid' => $this->appid,
  35. 'key' => $this->apiKey,
  36. );
  37. $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
  38. $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
  39. if ($postObj === false) {
  40. die('parse xml error');
  41. }
  42. if ($postObj->return_code != 'SUCCESS') {
  43. die($postObj->return_msg);
  44. }
  45. if ($postObj->result_code != 'SUCCESS') {
  46. die($postObj->err_code);
  47. }
  48. $arr = (array)$postObj;
  49. unset($arr['sign']);
  50. if (self::getSign($arr, $config['key']) == $postObj->sign) {
  51. echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
  52. return $arr;
  53. }
  54. }
  55. /**
  56. * 获取签名
  57. */
  58. public static function getSign($params, $key)
  59. {
  60. ksort($params, SORT_STRING);
  61. $unSignParaString = self::formatQueryParaMap($params, false);
  62. $signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
  63. return $signStr;
  64. }
  65. protected static function formatQueryParaMap($paraMap, $urlEncode = false)
  66. {
  67. $buff = "";
  68. ksort($paraMap);
  69. foreach ($paraMap as $k => $v) {
  70. if (null != $v && "null" != $v) {
  71. if ($urlEncode) {
  72. $v = urlencode($v);
  73. }
  74. $buff .= $k . "=" . $v . "&";
  75. }
  76. }
  77. $reqPar = '';
  78. if (strlen($buff) > 0) {
  79. $reqPar = substr($buff, 0, strlen($buff) - 1);
  80. }
  81. return $reqPar;
  82. }
  83. }

简单说明:

1、新建readpay.php,拷贝上面的代码,修改商户号、appid、appsecret、密钥即可,还有下面的回调地址的路径(nofity.php),至于支付成功和支付失败跳转的页面按自己的需求修改即可。

支付金额、文章标题】时间、作者、公账号名称等根据自己的需求修改。

要注意,订单标题不能为中文,否则会提示body参数错误什么的。

2、新建nofity.php

把上面的代码拷贝上去,修改商户号、appid、密钥即可。

上传到支付授权目录,然后访问readpay.php页面测试。

3、新建false.html,这个是支付失败的页面,至于支付失败要显示什么或者输出什么,这个根据你的业务来自定义开发。

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