后端开发|php教程
php,阅读,付费
后端开发-php教程
关于php实现微信公众号文章付费阅读功能，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….
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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。
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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：
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readpay.php
GetOpenid();//获取openidif(!$openId) exit(获取openid失败);//②、统一下单$outTradeNo = uniqid();//你自己的商品订单号$payAmount = 0.01;//付款金额，单位:元$orderName = est; //订单标题$notifyUrl = ofity.php;//付款成功后的回调地址,一般放在本页面的同级目录即可$payTime = time();//付款时间$jsApiParameters = $wxPay->createJsBizPackage($openId,$payAmount,$outTradeNo,$orderName,$notifyUrl,$payTime);$jsApiParameters = json_encode($jsApiParameters);?>
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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？
mchid = $mchid; //https://pay. 产品中心-开发配置-商户号 $this->appid = $appid; //微信支付申请对应的公众号的APPID $this->appKey = $appKey; //微信支付申请对应的公众号的APP Key $this->apiKey = $key; //https://pay. 帐户设置-安全设置-API安全-API密钥-设置API密钥 } /*** 通过跳转获取用户的openid，跳转流程如下：* 1、设置自己需要调回的url及其其他参数，跳转到微信服务器https://open./connect/oauth2/authorize* 2、微信服务处理完成之后会跳转回用户redirect_uri地址，此时会带上一些参数，如：code* @return 用户的openid*/ public function GetOpenid() { //通过code获得openid if (!isset($_GET[code])){ //触发微信返回code码 $scheme = $_SERVER[HTTPS]==on ? https:// : http://; $baseUrl = urlencode($scheme.$_SERVER[HTTP_HOST].$_SERVER[PHP_SELF].$_SERVER[QUERY_STRING]); $url = $this->__CreateOauthUrlForCode($baseUrl); Header("Location: $url"); exit(); } else { //获取code码，以获取openid $code = $_GET[code]; $openid = $this->getOpenidFromMp($code); return $openid; } } /*** 通过code从工作平台获取openid机器access_token* @param string $code 微信跳转回来带上的code* @return openid*/ public function GetOpenidFromMp($code) { $url = $this->__CreateOauthUrlForOpenid($code); $res = self::curlGet($url); //取出openid $data = json_decode($res,true); $this->data = $data; $openid = $data[openid]; return $openid; } /*** 构造获取open和access_toke的url地址* @param string $code，微信跳转带回的code* @return 请求的url*/ private function __CreateOauthUrlForOpenid($code) { $urlObj["appid"] = $this->appid; $urlObj["secret"] = $this->appKey; $urlObj["code"] = $code; $urlObj["grant_type"] = "authorization_code"; $bizString = $this->ToUrlParams($urlObj); return "https://api./sns/oauth2/access_token?".$bizString; } /*** 构造获取code的url连接* @param string $redirectUrl 微信服务器回跳的url，需要url编码* @return 返回构造好的url*/ private function __CreateOauthUrlForCode($redirectUrl) { $urlObj["appid"] = $this->appid; $urlObj["redirect_uri"] = "$redirectUrl"; $urlObj["response_type"] = "code"; $urlObj["scope"] = "snsapi_base"; $urlObj["state"] = "STATE"."#wechat_redirect"; $bizString = $this->ToUrlParams($urlObj); return "https://open./connect/oauth2/authorize?".$bizString; } /*** 拼接签名字符串* @param array $urlObj* @return 返回已经拼接好的字符串*/ private function ToUrlParams($urlObj) { $buff = ""; foreach ($urlObj as $k => $v) { if($k != "sign") $buff .= $k . "=" . $v . "&"; } $buff = trim($buff, "&"); return $buff; } /*** 统一下单* @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* @param float $totalFee 收款总费用 单位元* @param string $outTradeNo 唯一的订单号* @param string $orderName 订单名称* @param string $notifyUrl 支付结果通知url 不要有问号* @param string $timestamp 支付时间* @return string*/ public function createJsBizPackage($openid, $totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp) { $config = array( mch_id => $this->mchid, appid => $this->appid, key => $this->apiKey, ); $orderName = iconv(GBK,UTF-8,$orderName); $unified = array( appid => $config[appid], 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 ody => $orderName, mch_id => $config[mch_id], once_str => self::createNonceStr(), otify_url => $notifyUrl, openid => $openid, //rade_type=JSAPI，此参数必传 out_trade_no => $outTradeNo, spbill_create_ip => 127.0.0.1, otal_fee => intval($totalFee * 100), //单位 转为分 rade_type => JSAPI, ); $unified[sign] = self::getSign($unified, $config[key]); $responseXml = self::curlPost(https://api.mch./pay/unifiedorder, self::arrayToXml($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); } $arr = array( "appId" => $config[appid], "timeStamp" => "$timestamp", //这里是字符串的时间戳，不是int，所以需加引号 "nonceStr" => self::createNonceStr(), "package" => "prepay_id=" . $unifiedOrder->prepay_id, "signType" => MD5, ); $arr[paySign] = self::getSign($arr, $config[key]); return $arr; } public static function curlGet($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, $options); } //https请求 不验证证书和host curl_setopt($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); //设置cURL允许执行的最长秒数 if (!empty($options)) { curl_setopt_array($ch, $options); } //https请求 不验证证书和host curl_setopt($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) { $xml = ""; foreach ($arr as $key => $val) { if (is_numeric($val)) {$xml .= "" . $val . ""; } else$xml .= "<![CDATA[" . $val . "]]>"; } $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 $reqPar; }}?>
nofity.php
notify();if($result){ //完成你的逻辑 //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;}else{ echo pay error;}class WxpayService{ protected $mchid; protected $appid; protected $apiKey; public function __construct($mchid, $appid, $key) { $this->mchid = $mchid; $this->appid = $appid; $this->apiKey = $key; } public function notify() { $config = array( mch_id => $this->mchid, appid => $this->appid, key => $this->apiKey, ); $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; $postObj = simplexml_load_string($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) { echo <![CDATA[SUCCESS]]><![CDATA[OK]]>; return $arr; } } /*** 获取签名*/ public static function getSign($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; }}
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。
PHP写微信公众号文章页采集方法_php实例
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