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php實現微信公眾號文章付費閱讀功能的程式碼分享

小云云
小云云原創
2018-03-08 09:42:113160瀏覽

關於php實現微信公眾號文章付費閱讀功能,就是一片公眾號文章,點進去顯示標題,作者,時間,公眾號名稱和部分內容,要想閱讀所有內容,那就支付0.01元就可以閱讀所有的內容,這就是付費閱讀! ! !當然金額可以自訂....

其實這個開發原理很簡單,無非就是在文章頁面加一個微信支付的按鈕,點擊支付後把隱藏的部分給顯示出來或直接跳到全文位址。

當然了,這個文章介面也是模仿官方來寫的,你可以查看官方的樣式,然後模仿就可以了,這個沒啥難度。主要是加個按鈕在這個頁面,下面是這個頁面的程式碼:

readpay.php

<?php
header(&#39;Content-type:text/html; Charset=utf-8&#39;);
$mchid = &#39;微信支付商户号&#39;;          //微信支付商户号
$appid = &#39;微信支付申请对应的公众号的APPID&#39;;  //微信支付申请对应的公众号的APPID
$appKey = &#39;微信支付申请对应的公众号的APPSECRET&#39;;   //微信支付申请对应的公众号的APPSECRET
$apiKey = &#39;API密钥&#39;;   //帐户设置-安全设置-API安全-API密钥-设置API密钥
//①、获取用户openid
$wxPay = new WxpayService($mchid,$appid,$appKey,$apiKey);
$openId = $wxPay->GetOpenid();      //获取openid
if(!$openId) exit(&#39;获取openid失败&#39;);
//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 = &#39;test&#39;;    //订单标题
$notifyUrl = &#39;nofity.php&#39;;     //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);
?>

    <!--下面就是木方官方微信文章页面-->
    <html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1"/>
        <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>
        <script type="text/javascript">
            //调用微信JS api 支付
            function jsApiCall()
            {
                WeixinJSBridge.invoke(
                    &#39;getBrandWCPayRequest&#39;,
                    <?php echo $jsApiParameters; ?>,
                    function(res){
                        WeixinJSBridge.log(res.err_msg);
                        //alert(res.err_code+res.err_desc+res.err_msg);
                        if(res.err_msg == "get_brand_wcpay_request:ok"){
                            //支付成功跳转页面
                            window.location.href="这里填写支付成功后要跳转的查看全文文章地址";
                        }else{
                            //支付失败/或取消支付跳转页面,自己自定义开发页面
                            window.location.href="false.html";
                        }
                    }
                );
            }
            function callpay()
            {
                if (typeof WeixinJSBridge == "undefined"){
                    if( document.addEventListener ){
                        document.addEventListener(&#39;WeixinJSBridgeReady&#39;, jsApiCall, false);
                    }else if (document.attachEvent){
                        document.attachEvent(&#39;WeixinJSBridgeReady&#39;, jsApiCall);
                        document.attachEvent(&#39;onWeixinJSBridgeReady&#39;, jsApiCall);
                    }
                }else{
                    jsApiCall();
                }
            }
        </script>
        <!--下面就是木方官方微信文章页面的CSS-->
        <style>
            #title{
                   margin-bottom:10px;
                   line-height:1.4;
                   font-weight:400;
                   font-size:24px;
                   width: 97%;
                   margin:0 auto;
            }
            
            #meta_content .time{
                color: #8C8C8C;
                font-family: "SimHei";
            }

            .author{
                color: #8C8C8C;
                font-family: "SimHei";
            }

            .name{
                color: #607fa6;
            }

            #con{
                width:95%;
                font-size: 15px;
                margin:15px auto 25px;
                color: #595757;
            }
        </style>
    </head>
    <body>
    <br/>
    <!--文章标题-->
    <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>
    <p id="meta_content">
    <!--发布时间、作者、公众号昵称-->
       <span class="time">2018-01-27</span>   <span class="author">tanking</span>   <span class="name">里客云</span>
    </p>
    <!--显示的部分内容,未支付前显示的内容-->
    <p id="con">
        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?
    </p>
    <!--支付按钮-->
    <p align="center">
        <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" onclick="callpay()" >支付0.01阅读全文</button>
    </p>
    </body>
    </html>

    <!--下面是微信支付逻辑了-->
<?php
header("Content-Type:text/html; charset=utf-8");
class WxpayService
{
    protected $mchid;
    protected $appid;
    protected $appKey;
    protected $apiKey;
    public $data = null;
    public function __construct($mchid, $appid, $appKey,$key)
    {
        $this->mchid = $mchid; //https://pay.weixin.qq.com 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 = $key;   //https://pay.weixin.qq.com 帐户设置-安全设置-API安全-API密钥-设置API密钥
    }
    /**
     * 通过跳转获取用户的openid,跳转流程如下:
     * 1、设置自己需要调回的url及其其他参数,跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize
     * 2、微信服务处理完成之后会跳转回用户redirect_uri地址,此时会带上一些参数,如:code
     * @return 用户的openid
     */
    public function GetOpenid()
    {
        //通过code获得openid
        if (!isset($_GET[&#39;code&#39;])){
            //触发微信返回code码
            $scheme = $_SERVER[&#39;HTTPS&#39;]==&#39;on&#39; ? &#39;https://&#39; : &#39;http://&#39;;
            $baseUrl = urlencode($scheme.$_SERVER[&#39;HTTP_HOST&#39;].$_SERVER[&#39;PHP_SELF&#39;].$_SERVER[&#39;QUERY_STRING&#39;]);
            $url = $this->__CreateOauthUrlForCode($baseUrl);
            Header("Location: $url");
            exit();
        } else {
            //获取code码,以获取openid
            $code = $_GET[&#39;code&#39;];
            $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[&#39;openid&#39;];
        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.weixin.qq.com/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.weixin.qq.com/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(
            &#39;mch_id&#39; => $this->mchid,
            &#39;appid&#39; => $this->appid,
            &#39;key&#39; => $this->apiKey,
        );
        $orderName = iconv(&#39;GBK&#39;,&#39;UTF-8&#39;,$orderName);
        $unified = array(
            &#39;appid&#39; => $config[&#39;appid&#39;],
            &#39;attach&#39; => &#39;pay&#39;,             //商家数据包,原样返回,如果填写中文,请注意转换为utf-8
            &#39;body&#39; => $orderName,
            &#39;mch_id&#39; => $config[&#39;mch_id&#39;],
            &#39;nonce_str&#39; => self::createNonceStr(),
            &#39;notify_url&#39; => $notifyUrl,
            &#39;openid&#39; => $openid,            //rade_type=JSAPI,此参数必传
            &#39;out_trade_no&#39; => $outTradeNo,
            &#39;spbill_create_ip&#39; => &#39;127.0.0.1&#39;,
            &#39;total_fee&#39; => intval($totalFee * 100),       //单位 转为分
            &#39;trade_type&#39; => &#39;JSAPI&#39;,
        );
        $unified[&#39;sign&#39;] = self::getSign($unified, $config[&#39;key&#39;]);
        $responseXml = self::curlPost(&#39;https://api.mch.weixin.qq.com/pay/unifiedorder&#39;, self::arrayToXml($unified));
        $unifiedOrder = simplexml_load_string($responseXml, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);
        if ($unifiedOrder === false) {
            die(&#39;parse xml error&#39;);
        }
        if ($unifiedOrder->return_code != &#39;SUCCESS&#39;) {
            die($unifiedOrder->return_msg);
        }
        if ($unifiedOrder->result_code != &#39;SUCCESS&#39;) {
            die($unifiedOrder->err_code);
        }
        $arr = array(
            "appId" => $config[&#39;appid&#39;],
            "timeStamp" => "$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" => &#39;MD5&#39;,
        );
        $arr[&#39;paySign&#39;] = self::getSign($arr, $config[&#39;key&#39;]);
        return $arr;
    }
    public static function curlGet($url = &#39;&#39;, $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 = &#39;&#39;, $postData = &#39;&#39;, $options = array())
    {
        if (is_array($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 = &#39;abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&#39;;
        $str = &#39;&#39;;
        for ($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 . "&";
            }
        }
        $reqPar = &#39;&#39;;
        if (strlen($buff) > 0) {
            $reqPar = substr($buff, 0, strlen($buff) - 1);
        }
        return $reqPar;
    }
}
?>

nofity.php

<?php
/**
 * 原生支付(扫码支付)及公众号支付的异步回调通知
 * 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
 * 付款成功后,微信服务器会将付款结果通知到该页面
 */
header(&#39;Content-type:text/html; Charset=utf-8&#39;);
$mchid = &#39;微信支付商户号&#39;;
$appid = &#39;公众号APPID&#39;; 
$apiKey = &#39;API密钥&#39;; 
$wxPay = new WxpayService($mchid,$appid,$apiKey);
$result = $wxPay->notify();
if($result){
    //完成你的逻辑
    //例如连接数据库,获取付款金额$result[&#39;cash_fee&#39;],获取订单号$result[&#39;out_trade_no&#39;],修改数据库中的订单状态等;
}else{
    echo &#39;pay error&#39;;
}
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(
            &#39;mch_id&#39; => $this->mchid,
            &#39;appid&#39; => $this->appid,
            &#39;key&#39; => $this->apiKey,
        );
        $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
        $postObj = simplexml_load_string($postStr, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA);
        if ($postObj === false) {
            die(&#39;parse xml error&#39;);
        }
        if ($postObj->return_code != &#39;SUCCESS&#39;) {
            die($postObj->return_msg);
        }
        if ($postObj->result_code != &#39;SUCCESS&#39;) {
            die($postObj->err_code);
        }
        $arr = (array)$postObj;
        unset($arr[&#39;sign&#39;]);
        if (self::getSign($arr, $config[&#39;key&#39;]) == $postObj->sign) {
            echo &#39;<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>&#39;;
            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 . "&";
            }
        }
        $reqPar = &#39;&#39;;
        if (strlen($buff) > 0) {
            $reqPar = substr($buff, 0, strlen($buff) - 1);
        }
        return $reqPar;
    }
}

簡單說明:
1】新建readpay.php,拷貝上面的程式碼,修改商家號碼、appid、appsecret、金鑰即可,還有下面的回呼位址的路徑(nofity.php),至於支付成功和支付失敗跳轉的頁面依自己的需求修改即可。
支付金額、文章標題】時間、作者、公帳號名稱等依自己的需求修改。
要注意,訂單標題不能為中文,否則會提示body參數錯誤什麼的。
2】新建nofity.php
把上面的程式碼拷貝上去,修改商家號碼、appid、金鑰即可。
上傳到付款授權目錄,然後存取readpay.php頁面測試。
3】新建false.html,這個是支付失敗的頁面,至於支付失敗要顯示什麼或輸出什麼,這個根據你的業務來自訂開發。

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