<?php
class JSSDK {
  private $appId;
  private $appSecret;

  public function __construct($appId, $appSecret) {
    $this->appId = $appId;
    $this->appSecret = $appSecret;
  }

  public function getSignPackage() {
    $jsapiTicket = $this->getJsApiTicket();
    $url = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
    $timestamp = time();
    $nonceStr = $this->createNonceStr();

    // 这里参数的顺序要按照 key 值 ASCII 码升序排序
    $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";

    $signature = sha1($string);

    $signPackage = array(
      "appId"     => $this->appId,
      "nonceStr"  => $nonceStr,
      "timestamp" => $timestamp,
      "url"       => $url,
      "signature" => $signature,
      "rawString" => $string
    );
    return $signPackage;
  }

  private 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;
  }

  private function getJsApiTicket() {
    // jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例
    $data = json_decode(file_get_contents("access_token.json"));
    if ($data->expire_time < time()) {
      $accessToken = $this->getAccessToken();
      $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
      $res = json_decode($this->httpGet($url));
      $ticket = $res->ticket;
      if ($ticket) {
        $data->expire_time = time() + 7000;
        $data->jsapi_ticket = $ticket;
        $fp = fopen("access_token.json", "w");
        fwrite($fp, json_encode($data));
        fclose($fp);
      }
    } else {
      $ticket = $data->jsapi_ticket;
    }

    return $ticket;
  }

  private function getAccessToken() {
    // access_token 应该全局存储与更新，以下代码以写入到文件中做示例
    $data = json_decode(file_get_contents("access_token.json"));
    if ($data->expire_time < time()) {
      $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
      $res = json_decode($this->httpGet($url));
      $access_token = $res->access_token;
      if ($access_token) {
        $data->expire_time = time() + 7000;
        $data->access_token = $access_token;
        $fp = fopen("access_token.json", "w");
        fwrite($fp, json_encode($data));
        fclose($fp);
      }
    } else {
      $access_token = $data->access_token;
    }
    return $access_token;
  }

  private function httpGet($url)
  {
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
    curl_setopt($curl, CURLOPT_URL, $url);

    $res = curl_exec($curl);
    curl_close($curl);

    return $res;
  }
}

上面是jssdk.php文件

在视图层是

wechat.php

<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <title>Home</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <link href="//cdn.bootcss.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet">
  </head>
  <?php
require_once "jssdk.php";
$jssdk = new JSSDK(APPID, APPSECRET);
$signPackage = $jssdk->GetSignPackage();
?>
  <script src="//cdn.bootcss.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
  <script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>

  <script>
  // 注意：所有的JS接口只能在公众号绑定的域名下调用，公众号开发者需要先登录微信公众平台进入“公众号设置”的“功能设置”里填写“JS接口安全域名”。
  // 如果发现在 Android 不能分享自定义内容，请到官网下载最新的包覆盖安装，Android 自定义分享接口需升级至 6.0.2.58 版本及以上。
  // 完整 JS-SDK 文档地址：http://mp.weixin.qq.com/wiki/7/aaa137b55fb2e0456bf8dd9148dd613f.html
  wx.config({
    appId: '<?php echo $signPackage["appId"];?>',
    timestamp: <?php echo $signPackage["timestamp"];?>,
    nonceStr: '<?php echo $signPackage["nonceStr"];?>',
    signature: '<?php echo $signPackage["signature"];?>',
    jsApiList: [
      // 所有要调用的 API 都要加到这个列表中
      'onMenuShareTimeline',//这里不知道你用的地理接口是哪个就两个都写上
      'onMenuShareAppMessage'
    ]
  });
  wx.ready(function () {
    // 在这里调用 API
    wx.onMenuShareTimeline({
                 title: 'Hello world', // 分享标题
                 link:"",
                 imgUrl: "" // 分享图标
             });
             // 获取“分享给朋友”按钮点击状态及自定义分享内容接口
             wx.onMenuShareAppMessage({
                 title: 'Hello world', // 分享标题
                 desc: "欢迎欢迎", // 分享描述
                 link:"",
                 imgUrl: "https://shenmi.diaochami.com/logo.png", // 分享图标
                 type: '' // 分享类型,music、video或link，不填默认为link
             });
  });
</script>
<body>

<div class="table-responsive">
  <table class="table">
    <thead>
      <tr>
        <th>编号</th>
        <th>问卷名称</th>
        <th>状态</th>
        <th>链接</th>
      </tr>
    </thead>
    <tbody>
      <?php foreach ($aData as $key => $value) { ?>
      <tr>
        <th scope="row"><?php echo $value['sid']; ?></th>
        <td><?php echo $value['surveyls_title']; ?></td>
        <td>已开启</td>
        <td><a href="#">开启调查</a></td>
      </tr>
      <?php } ?>
    </tbody>
  </table>
</div>
</body>
</html>

　　最后要注意的是微信端js安全域名的配置，域名一定要认证