Share the WeChat public account to realize the function of receiving membership cards

 //调用js-sdk的签名包
 public function getSignPackage() {
 $jsapiTicket = $this->getJsApiTicket();
 // 注意 URL 一定要动态获取，不能 hardcode.（获取当前网页的url）
 $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
 $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
 //时间戳
 $timestamp = time();
 //随机字符串获取
 $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";
 //生成字符串是用来签名用的
 $signature = sha1($string);
 $signPackage = array(
  "appId"  => $this->appid,
  "nonceStr" => $nonceStr,
  "timestamp" => $timestamp,
  "url"  => $url,
  "signature" => $signature,
  "rawString" => $string
 );
 return $signPackage; 
 }

//使用会员卡领取的签名包
 public function getHuiYuanSignPackage() {
 $apiTicket = $this->getApiTicket();
 // 注意 URL 一定要动态获取，不能 hardcode.（获取当前网页的url）
 $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
 $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
 //时间戳
 $timestamp = time();
 //随机字符串获取
 // $nonceStr = $this->createNonceStr();
 // 这里参数的顺序要按照 key 值 ASCII 码升序排序
 $string = $timestamp.$apiTicket."pVYA_t3RCVF_yhNcO6QCeAmb-1UI";
 //生成字符串是用来签名用的
 $signature = sha1($string);
 $signPackage = array(
  "timestamp" => $timestamp,
  "signature" => $signature,
 );
 return $signPackage; 
 }

  //引入微信js文件
   <script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
<script type="text/JavaScript">
//配置信息验证接口（填写的js-sdk获取的签名包的参数）
wx.config({
 debug: false,
 appId: &#39;<?PHP echo $signPackage["appId"];?>&#39;,
 timestamp: &#39;<?php echo $signPackage["timestamp"];?>&#39;,
 nonceStr: &#39;<?php echo $signPackage["nonceStr"];?>&#39;,
 signature: &#39;<?php echo $signPackage["signature"];?>&#39;,
 jsApiList: [
  // 所有要调用的 API 都要加到这个列表中
  &#39;addCard&#39;
  ]
   });
wx.ready(function(){
        //添加卡券
    document.querySelector(&#39;#addCard&#39;).onclick = function () {
     wx.addCard({
      cardList: [
      {
       cardId: "",//微信公众号内创建的会员卡的id
       cardExt: &#39;{"timestamp":"<?php echo $huiyuanPackage[&#39;timestamp&#39;] ?>","signature":"<?php echo $huiyuanPackage[&#39;signature&#39;] ?>"}&#39;//会员卡的签名包
      }
      ],
     //成功之后的回调的函数(通过回调函数该表数据库是否领取会员卡的状态)
      success: function (res) {
      $.ajax({
      url: &#39;__CONTROLLER__/editHuiYuan&#39;,
      type: &#39;post&#39;,
      dataType: &#39;json&#39;,
      data: {is_LingQu: &#39;1&#39;,user_id:"<?php echo $user[&#39;user_id&#39;] ?>"},
      success:function(){
      $("#addCard").html("我的会员卡");
      }
      })
      }
     });
    };
   });
</script>

 public function index(){
 $user_id = session('user_id');
  if($user_id){
  $jssdk = new \Home\Model\WechatModel();
  $signPackage = $jssdk->GetSignPackage();//获取js-sdk签名包
  $huiyuanPackage = $jssdk->getHuiYuanSignPackage();获取会员卡签名包
  //获取用户信息 
  $user = M('user')->where(array('user_id' => $user_id))->find();
  //产品收藏数量统计
  $goods_count = M('goods_shoucang')->where(array('user_id' => $user_id))->count();
  //门店收藏数量统计
  $shop_count = M('shop_shoucang')->where(array('user_id' => $user_id))->count();
  }else{
  //判断该用户是否存在
  $model = new \Home\Model\WechatModel();
  $openid_accesstoken = $model->openId();
  $rst = M('user')->where(array('user_openid' => $openid_accesstoken['openid']))->find();
  if($rst){
   session('openid',$openid_accesstoken['openid']);
   session('user_id', $rst['user_id']);
   $jssdk = new \Home\Model\WechatModel();
   $signPackage = $jssdk->GetSignPackage();
   $huiyuanPackage = $jssdk->getHuiYuanSignPackage();
   //获取用户信息 
   $user = M('user')->where(array('user_id' => $rst['user_id']))->find();
   //产品收藏数量统计
   $goods_count = M('goods_shoucang')->where(array('user_id' => $rst['user_id']))->count();
   //门店收藏数量统计
   $shop_count = M('shop_shoucang')->where(array('user_id' => $rst['user_id']))->count();
  }else{
   $userInfo = $model->getOpenId($openid_accesstoken['openid'],$openid_accesstoken['access_token']);
     $data = array(
      'user_img' => $userInfo['headimgurl'],
      'user_openid' => $userInfo['openid'],
      'user_name' => filter($userInfo['nickname']),
      'user_register_time' => time(),
      'city' => $userInfo['province'].'-'.$userInfo['city'],
     );
   $id = M('user')->add($data);
   session('openid', $userInfo['openid']);
   session('user_id',$id);
   $jssdk = new \Home\Model\WechatModel();
   $signPackage = $jssdk->GetSignPackage();
   $huiyuanPackage = $jssdk->getHuiYuanSignPackage();
   //获取用户信息 
   $user = M('user')->where(array('user_id' => $id))->find();
   //产品收藏数量统计
   $goods_count = M('goods_shoucang')->where(array('user_id' => $id))->count();
   //门店收藏数量统计
   $shop_count = M('shop_shoucang')->where(array('user_id' => $id))->count();
   }
  }
  $this->assign('signPackage', $signPackage);
  $this->assign('huiyuanPackage', $huiyuanPackage);
  $this->assign('user', $user);
  $this->assign('shop_count', $shop_count);
  $this->assign('goods_count', $goods_count);
  $this->display();
 }