微信公众号实现会员卡领取功能

1、会员卡的领取也需要js-sdk接口（可以参考获取微信公众号获取用户的地理位置信息）（借鉴网址：）

2、 比获取用户地理位置信息多了一个是需要单独获取签名包，签名方式也和获取用户地理位置的不同（这里再说一下获取签名包的方式）

      获取js-sdk签名包：

           1、当前的url、时间戳、随机字符串、jsapiticket进行组合                

 //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; 
 }

     获取会员卡签名包：      

//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; 
 }

详细代码说明：

     html页面：         

  //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: '<?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
  'addcard'
  ]
   });
wx.ready(function(){
        //添加卡券
    document.queryselector('#addcard').onclick = function () {
     wx.addcard({
      cardlist: [
      {
       cardid: "",//微信公众号内创建的会员卡的id
       cardext: '{"timestamp":"<?php echo $huiyuanpackage['timestamp'] ?>","signature":"<?php echo $huiyuanpackage['signature'] ?>"}'//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: '__controller__/edithuiyuan',
      type: 'post',
      datatype: 'json',
      data: {is_lingqu: '1',user_id:"<?php echo $user['user_id'] ?>"},
      success:function(){
      $("#addcard").html("我的会员卡");
      }
      })
      }
     });
    };
   });
</script>

控制器中的代码：

   类库：//www.jb51.net/article/115732.htm

 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();
 }

以上所述是小编给大家介绍的微信公众号实现会员卡领取功能，希望对大家有所帮助