微信公众号平台-pc-微信登陆

直接上代码
后台tp5
php

   //判断是否扫码
    public function getapiopenid(){
        $sence_id = input('sence_id');
        $user = db('apitem');
        $where['str']=array('like','%'.$sence_id.'%');
        $res_istrue = $user->where($where)->find();
        $openid = $res_istrue['openid'];
        Session::set('openid',$openid);

        $data = array(
            'data' => true,
            'code' => 200,
            'msg'  => '成功 !',
        );
        // 修改失败 返回信息
        if (!$res_istrue) {
            $data = array(
                'data' => false,
                'code' => 500,
                'msg'  => '失败 !',
            );

        }

        return $data;
    }
    // pc端扫码微信会给这个方法推送消息
    private function getticket(){
            $signature = input('signature');
//        $timestamp =input('timestamp');
//        $nonce = input('nonce');
//        $echoStr = $_GET["echostr"];
//        $token = 'kinder';
//        $tmpArr = array($token, $timestamp, $nonce);
//        sort($tmpArr, SORT_STRING);
//        $tmpStr = implode( $tmpArr );
//        $tmpStr = sha1( $tmpStr );
//
//        if( $tmpStr == $signature ){
//            echo $echoStr;
//        }
//        die;
        //$GLOBALS["HTTP_RAW_POST_DATA"];  //这个用不了了；换成下面那个

        //$GLOBALS["HTTP_RAW_POST_DATA"];  //这个用不了了；换成下面那个
        $postStr = file_get_contents("php://input");
        if($postStr){
            $postObj = json_decode(json_encode(simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA)),true);

            $openid =  isset($postObj['FromUserName'])?$postObj['FromUserName']:0;;
            $str =   isset($postObj['EventKey'])?$postObj['EventKey']:0;

            $list['openid'] = $openid;
            $list['str'] = $str;
            // 储存用户信息
            $user = db('apitem');

            $res_istrue = $user->where(['openid'=>$openid])->find();
            if(!$res_istrue){
                $user->insert($list);//主表添加
            }else{
                $user->where(['openid'=>$openid])->update($list);
            }
        };


        return "success";
    }
// 获取令牌
    private function getactionGetToken(){
        $url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.appid.'&secret='.appsecret;
        $res = json_decode($this->actionCurlRequest($url));
        return $res->access_token;
    }
    //curl请求，支持post和get
    private function actionCurlRequest($url,$data=null){
        $curl = curl_init();
        curl_setopt($curl,CURLOPT_URL,$url);
        curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,FALSE);
        if(!empty($data)){
            curl_setopt($curl,CURLOPT_POST,1);
            curl_setopt($curl,CURLOPT_POSTFIELDS,$data);
        }

        curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);
        $output = curl_exec($curl);
        curl_close($curl);
        return $output;
    }

前台

$(document).ready(function(){
        setInterval(getLoc,1000);
    });


    //对接后台查看是否登陆
    function getLoc(){
        var sence_id = $(".sence_id").html();
        if(sence_id != 0){
            // ajax 后台读取信息
            $.ajax({
                type:"get",
                dataType:'json',
                async:false,
                url:'{:url("/index/apiopenid")}',
                data:{"sence_id":sence_id},
                success:function(dd){
                    if (dd.code == 200) {
                        //                        alert("报名成功");
                        // 跳转地址
                        location.href ='{:url("/index/sign")}'
                        return false;
                    }else{
                        console.log("未登录");
                    }
                }
            })
        }

    }