用户关注微信公众号，推送数据处理

<?php

namespace appstoreapicontroller;
use appstoreapimodelWx as WxModel;
use thinkDb;

class Wx extends BaseController
{

public $model = '';

/**
 * 初始化数据
 * Wx constructor.
 */
public function __construct()
{
    parent::__construct();
    $this->model = new WxModel();
}

public function index()
{
    if(!isset($_GET['echostr'])){
        $this->responseMsg();
    }else{
        $this->valid();
    }
    /*$appid = config('wx.wx_app_id');
    $secret=config('wx.wx_app_secret');
    if(!$this->request->get('code','')){
        $redirect_uri = urlEncode('https://test.yishaxiyi.com/storeapi/wxUserInfo');
        $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_userinfo&state=123#wechat_redirect";
        header("Location:$url");
    }else{
        $code = $this->request->get('code','');
        $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$secret&code=$code&grant_type=authorization_code";
        $return = json_decode(curl_get($url),true);
        $access_token = $return['access_token'];
        $openid = $return['openid'];
        $user_info = json_decode(curl_get("https://api.weixin.qq.com/sns/userinfo?access_token=$access_token&openid=$openid&lang=zh_CN"),true);
        $user = Db::name('wx_user')->where('wx_openid','=',$openid)->find();
        if($user){

        }else{
            $post['wx_openid'] = $openid;
            $post['code'] = $code;
            $post['unionid'] = isset($user_info['unionid'])?$user_info['unionid']:'';
            $post['nickname'] = isset($user_info['nickname'])?$user_info['nickname']:'';
            $post['sex'] = isset($user_info['sex'])?$user_info['sex']:'';
            $post['avatar'] = isset($user_info['headimgurl'])?$user_info['headimgurl']:'';
            $post['create_time'] = time();
            return $this->model->addData($post);
        }
    }*/
}

public function valid()
{
    $echoStr = $_GET["echostr"];
    if($this->checkSignature()){
        echo $echoStr;
        exit;
    }
}

private function checkSignature()
{
    $signature = $_GET["signature"];
    $timestamp = $_GET["timestamp"];
    $nonce = $_GET["nonce"];
    $token = config('wx.token');
    $tmpArr = array($token, $timestamp, $nonce);
    sort($tmpArr);
    $tmpStr = implode($tmpArr);
    $tmpStr = sha1($tmpStr);

    if($tmpStr == $signature){
        return true;
    }else{
        return false;
    }
}

public function responseMsg()
{
    $postStr = file_get_contents("php://input");
    if (!empty($postStr)){
        $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
        $RX_TYPE = trim($postObj->MsgType);
        switch ($RX_TYPE)
        {
            case "event":
                $result = $this->receiveEvent($postObj);
                break;
        }
        echo $result;
    }else {
        echo "";
        exit;
    }
}

private function receiveEvent($object)
{
    $content = "";
    switch ($object->Event)
    {
        case "subscribe":   //关注事件
            $content = "欢迎关注马上洗公众号，更多功能持续开发中，敬请期待...";
            break;
        case "unsubscribe": //取消关注事件
            $content = "";
            break;
    }
    $result = $this->transmitText($object, $content);
    return $result;
}

private function transmitText($object, $content)
{
    $textTpl = "<xml>
                    <ToUserName><![CDATA[%s]]></ToUserName>
                    <FromUserName><![CDATA[%s]]></FromUserName>
                    <CreateTime>%s</CreateTime>
                    <MsgType><![CDATA[text]]></MsgType>
                    <Content><![CDATA[%s]]></Content>
                </xml>";
    $result = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content);
    $res = $this->model->where('wx_openid',$object->FromUserName)->find();
    if($res){
        return $result;
    }
    $appid = config('wx.wx_app_id');
    $secret=config('wx.wx_app_secret');
    $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$secret";
    $return = json_decode(curl_get($url),true);
    $access_token = $return['access_token'];
    $getUserInfoUrl = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=$access_token&openid=$object->FromUserName&lang=zh_CN";
    $return = json_decode(curl_get($getUserInfoUrl),true);
    $this->model->insert([
        'subscribe' => $return['subscribe'],
        'unionid' => $return['unionid'],
        'wx_openid' => $return['openid'],
        'nickname' =>$return['nickname'],
        'sex' => $return['sex'],
        'avatar' => $return['headimgurl'],
        'create_time' => time(),
    ]);
    return $result;
}

}