PHP实现网站微信扫码关注公众号后自动注册登陆实现方法及代码【关注收藏】

在网站注册登陆这环节，增加微信扫码注册登陆，普通的方法需要开通微信开发者平台，生成二维码扫码后才能获取用户的uinonid或openid，实现注册登陆，但这样比较麻烦还要企业认证交费开发者平台，而且没有和公众号强制绑定，不能实现公众号粉丝积累。

下面详情给大家说下原理和代码实现，【建议点关注收藏】，更多实用技术分享给大家。
可以实现网站微信扫码关注公众号后自动注册登陆实现方法，同时，可以多个网站公用一个公众号扫码登陆，做一个域名转发就行。

实现的原理：

配置公众号后台服务器接口地址。
每次网站打开生成的二维码带上一个随机数，一个码对应一个随机数保存到数据库。
网站接口实现接收微信服务器发送过来的信息中带有随机数和openid信息，已关注用户自动登陆设置随机码状态为登陆，未关注公众号实现注册登陆后设置随机码状态为登陆。
网站前端轮询随机码看是否登陆状态，是就设置登陆。

具体实现步骤：
微信公众号服务器配置，设置与开发-服务器配置，填入你的网站的接收微信发送信息地址。
在这里插入图片描述
代码实现：
代码里用的是php的 EasyWeChat第三方组件库

public function index()
{$this->app->server->push(function ($message) {switch ($message['MsgType']) {case 'event'://接收事件推送: https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140454switch ($message['Event']) {case 'subscribe':  //关注事件, 扫描带参数二维码事件(用户未关注时，进行关注后的事件推送)$message['EventKey'] = str_replace('qrscene_','',$message['EventKey']);//别的站扫码登陆 域名转发if(strpos($message['EventKey'],'antcome')!==false || strpos($message['EventKey'],'axure9')!==false || strpos($message['EventKey'],'aichat')!==false){$post['code'] = $message['EventKey'];$post['openid'] = $message['FromUserName'];self::transfer_scan_code($post);}else{$WechatScan = new WechatScanModel();$find_user = Db::name('third_party_user')->where('openid',$message['FromUserName'])->find();if($find_user){$WechatScan->checkScan($message['EventKey'], $find_user['user_id']);}else{//官方接口调整无法取得用户头像和昵称，https://developers.weixin.qq.com/doc/offiaccount/User_Management/Get_users_basic_information_UnionID.html$userinfo = $this->app->user->get($message['FromUserName']);$userinfo['headimgurl'] = '/static/images/user.png';$uid = Db::name('user')->order('id desc')->value('id');$userinfo['nickname'] = 'uihtm_'.($uid+1);//分销pid$scanCode = $WechatScan->getScanCode($message['EventKey']);if(!empty($scanCode['pid']))$userinfo['pid'] = $scanCode['pid'];$user_id = $WechatScan->saveUserInfo($userinfo);$WechatScan->checkScan($message['EventKey'], $user_id);//$WechatScan->checkScan($message['EventKey']);}}return "谢谢关注!\n"."<a href='".cmf_get_domain()."/wechat/index/user_auth'>点击授权登陆</a>";break;case 'unsubscribe':  //取消关注事件break;case 'SCAN':  //扫描带参数二维码事件(用户已关注时的事件推送)//别的站扫码登陆 域名转发if(strpos($message['EventKey'],'antcome')!==false || strpos($message['EventKey'],'axure9')!==false || strpos($message['EventKey'],'aichat')!==false){$post['code'] = $message['EventKey'];$post['openid'] = $message['FromUserName'];self::transfer_scan_code($post);}else{$WechatScan = new WechatScanModel();$find_user = Db::name('third_party_user')->where('openid',$message['FromUserName'])->find();if($find_user){$WechatScan->checkScan($message['EventKey'], $find_user['user_id']);}else{$userinfo = $this->app->user->get($message['FromUserName']);$userinfo['headimgurl'] = '/static/images/user.png';$uid = Db::name('user')->order('id desc')->value('id');$userinfo['nickname'] = 'uihtm_'.($uid+1);$user_id = $WechatScan->saveUserInfo($userinfo);$WechatScan->checkScan($message['EventKey'], $user_id);}}//更新用户昵称和头像if(strpos($find_user['nickname'], 'uihtm')!==false) {return "谢谢关注!\n" . "<a href='" . cmf_get_domain() . "/wechat/xxxxx'>点击授权登陆</a>";}elsereturn "谢谢关注!\n";break;case 'LOCATION':  //上报地理位置事件return "经度: " . $message['Longitude'] . "\n纬度: " . $message['Latitude'] . "\n精度: " . $message['Precision'];break;case 'CLICK':  //自定义菜单事件(点击菜单拉取消息时的事件推送)return "事件KEY值: " . $message['EventKey'];break;case 'VIEW':  //自定义菜单事件(点击菜单拉取消息时的事件推送)return "跳转URL: " . $message['EventKey'];break;case 'ShakearoundUserShake':Log::info('摇一摇周边事件');//摇一摇事件通知: https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1443448066return 'ChosenBeacon\n' . 'Uuid: ' . $message['ChosenBeacon']['Uuid'] . 'Major: ' . $message['ChosenBeacon']['Major'] . 'Minor: ' . $message['ChosenBeacon']['Minor'] . 'Distance: ' . $message['ChosenBeacon']['Distance'];break;default:return $message['Event'];break;}break;//接收普通消息: https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421140453case 'text':return "Content: " . $message['Content'];break;case 'image':return "MediaId: " . $message['MediaId'] . "\nPicUrl: " . $message['PicUrl'];break;case 'voice':return "MediaId: " . $message['MediaId'] . "\nFormat: " . $message['Format'] . "\nRecognition: " . $message['Recognition'];break;case 'video':return "MediaId: " . $message['MediaId'] . "\nThumbMediaId: " . $message['ThumbMediaId'];break;case 'shortvideo':return "MediaId: " . $message['MediaId'] . "\nThumbMediaId: " . $message['ThumbMediaId'];break;case 'location':return "Location_X: " . $message['Location_X'] . "\nLocation_Y: " . $message['Location_Y'] . "\nScale: " . $message['Scale'] . "\nLabel: " . $message['Label'];break;case 'link':return "Title: " . $message['Title'] . "\nDescription: " . $message['Description'] . "\nUrl: " . $message['Url'];break;default:return $message['MsgType'];break;}//return "您好！验证码: ";});//        $this->app->server->setMessageHandler(function ($message) {
//            return "您好！欢迎使用 EasyWeChat!";
//        });return $this->app->server->serve()->send();
}//多网站公用转发codeprivate function transfer_scan_code($post=[]){if(strpos($post['code'],'uihtm.com')!==false)HttpService::post('https://www.uihtm.com/api/xxxxx', $post);if(strpos($post['code'],'antcome.com')!==false)HttpService::post('https://www.antcome.com/api/xxxxx', $post);if(strpos($post['code'],'axure9.com')!==false)HttpService::post('https://www.axure9.com/api/xxxxxx', $post);if(strpos($post['code'],'aichat')!==false)HttpService::post('https://chat.abc.com/web.php/wxmp/xxxxxx', $post);}