$hosturl = urlencode('');//异步回调地址

$wechatInfo = WechatInfo::get_wechat(); //查询appid

$url    = "https://open.weixin.qq.com/connect/oauth2/authorize?appid={$wechatInfo['appid']}&redirect_uri={$hosturl}&response_type=code&scope=snsapi_base&state={$user['user_id']}#wechat_redirect";

$result = ['status' => 2, 'msg' => '登陆成功', 'data' => $user, 'url' => $url];

$code = input('code');

$user_id = input('state');

$wechatInfo = WechatInfo::get_wechat();

$appid  = $wechatInfo['appid'];

$secret = $wechatInfo['appsecret'];

$url    = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$appid}&secret={$secret}&code={$code}&grant_type=authorization_code";

$sdk =Jssdk::curlGet($url);

有那些不明白的，可以在评论里留言，我会及时的回复大家的