微信内置浏览器打开的网页，获取微信用户openid
微信浏览器获取用户信息是经常可以看到的，但是对于微信浏览器获取用户信息究竟如何实现？这篇文章将给你说明微信浏览器获取用户信息的问题。
我已开通300元的开发者账号。
需求如下：
现有一wap网页，用户使用微信内置浏览器打开（ 通过微信朋友圈/朋友分享，或微信扫网页二维码等方式进入，与公众号无关），该网页如何获取用户的微信openid呢？
按照官方的微信登录帮助，是可以实现扫码登录，但是针对PC版的--微信扫码，电脑端登录。而我的情况是当前网页是在手机微信打开的，还怎么扫码呢？
我见有些网站是可以实现的，会弹出授权提示框，但不知是如何实现的？谢谢了！！
回复讨论(解决方案)
http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
看看这个
微信内置浏览器获取用户的微信openid,微信公众平台OAuth2.0网页授权
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首先你的网站入口必须是微信服务号（开通认证、拥有获取用户openid权限；订阅号是不行的）。
网页通过微信的Oauth2认证链接。
然后通过服务号菜单链接进入网站，如： https://open.weixin.qq.com/connect/oauth2/authorize?appid=YOURAPPID&redirect_uri=http://YOUWEBSITE/oauth2.php&response_type=code&scope=snsapi_base&state=STATE#wechat_redirect
自己根据微信提供的oauth2接口文档，编写oauth2.php内容，（网上有相关官方SDK）
按下面的步骤：
1.获取用户openid
2.获取accesson_token
3.获取用户信息
4.授权注册用户,若已存在该用户则直接进入网站。
微信里面打开出现授权提示框，这个是微信公众号的登陆
当用户点击授权后，会跳转到你的页面，参数里面就会带上token
然后你再通过token调用接口，查询openid等等
有的页面，用外部浏览器打开就会有如下提示，有的就没有，是怎么做到的呢？
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