基于PHP方法，微信公众号小程序获取code,access_token,openid,用户信息

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//发起获得code值链接 public function doPageGetcode() { $appid = 'yourappid';//修改你的appid if (!$appid) { return this->result(10008, '参数错误', ''); } //这里的redirect_uri地址需要http://,跳转对于登录doPageOpenid方法,在微信公众号上面也有添加这个域名wx.owen.com/ $redirect\_uri = urlencode("[http://wx.owen.com/doPageOpenid](http://wx.owen.com/doPageOpenid)");$url = "open.weixin.qq.com/connect/oau…" . appid . "&redirect\_uri=" . redirect_uri . "&response_type=code&scope=snsapi_userinfo&state=123#wechat_redirect"; header('location:' . $url); }

  public function httpRequest($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;
  }
  
  //获取用户信息和注册
  public function doPageOpenid()
  {
     $appid = "yourappid";//修改你的appid
     $secret = "yourappsecret";//修改你的appsecret
     $code = $_GPC\["code"\];
     
     //小程序

// $url = "[https://api.weixin.qq.com/sns/jscode2session?appid=](https://api.weixin.qq.com/sns/jscode2session?appid=)" .$appid . "&secret=" . secret . "&js\_code=" . code . "&grant_type=authorization_code"; //公众号// 获得$access\_token //$url = "api.weixin.qq.com/cgi-bin/tok…" . appid . "&secret=" . secret; //公众号// 获得当前用户的Openid和access_token $url = '[https://api.weixin.qq.com/sns/oauth2/access\_token?appid=](https://api.weixin.qq.com/sns/oauth2/access_token?appid=)' .$appid . '&secret=' . secret . '&code=' . code . '&grant_type=authorization_code';

     $res = $this->httpRequest($url);
     $jsoninfo = json_decode($res, true);
     $access\_token = $jsoninfo\["access\_token"\];
     $openid = $jsoninfo\["openid"\];

// // 获得所有关注用户的Openid // $url = "[https://api.weixin.qq.com/cgi-bin/user/get?access\_token=](https://api.weixin.qq.com/cgi-bin/user/get?access_token=)" .$access_token; // $result =$this->httpRequest($url); //$jsoninfo = json_decode($result, true); //$openid = $jsoninfo["data"]["openid"][0];

     if ($access_token && $openid) {
        $url = "https://api.weixin.qq.com/sns/userinfo?access\_token=" . $access\_token . "&openid=" . $openid . "&lang=zh_CN";
        $output = $this->httpRequest($url);

//用户信息数组jsonUserinfo $jsonUserinfo = json\_decode($output, true); return $this->result(0, '登录成功',$jsonUserinfo); } } }

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