获取微信用户信息

老陌笔记
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 <?php
  error_reporting(1);
  header('Content-type:text/html; Charset=utf-8');
  /* 配置开始 */
  $appid = '';  //微信公众平台->开发->基本配置->AppID
  $appKey = '';   //微信公众平台->开发->基本配置->AppSecret
  /* 配置结束 */

  //①、获取用户openid
  $wxPay = new WxService($appid,$appKey);
  $data = $wxPay->GetOpenid();      //获取openid
  if(!$data['openid']) exit('获取openid失败');
  //②、获取用户信息
  $user = $wxPay->getUserInfo($data['openid'],$data['access_token']);
  ?>
  <!DOCTYPE html>
  <html lang="en">
  <head>
      <meta charset="UTF-8">
      <meta name="renderer" content="webkit" />
      <meta http-equiv="X-UA-Compatible" content="IE=edge,Chrome=1" />
      <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
      <title>微信获取用户信息demo</title>
      <link href="https://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">
      <script src="https://cdn.bootcss.com/jquery/2.1.0/jquery.min.js"></script>
  </head>
  <body>
  <div class="container">
      <div class="row">
          <h1>你的基本信息如下：</h1>
          <table class="table table-bordered">
              <tr>
                  <td>openid</td>
                  <td><?=$user['openid']?></td>
              </tr>
              <tr>
                  <td>unionid</td>
                  <td><?=$user['unionid']?></td>
              </tr>
              <tr>
                  <td>昵称</td>
                  <td><?=$user['nickname']?></td>
              </tr>
              <tr>
                  <td>头像</td>
                  <td><img src="<?=$user['headimgurl']?>" style="width: 100px;" alt=""></td>
              </tr>               
              <tr>
                  <td>性别</td>
                  <td><?php
                      switch (strtoupper($user['sex'])){
                          case 1:
                              echo '男性';
                              break;
                          case 2:
                              echo '女性';
                              break;
                          default:
                              echo '未知';
                              break;
                      }
                      ?></td>
              </tr>
              <tr>
                  <td>省份 / 城市</td>
                  <td><?=$user['province'].' / '.$user['city']?></td>
              </tr>
              <tr>
                  <td>language</td>
                  <td><?=$user['language']?></td>
              </tr>
          </table>
      </div>
  </div>
  </body>
  </html>
  <?php
  class WxService
  {
      protected $appid;
      protected $appKey;

      public $data = null;

      public function __construct($appid, $appKey)
      {
          $this->appid = $appid; //微信支付申请对应的公众号的APPID
          $this->appKey = $appKey; //微信支付申请对应的公众号的APP Key
      }

      /**
       * 通过跳转获取用户的openid，跳转流程如下：
       * 1、设置自己需要调回的url及其其他参数，跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize
       * 2、微信服务处理完成之后会跳转回用户redirect_uri地址，此时会带上一些参数，如：code
       *
       * @return 用户的openid
       */
      public function GetOpenid()
      {
          //通过code获得openid
          if (!isset($_GET['code'])){
              //触发微信返回code码
              $baseUrl = $this->getCurrentUrl();
              $url = $this->__CreateOauthUrlForCode($baseUrl);
              Header("Location: $url");
              exit();
          } else {
              //获取code码，以获取openid
              $code = $_GET['code'];
              $openid = $this->getOpenidFromMp($code);
              return $openid;
          }
      }

      public function getCurrentUrl()
      {
          $scheme = $_SERVER['HTTPS']=='on' ? 'https://' : 'http://';
          $uri = $_SERVER['PHP_SELF'].$_SERVER['QUERY_STRING'];
          if($_SERVER['REQUEST_URI']) $uri = $_SERVER['REQUEST_URI'];
          $baseUrl = urlencode($scheme.$_SERVER['HTTP_HOST'].$uri);
          return $baseUrl;
      }

      /**
       * 通过code从工作平台获取openid机器access_token
       * @param string $code 微信跳转回来带上的code
       * @return openid
       */
      public function GetOpenidFromMp($code)
      {
          $url = $this->__CreateOauthUrlForOpenid($code);        
          $res = self::curlGet($url);
          $data = json_decode($res,true);
          $this->data = $data;
          return $data;
      }

      /**
       * 构造获取open和access_toke的url地址
       * @param string $code，微信跳转带回的code
       * @return 请求的url
       */
      private function __CreateOauthUrlForOpenid($code)
      {
          $urlObj["appid"] = $this->appid;
          $urlObj["secret"] = $this->appKey;
          $urlObj["code"] = $code;
          $urlObj["grant_type"] = "authorization_code";
          $bizString = $this->ToUrlParams($urlObj);
          return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
      }

      /**
       * 构造获取code的url连接
       * @param string $redirectUrl 微信服务器回跳的url，需要url编码
       * @return 返回构造好的url
       */
      private function __CreateOauthUrlForCode($redirectUrl)
      {
          $urlObj["appid"] = $this->appid;
          $urlObj["redirect_uri"] = "$redirectUrl";
          $urlObj["response_type"] = "code";
          $urlObj["scope"] = "snsapi_userinfo";
          $urlObj["state"] = "STATE";
          $bizString = $this->ToUrlParams($urlObj);
          return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
      }

      /**
       * 拼接签名字符串
       * @param array $urlObj
       * @return 返回已经拼接好的字符串
       */
      private function ToUrlParams($urlObj)
      {
          $buff = "";
          foreach ($urlObj as $k => $v)
          {
              if($k != "sign") $buff .= $k . "=" . $v . "&";
          }
          $buff = trim($buff, "&");
          return $buff;
      }

      /**
       * 获取用户信息
       * @param string $openid 调用【网页授权获取用户信息】接口获取到用户在该公众号下的Openid
       * @return string
       */
      public function getUserInfo($openid,$access_token)
      {

          $response = self::curlGet('https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN');
          return json_decode($response,true);

      }

      public static function curlGet($url = '', $options = array())
      {
          $ch = curl_init($url);
          curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
          curl_setopt($ch, CURLOPT_TIMEOUT, 30);
          if (!empty($options)) {
              curl_setopt_array($ch, $options);
          }
          //https请求 不验证证书和host
          curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
          curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
          $data = curl_exec($ch);
          curl_close($ch);
          return $data;
      }

      public static function curlPost($url = '', $postData = '', $options = array())
      {
          if (is_array($postData)) {
              $postData = http_build_query($postData);
          }
          $ch = curl_init();
          curl_setopt($ch, CURLOPT_URL, $url);
          curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
          curl_setopt($ch, CURLOPT_POST, 1);
          curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
          curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
          if (!empty($options)) {
              curl_setopt_array($ch, $options);
          }
          //https请求 不验证证书和host
          curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
          curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
          $data = curl_exec($ch);
          curl_close($ch);
          return $data;
      }

    }
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