微信开发之授权获取用户信息（昵称、头像等）

测试   
  1. <?php
  2. error_reporting(1);
  3. header('Content-type:text/html; Charset=utf-8');
  4. /* 配置开始 */
  5. $appid = '';  //微信公众平台->开发->基本配置->AppID
  6. $appKey = '';   //微信公众平台->开发->基本配置->AppSecret
  7. /* 配置结束 */
  9. //①、获取用户openid
  10. $wxPay = new WxService($appid,$appKey);
  11. $data = $wxPay->GetOpenid();      //获取openid
  12. if(!$data['openid']) exit('获取openid失败');
  13. //②、获取用户信息
  14. $user = $wxPay->getUserInfo($data['openid'],$data['access_token']);
  15. ?>
  16. <!DOCTYPE html>
  17. <html lang="en">
  18. <head>
  19.     <meta charset="UTF-8">
  20.     <meta name="renderer" content="webkit" />
  21.     <meta http-equiv="X-UA-Compatible" content="IE=edge,Chrome=1" />
  22.     <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
  23.     <title>微信获取用户信息demo</title>
  24.     <link href="https://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">
  25.     <script src="https://cdn.bootcss.com/jquery/2.1.0/jquery.min.js"></script>
  26. </head>
  27. <body>
  28. <div class="container">
  29.     <div class="row">
  30.         <h1>你的基本信息如下：</h1>
  31.         <table class="table table-bordered">
  32.             <tr>
  33.                 <td>openid</td>
  34.                 <td><?=$user['openid']?></td>
  35.             </tr>
  36.             <tr>
  37.                 <td>unionid</td>
  38.                 <td><?=$user['unionid']?></td>
  39.             </tr>
  40.             <tr>
  41.                 <td>昵称</td>
  42.                 <td><?=$user['nickname']?></td>
  43.             </tr>
  44.             <tr>
  45.                 <td>头像</td>
  46.                 <td><img src="<?=$user['headimgurl']?>" style="width: 100px;" alt=""></td>
  47.             </tr>               
  48.             <tr>
  49.                 <td>性别</td>
  50.                 <td><?php
  51.                     switch (strtoupper($user['sex'])){
  52.                         case 1:
  53.                             echo '男性';
  54.                             break;
  55.                         case 2:
  56.                             echo '女性';
  57.                             break;
  58.                         default:
  59.                             echo '未知';
  60.                             break;
  61.                     }
  62.                     ?></td>
  63.             </tr>
  64.             <tr>
  65.                 <td>省份 / 城市</td>
  66.                 <td><?=$user['province'].' / '.$user['city']?></td>
  67.             </tr>
  68.             <tr>
  69.                 <td>language</td>
  70.                 <td><?=$user['language']?></td>
  71.             </tr>
  72.         </table>
  73.     </div>
  74. </div>
  75. </body>
  76. </html>
  77. <?php
  78. class WxService
  79. {
  80.     protected $appid;
  81.     protected $appKey;
  83.     public $data = null;
  85.     public function __construct($appid, $appKey)
  86.     {
  87.         $this->appid = $appid; //微信支付申请对应的公众号的APPID
  88.         $this->appKey = $appKey; //微信支付申请对应的公众号的APP Key
  89.     }
  91.     /**
  92.      * 通过跳转获取用户的openid，跳转流程如下：
  93.      * 1、设置自己需要调回的url及其其他参数，跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize
  94.      * 2、微信服务处理完成之后会跳转回用户redirect_uri地址，此时会带上一些参数，如：code
  95.      *
  96.      * @return 用户的openid
  97.      */
  98.     public function GetOpenid()
  99.     {
  100.         //通过code获得openid
  101.         if (!isset($_GET['code'])){
  102.             //触发微信返回code码
  103.             $baseUrl = $this->getCurrentUrl();
  104.             $url = $this->__CreateOauthUrlForCode($baseUrl);
  105.             Header("Location: $url");
  106.             exit();
  107.         } else {
  108.             //获取code码，以获取openid
  109.             $code = $_GET['code'];
  110.             $openid = $this->getOpenidFromMp($code);
  111.             return $openid;
  112.         }
  113.     }
  115.     public function getCurrentUrl()
  116.     {
  117.         $scheme = $_SERVER['HTTPS']=='on' ? 'https://' : 'http://';
  118.         $uri = $_SERVER['PHP_SELF'].$_SERVER['QUERY_STRING'];
  119.         if($_SERVER['REQUEST_URI']) $uri = $_SERVER['REQUEST_URI'];
  120.         $baseUrl = urlencode($scheme.$_SERVER['HTTP_HOST'].$uri);
  121.         return $baseUrl;
  122.     }
  124.     /**
  125.      * 通过code从工作平台获取openid机器access_token
  126.      * @param string $code 微信跳转回来带上的code
  127.      * @return openid
  128.      */
  129.     public function GetOpenidFromMp($code)
  130.     {
  131.         $url = $this->__CreateOauthUrlForOpenid($code);        
  132.         $res = self::curlGet($url);
  133.         $data = json_decode($res,true);
  134.         $this->data = $data;
  135.         return $data;
  136.     }
  138.     /**
  139.      * 构造获取open和access_toke的url地址
  140.      * @param string $code，微信跳转带回的code
  141.      * @return 请求的url
  142.      */
  143.     private function __CreateOauthUrlForOpenid($code)
  144.     {
  145.         $urlObj["appid"] = $this->appid;
  146.         $urlObj["secret"] = $this->appKey;
  147.         $urlObj["code"] = $code;
  148.         $urlObj["grant_type"] = "authorization_code";
  149.         $bizString = $this->ToUrlParams($urlObj);
  150.         return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
  151.     }
  153.     /**
  154.      * 构造获取code的url连接
  155.      * @param string $redirectUrl 微信服务器回跳的url，需要url编码
  156.      * @return 返回构造好的url
  157.      */
  158.     private function __CreateOauthUrlForCode($redirectUrl)
  159.     {
  160.         $urlObj["appid"] = $this->appid;
  161.         $urlObj["redirect_uri"] = "$redirectUrl";
  162.         $urlObj["response_type"] = "code";
  163.         $urlObj["scope"] = "snsapi_userinfo";
  164.         $urlObj["state"] = "STATE";
  165.         $bizString = $this->ToUrlParams($urlObj);
  166.         return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
  167.     }
  169.     /**
  170.      * 拼接签名字符串
  171.      * @param array $urlObj
  172.      * @return 返回已经拼接好的字符串
  173.      */
  174.     private function ToUrlParams($urlObj)
  175.     {
  176.         $buff = "";
  177.         foreach ($urlObj as $k => $v)
  178.         {
  179.             if($k != "sign") $buff .= $k . "=" . $v . "&";
  180.         }
  181.         $buff = trim($buff, "&");
  182.         return $buff;
  183.     }
  185.     /**
  186.      * 获取用户信息
  187.      * @param string $openid 调用【网页授权获取用户信息】接口获取到用户在该公众号下的Openid
  188.      * @return string
  189.      */
  190.     public function getUserInfo($openid,$access_token)
  191.     {
  193.         $response = self::curlGet('https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN');
  194.         return json_decode($response,true);
  196.     }
  198.     public static function curlGet($url = '', $options = array())
  199.     {
  200.         $ch = curl_init($url);
  201.         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  202.         curl_setopt($ch, CURLOPT_TIMEOUT, 30);
  203.         if (!empty($options)) {
  204.             curl_setopt_array($ch, $options);
  205.         }
  206.         //https请求 不验证证书和host
  207.         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
  208.         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
  209.         $data = curl_exec($ch);
  210.         curl_close($ch);
  211.         return $data;
  212.     }
  214.     public static function curlPost($url = '', $postData = '', $options = array())
  215.     {
  216.         if (is_array($postData)) {
  217.             $postData = http_build_query($postData);
  218.         }
  219.         $ch = curl_init();
  220.         curl_setopt($ch, CURLOPT_URL, $url);
  221.         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  222.         curl_setopt($ch, CURLOPT_POST, 1);
  223.         curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
  224.         curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数
  225.         if (!empty($options)) {
  226.             curl_setopt_array($ch, $options);
  227.         }
  228.         //https请求 不验证证书和host
  229.         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
  230.         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
  231.         $data = curl_exec($ch);
  232.         curl_close($ch);
  233.         return $data;
  234.     }
  236. }


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