PHP版QQ互联OAuth示例代码分享

由于国内QQ用户的普遍性，所以现在各大网站都尽可能的提供QQ登陆口，下面我们来看看php版，给大家参考下

    /**
     * QQ互联 oauth
     * @author dyllen
     *
     */
    class Oauth
    {
      //取Authorization Code Url
      const PC_CODE_URL = 'https://graph.qq.com/oauth2.0/authorize';

      //取Access Token Url
      const PC_ACCESS_TOKEN_URL = 'https://graph.qq.com/oauth2.0/token';

      //取用户 Open Id Url
      const OPEN_ID_URL = 'https://graph.qq.com/oauth2.0/me';

      //用户授权之后的回调地址
      public $redirectUri = null;

      // App Id
      public $appid = null;

      //App Key
      public $appKey = null;

      //授权列表
      //字符串，多个用逗号隔开
      public $scope = null;

      //授权code
      public $code = null;

      //续期access token的凭证
      public $refreshToken = null;

      //access token
      public $accessToken = null;

      //access token 有效期，单位秒
      public $expiresIn = null;

      //state
      public $state = null;

      public $openid = null;

      //construct
      public function __construct($config=[])
      {
        foreach($config as $key => $value) {
          $this->$key = $value;
        }
      }

      /**
       * 得到获取Code的url
       * @throws \InvalidArgumentException
       * @return string
       */
      public function codeUrl()
      {
        if (!$this->redirectUri) {
          throw new \Exception('parameter $redirectUri must be set.');
        }
        $query = [
            'response_type' => 'code',
            'client_id' => $this->appid,
            'redirect_uri' => $this->redirectUri,
            'state' => $this->getState(),
            'scope' => $this->scope,
        ];

        return self::PC_CODE_URL . '?' . http_build_query($query);
      }

      /**
       * 取access token
       * @throws Exception
       * @return boolean
       */
      public function getAccessToken()
      {
        $params = [
            'grant_type' => 'authorization_code',
            'client_id' => $this->appid,
            'client_secret' => $this->appKey,
            'code' => $this->code,
            'redirect_uri' => $this->redirectUri,
        ];

        $url = self::PC_ACCESS_TOKEN_URL . '?' . http_build_query($params);
        $content = $this->getUrl($url);
        parse_str($content, $res);
        if ( !isset($res['access_token']) ) {
          $this->thrwoError($content);
        }

        $this->accessToken = $res['access_token'];
        $this->expiresIn = $res['expires_in'];
        $this->refreshToken = $res['refresh_token'];

        return true;
      }

      /**
       * 刷新access token
       * @throws Exception
       * @return boolean
       */
      public function refreshToken()
      {
        $params = [
            'grant_type' => 'refresh_token',
            'client_id' => $this->appid,
            'client_secret' => $this->appKey,
            'refresh_token' => $this->refreshToken,
        ];

        $url = self::PC_ACCESS_TOKEN_URL . '?' . http_build_query($params);
        $content = $this->getUrl($url);
        parse_str($content, $res);
        if ( !isset($res['access_token']) ) {
          $this->thrwoError($content);
        }

        $this->accessToken = $res['access_token'];
        $this->expiresIn = $res['expires_in'];
        $this->refreshToken = $res['refresh_token'];

        return true;
      }

      /**
       * 取用户open id
       * @return string
       */
      public function getOpenid()
      {
        $params = [
            'access_token' => $this->accessToken,
        ];

        $url = self::OPEN_ID_URL . '?' . http_build_query($params);

        $this->openid = $this->parseOpenid( $this->getUrl($url) );

        return $this->openid;
      }

      /**
       * get方式取url内容
       * @param string $url
       * @return mixed
       */
      public function getUrl($url)
      {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_URL, $url);
        $response = curl_exec($ch);
        curl_close($ch);

        return $response;
      }

      /**
       * post方式取url内容
       * @param string $url
       * @param array $keysArr
       * @param number $flag
       * @return mixed
       */
      public function postUrl($url, $keysArr, $flag = 0)
      {
        $ch = curl_init();
        if(! $flag) curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_POST, TRUE);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $keysArr);
        curl_setopt($ch, CURLOPT_URL, $url);
        $ret = curl_exec($ch);

        curl_close($ch);
        return $ret;
      }


      /**
       * 取state
       * @return string
       */
      protected function getState()
      {
        $this->state = md5(uniqid(rand(), true));
        //state暂存在缓存里面
        //自己定义
            //。。。。。。。。。

        return $this->state;
      }

      /**
       * 验证state
       * @return boolean
       */
      protected function verifyState()
      {
        //。。。。。。。
      }

      /**
       * 抛出异常
       * @param string $error
       * @throws \Exception
       */
      protected function thrwoError($error)
      {
        $subError = substr($error, strpos($error, "{"));
        $subError = strstr($subError, "}", true) . "}";
        $error = json_decode($subError, true);

        throw new \Exception($error['error_description'], (int)$error['error']);
      }

      /**
       * 从获取openid接口的返回数据中解析出openid
       * @param string $str
       * @return string
       */
      protected function parseOpenid($str)
      {
        $subStr = substr($str, strpos($str, "{"));
        $subStr = strstr($subStr, "}", true) . "}";
        $strArr = json_decode($subStr, true);
        if(!isset($strArr['openid'])) {
          $this->thrwoError($str);
        }

        return $strArr['openid'];
      }
    }

以上所述就是本文的全部内容了，希望大家能够喜欢。