未定义的属性：stdClass :: $ followers_count(Undefined property: stdClass::$followers_count)

 我正在通过混合身份验证框架工作开发社交粉丝数。我正在学习PHP / MYSQL和API中的这种初学者。我不明白为什么我得到这个的错误。 
 
 这是与我的粉丝计数代码的Hybrid auth示例代码。 帮帮我 
 
    <?php
  // start a new session (required for Hybridauth)
  session_start();

  // change the following paths if necessary
  $config   = dirname(__FILE__) . '/hybridauth/hybridauth/config.php';
  require_once( "hybridauth/hybridauth/Hybrid/Auth.php" );

  try{
    // create an instance for Hybridauth with the configuration file path as parameter
    $hybridauth = new Hybrid_Auth( $config );

    // try to authenticate the user with twitter,
    // user will be redirected to Twitter for authentication,
    // if he already did, then Hybridauth will ignore this step and return an instance of the adapter
    $twitter = $hybridauth->authenticate( "Twitter" );

    // get the user profile
    $twitter_user_profile = $twitter->getUserProfile();

    echo "Ohai there! U are connected with: <b>{$twitter->id}</b><br />";
    echo "As: <b>{$twitter_user_profile->displayName}</b><br />";

   // echo "As: <b>{$twitter_user_profile->following}</b><br />";

    // debug the user profile


  }
  catch( Exception $e ){
    // Display the recived error,
    // to know more please refer to Exceptions handling section on the userguide
    switch( $e->getCode() ){
      case 0 : echo "Unspecified error."; break;
      case 1 : echo "Hybriauth configuration error."; break;
      case 2 : echo "Provider not properly configured."; break;
      case 3 : echo "Unknown or disabled provider."; break;
      case 4 : echo "Missing provider application credentials."; break;
      case 5 : echo "Authentification failed. "
                  . "The user has canceled the authentication or the provider refused the connection.";
               break;
      case 6 : echo "User profile request failed. Most likely the user is not connected "
                  . "to the provider and he should authenticate again.";
               $twitter->logout();
               break;
      case 7 : echo "User not connected to the provider.";
               $twitter->logout();
               break;
      case 8 : echo "Provider does not support this feature."; break;
    }

    // well, basically your should not display this to the end user, just give him a hint and move on..
    echo "<br /><br /><b>Original error message:</b> " . $e->getMessage();
  }


require_once 'twitteroauth-master/src/twitteroauth.php';
require_once 'config.php';

require "twitteroauth-master/vendor/autoload.php";

use Abraham\TwitterOAuth\TwitterOAuth;



define("CONSUMER_KEY", "*****");
define("CONSUMER_SECRET", "****");
define("OAUTH_TOKEN", "*****");
define("OAUTH_SECRET", "******");
$username = 'kodeordie'; //Your twitter screen name or page name
$connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, OAUTH_TOKEN, OAUTH_SECRET);
$followers = $connection->get('users/show', array('screen_name' => $username));
$followers = json_decode($followers,true);
$f = $followers['followers_count'];
echo $f;
?>
 
 Twitteroauth.php 
 
<?php

/*
 * Abraham Williams (abraham@abrah.am) http://abrah.am
 *
 * The first PHP Library to support OAuth for Twitter's REST API.
 */

/**
 * Twitter OAuth class
 */
class TwitterOAuth {
  /* Contains the last HTTP status code returned. */
  public $http_code;
  /* Contains the last API call. */
  public $url;
  /* Set up the API root URL. */
  public $host = "https://api.twitter.com/1.1/";
  /* Set timeout default. */
  public $timeout = 30;
  /* Set connect timeout. */
  public $connecttimeout = 30; 
  /* Verify SSL Cert. */
  public $ssl_verifypeer = FALSE;
  /* Respons format. */
  public $format = 'json';
  /* Decode returned json data. */
  public $decode_json = TRUE;
  /* Contains the last HTTP headers returned. */
  public $http_info;
  /* Set the useragnet. */
  public $useragent = 'TwitterOAuth v0.2.0-beta2';
  /* Immediately retry the API call if the response was not successful. */
  //public $retry = TRUE;




  /**
   * Set API URLS
   */
  function accessTokenURL()  { return 'https://api.twitter.com/oauth/access_token'; }
  function authenticateURL() { return 'https://api.twitter.com/oauth/authenticate'; }
  function authorizeURL()    { return 'https://api.twitter.com/oauth/authorize'; }
  function requestTokenURL() { return 'https://api.twitter.com/oauth/request_token'; }

  /**
   * Debug helpers
   */
  function lastStatusCode() { return $this->http_status; }
  function lastAPICall() { return $this->last_api_call; }

  /**
   * construct TwitterOAuth object
   */
  function __construct($consumer_key, $consumer_secret, $oauth_token = NULL, $oauth_token_secret = NULL) {
    $this->sha1_method = new OAuthSignatureMethod_HMAC_SHA1();
    $this->consumer = new OAuthConsumer($consumer_key, $consumer_secret);
    if (!empty($oauth_token) && !empty($oauth_token_secret)) {
      $this->token = new OAuthConsumer($oauth_token, $oauth_token_secret);
    } else {
      $this->token = NULL;
    }
  }


  /**
   * Get a request_token from Twitter
   *
   * @returns a key/value array containing oauth_token and oauth_token_secret
   */
  function getRequestToken($oauth_callback) {
    $parameters = array();
    $parameters['oauth_callback'] = $oauth_callback; 
    $request = $this->oAuthRequest($this->requestTokenURL(), 'GET', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * Get the authorize URL
   *
   * @returns a string
   */
  function getAuthorizeURL($token, $sign_in_with_twitter = TRUE) {
    if (is_array($token)) {
      $token = $token['oauth_token'];
    }
    if (empty($sign_in_with_twitter)) {
      return $this->authorizeURL() . "?oauth_token={$token}";
    } else {
       return $this->authenticateURL() . "?oauth_token={$token}";
    }
  }

  /**
   * Exchange request token and secret for an access token and
   * secret, to sign API calls.
   *
   * @returns array("oauth_token" => "the-access-token",
   *                "oauth_token_secret" => "the-access-secret",
   *                "user_id" => "9436992",
   *                "screen_name" => "abraham")
   */
  function getAccessToken($oauth_verifier) {
    $parameters = array();
    $parameters['oauth_verifier'] = $oauth_verifier;
    $request = $this->oAuthRequest($this->accessTokenURL(), 'GET', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * One time exchange of username and password for access token and secret.
   *
   * @returns array("oauth_token" => "the-access-token",
   *                "oauth_token_secret" => "the-access-secret",
   *                "user_id" => "9436992",
   *                "screen_name" => "abraham",
   *                "x_auth_expires" => "0")
   */  
  function getXAuthToken($username, $password) {
    $parameters = array();
    $parameters['x_auth_username'] = $username;
    $parameters['x_auth_password'] = $password;
    $parameters['x_auth_mode'] = 'client_auth';
    $request = $this->oAuthRequest($this->accessTokenURL(), 'POST', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * GET wrapper for oAuthRequest.
   */
  function get($url, $parameters = array()) {
    $response = $this->oAuthRequest($url, 'GET', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * POST wrapper for oAuthRequest.
   */
  function post($url, $parameters = array()) {
    $response = $this->oAuthRequest($url, 'POST', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * DELETE wrapper for oAuthReqeust.
   */
  function delete($url, $parameters = array()) {
    $response = $this->oAuthRequest($url, 'DELETE', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * Format and sign an OAuth / API request
   */
  function oAuthRequest($url, $method, $parameters) {
    if (strrpos($url, 'https://') !== 0 && strrpos($url, 'http://') !== 0) {
      $url = "{$this->host}{$url}.{$this->format}";
    }
    $request = OAuthRequest::from_consumer_and_token($this->consumer, $this->token, $method, $url, $parameters);
    $request->sign_request($this->sha1_method, $this->consumer, $this->token);
    switch ($method) {
    case 'GET':
      return $this->http($request->to_url(), 'GET');
    default:
      return $this->http($request->get_normalized_http_url(), $method, $request->to_postdata());
    }
  }

  /**
   * Make an HTTP request
   *
   * @return API results
   */
  function http($url, $method, $postfields = NULL) {
    $this->http_info = array();
    $ci = curl_init();
    /* Curl settings */
    curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent);
    curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout);
    curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout);
    curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ci, CURLOPT_HTTPHEADER, array('Expect:'));
    curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer);
    curl_setopt($ci, CURLOPT_HEADERFUNCTION, array($this, 'getHeader'));
    curl_setopt($ci, CURLOPT_HEADER, FALSE);

    switch ($method) {
      case 'POST':
        curl_setopt($ci, CURLOPT_POST, TRUE);
        if (!empty($postfields)) {
          curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
        }
        break;
      case 'DELETE':
        curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'DELETE');
        if (!empty($postfields)) {
          $url = "{$url}?{$postfields}";
        }
    }

    curl_setopt($ci, CURLOPT_URL, $url);
    $response = curl_exec($ci);
    $this->http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
    $this->http_info = array_merge($this->http_info, curl_getinfo($ci));
    $this->url = $url;
    curl_close ($ci);
    return $response;
  }

  /**
   * Get the header info to store.
   */
  function getHeader($ch, $header) {
    $i = strpos($header, ':');
    if (!empty($i)) {
      $key = str_replace('-', '_', strtolower(substr($header, 0, $i)));
      $value = trim(substr($header, $i + 2));
      $this->http_header[$key] = $value;
    }
    return strlen($header);
  }
}

I am developing a social followers count via Hybrid auth frame work.I am learning this kinda beginer in PHP/MYSQL and API.I don't understand the error why I am getting this.
 
This is Hybrid auth example code with my followers count code. Help
 
    <?php
  // start a new session (required for Hybridauth)
  session_start();

  // change the following paths if necessary
  $config   = dirname(__FILE__) . '/hybridauth/hybridauth/config.php';
  require_once( "hybridauth/hybridauth/Hybrid/Auth.php" );

  try{
    // create an instance for Hybridauth with the configuration file path as parameter
    $hybridauth = new Hybrid_Auth( $config );

    // try to authenticate the user with twitter,
    // user will be redirected to Twitter for authentication,
    // if he already did, then Hybridauth will ignore this step and return an instance of the adapter
    $twitter = $hybridauth->authenticate( "Twitter" );

    // get the user profile
    $twitter_user_profile = $twitter->getUserProfile();

    echo "Ohai there! U are connected with: <b>{$twitter->id}</b><br />";
    echo "As: <b>{$twitter_user_profile->displayName}</b><br />";

   // echo "As: <b>{$twitter_user_profile->following}</b><br />";

    // debug the user profile


  }
  catch( Exception $e ){
    // Display the recived error,
    // to know more please refer to Exceptions handling section on the userguide
    switch( $e->getCode() ){
      case 0 : echo "Unspecified error."; break;
      case 1 : echo "Hybriauth configuration error."; break;
      case 2 : echo "Provider not properly configured."; break;
      case 3 : echo "Unknown or disabled provider."; break;
      case 4 : echo "Missing provider application credentials."; break;
      case 5 : echo "Authentification failed. "
                  . "The user has canceled the authentication or the provider refused the connection.";
               break;
      case 6 : echo "User profile request failed. Most likely the user is not connected "
                  . "to the provider and he should authenticate again.";
               $twitter->logout();
               break;
      case 7 : echo "User not connected to the provider.";
               $twitter->logout();
               break;
      case 8 : echo "Provider does not support this feature."; break;
    }

    // well, basically your should not display this to the end user, just give him a hint and move on..
    echo "<br /><br /><b>Original error message:</b> " . $e->getMessage();
  }


require_once 'twitteroauth-master/src/twitteroauth.php';
require_once 'config.php';

require "twitteroauth-master/vendor/autoload.php";

use Abraham\TwitterOAuth\TwitterOAuth;



define("CONSUMER_KEY", "*****");
define("CONSUMER_SECRET", "****");
define("OAUTH_TOKEN", "*****");
define("OAUTH_SECRET", "******");
$username = 'kodeordie'; //Your twitter screen name or page name
$connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, OAUTH_TOKEN, OAUTH_SECRET);
$followers = $connection->get('users/show', array('screen_name' => $username));
$followers = json_decode($followers,true);
$f = $followers['followers_count'];
echo $f;
?>
 
Twitteroauth.php
 
<?php

/*
 * Abraham Williams (abraham@abrah.am) http://abrah.am
 *
 * The first PHP Library to support OAuth for Twitter's REST API.
 */

/**
 * Twitter OAuth class
 */
class TwitterOAuth {
  /* Contains the last HTTP status code returned. */
  public $http_code;
  /* Contains the last API call. */
  public $url;
  /* Set up the API root URL. */
  public $host = "https://api.twitter.com/1.1/";
  /* Set timeout default. */
  public $timeout = 30;
  /* Set connect timeout. */
  public $connecttimeout = 30; 
  /* Verify SSL Cert. */
  public $ssl_verifypeer = FALSE;
  /* Respons format. */
  public $format = 'json';
  /* Decode returned json data. */
  public $decode_json = TRUE;
  /* Contains the last HTTP headers returned. */
  public $http_info;
  /* Set the useragnet. */
  public $useragent = 'TwitterOAuth v0.2.0-beta2';
  /* Immediately retry the API call if the response was not successful. */
  //public $retry = TRUE;




  /**
   * Set API URLS
   */
  function accessTokenURL()  { return 'https://api.twitter.com/oauth/access_token'; }
  function authenticateURL() { return 'https://api.twitter.com/oauth/authenticate'; }
  function authorizeURL()    { return 'https://api.twitter.com/oauth/authorize'; }
  function requestTokenURL() { return 'https://api.twitter.com/oauth/request_token'; }

  /**
   * Debug helpers
   */
  function lastStatusCode() { return $this->http_status; }
  function lastAPICall() { return $this->last_api_call; }

  /**
   * construct TwitterOAuth object
   */
  function __construct($consumer_key, $consumer_secret, $oauth_token = NULL, $oauth_token_secret = NULL) {
    $this->sha1_method = new OAuthSignatureMethod_HMAC_SHA1();
    $this->consumer = new OAuthConsumer($consumer_key, $consumer_secret);
    if (!empty($oauth_token) && !empty($oauth_token_secret)) {
      $this->token = new OAuthConsumer($oauth_token, $oauth_token_secret);
    } else {
      $this->token = NULL;
    }
  }


  /**
   * Get a request_token from Twitter
   *
   * @returns a key/value array containing oauth_token and oauth_token_secret
   */
  function getRequestToken($oauth_callback) {
    $parameters = array();
    $parameters['oauth_callback'] = $oauth_callback; 
    $request = $this->oAuthRequest($this->requestTokenURL(), 'GET', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * Get the authorize URL
   *
   * @returns a string
   */
  function getAuthorizeURL($token, $sign_in_with_twitter = TRUE) {
    if (is_array($token)) {
      $token = $token['oauth_token'];
    }
    if (empty($sign_in_with_twitter)) {
      return $this->authorizeURL() . "?oauth_token={$token}";
    } else {
       return $this->authenticateURL() . "?oauth_token={$token}";
    }
  }

  /**
   * Exchange request token and secret for an access token and
   * secret, to sign API calls.
   *
   * @returns array("oauth_token" => "the-access-token",
   *                "oauth_token_secret" => "the-access-secret",
   *                "user_id" => "9436992",
   *                "screen_name" => "abraham")
   */
  function getAccessToken($oauth_verifier) {
    $parameters = array();
    $parameters['oauth_verifier'] = $oauth_verifier;
    $request = $this->oAuthRequest($this->accessTokenURL(), 'GET', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * One time exchange of username and password for access token and secret.
   *
   * @returns array("oauth_token" => "the-access-token",
   *                "oauth_token_secret" => "the-access-secret",
   *                "user_id" => "9436992",
   *                "screen_name" => "abraham",
   *                "x_auth_expires" => "0")
   */  
  function getXAuthToken($username, $password) {
    $parameters = array();
    $parameters['x_auth_username'] = $username;
    $parameters['x_auth_password'] = $password;
    $parameters['x_auth_mode'] = 'client_auth';
    $request = $this->oAuthRequest($this->accessTokenURL(), 'POST', $parameters);
    $token = OAuthUtil::parse_parameters($request);
    $this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
    return $token;
  }

  /**
   * GET wrapper for oAuthRequest.
   */
  function get($url, $parameters = array()) {
    $response = $this->oAuthRequest($url, 'GET', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * POST wrapper for oAuthRequest.
   */
  function post($url, $parameters = array()) {
    $response = $this->oAuthRequest($url, 'POST', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * DELETE wrapper for oAuthReqeust.
   */
  function delete($url, $parameters = array()) {
    $response = $this->oAuthRequest($url, 'DELETE', $parameters);
    if ($this->format === 'json' && $this->decode_json) {
      return json_decode($response);
    }
    return $response;
  }

  /**
   * Format and sign an OAuth / API request
   */
  function oAuthRequest($url, $method, $parameters) {
    if (strrpos($url, 'https://') !== 0 && strrpos($url, 'http://') !== 0) {
      $url = "{$this->host}{$url}.{$this->format}";
    }
    $request = OAuthRequest::from_consumer_and_token($this->consumer, $this->token, $method, $url, $parameters);
    $request->sign_request($this->sha1_method, $this->consumer, $this->token);
    switch ($method) {
    case 'GET':
      return $this->http($request->to_url(), 'GET');
    default:
      return $this->http($request->get_normalized_http_url(), $method, $request->to_postdata());
    }
  }

  /**
   * Make an HTTP request
   *
   * @return API results
   */
  function http($url, $method, $postfields = NULL) {
    $this->http_info = array();
    $ci = curl_init();
    /* Curl settings */
    curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent);
    curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout);
    curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout);
    curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ci, CURLOPT_HTTPHEADER, array('Expect:'));
    curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer);
    curl_setopt($ci, CURLOPT_HEADERFUNCTION, array($this, 'getHeader'));
    curl_setopt($ci, CURLOPT_HEADER, FALSE);

    switch ($method) {
      case 'POST':
        curl_setopt($ci, CURLOPT_POST, TRUE);
        if (!empty($postfields)) {
          curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
        }
        break;
      case 'DELETE':
        curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'DELETE');
        if (!empty($postfields)) {
          $url = "{$url}?{$postfields}";
        }
    }

    curl_setopt($ci, CURLOPT_URL, $url);
    $response = curl_exec($ci);
    $this->http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
    $this->http_info = array_merge($this->http_info, curl_getinfo($ci));
    $this->url = $url;
    curl_close ($ci);
    return $response;
  }

  /**
   * Get the header info to store.
   */
  function getHeader($ch, $header) {
    $i = strpos($header, ':');
    if (!empty($i)) {
      $key = str_replace('-', '_', strtolower(substr($header, 0, $i)));
      $value = trim(substr($header, $i + 2));
      $this->http_header[$key] = $value;
    }
    return strlen($header);
  }
}

原文：https://stackoverflow.com/questions/34806110