Unable to use Abraham Twitter API SDK - php

Question

I am using Abraham Twitter API SDK and I am facing some problem while executing index.php page.
in my config.php page my code is like this
define('CONSUMER_KEY', 'xxxxxxxxxxxxxxxxxxxxxx');
define('CONSUMER_SECRET', 'xxxxxxxxxxxxxxxxxxxxxxxxxxx');
define('OAUTH_CALLBACK', 'http://example.com/callback.php');
When, I open the index file in the browser, it redirects to connect.php
Here, if I click on Signin with PHP button, the page will redirect to redirect.php
here, my problem comes. In redirect.php page, i am including twitteroauth.php file.
The code in My redirect.php file
/* Start session and load library. */
session_start();
require_once('twitteroauth/twitteroauth.php');
require_once('config.php');
/* Build TwitterOAuth object with client credentials. */
$connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET);
/* Get temporary credentials. */
$request_token = $connection->getRequestToken(OAUTH_CALLBACK);
/* Save temporary credentials to session. */
$_SESSION['oauth_token'] = $token = $request_token['oauth_token'];
$_SESSION['oauth_token_secret'] = $request_token['oauth_token_secret'];
/* If last connection failed don't display authorization link. */
switch ($connection->http_code) {
case 200:
/* Build authorize URL and redirect user to Twitter. */
$url = $connection->getAuthorizeURL($token);
header('Location: ' . $url);
break;
default:
/* Show notification if something went wrong. */
echo 'Could not connect to Twitter. Refresh the page or try again later.';
}
In my twitteroauth.php file, the constructor is looking like this
function __construct($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;
}
}
My error i am getting in the browser is
Notice: Undefined index: oauth_token in line 80
Could not connect to Twitter. Refresh the page or try again later.
I tried in many ways to solve this problem. But I failed.
Please help me in that.
Thanks in advance.

Answer 1

I had similar error. I solved it by setting a Callback URL in my twitter application settings. http://dev.twitter.com
Login at https://dev.twitter.com
Go to https://dev.twitter.com/apps
Click 'Settings' tab
Set 'Callback URL' as something like http://example.com/twitteroauth/callback.php
Then save the settings