Twitteroauth callback not redirecting to correct location

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PHP

API

twitter

Hi,

Im trying to implement twitteroauth for signing in from twitter. So far I have sent the consumer key and secret to twitter and the page shows where the twitter user can authorise or deny access to the website they came from.

However, when I click authorise from api.twitter.com, the url isnt correct. the url looks like the following:

https://api.twitter.com/oauth/OAUTH_CALLBACK?oauth_token=XXXXXXXXXXXXXXXX&oauth_verifier=XXXXXXXXXXXXXXXXXXXXXXXXXX

I presume i dont want the api.twitter.com/oauth/ part in the url as i just want it to go to the callback that is specified.

Config.php:

<?php
define('CONSUMER_KEY', 'XXXXXXXXXXXXXXXXXXXXXXXXX');
define('CONSUMER_SECRET', 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX');
define('OAUTH_CALLBACK', 'www.example.co.uk/twitter/twitter_oauth.php');
?>

twitter_oauth.php:

require 'config.php';
require 'autoload.php';
use Abraham\TwitterOAuth\TwitterOAuth;

session_start();

$request_token = [];
$request_token['oauth_token'] = $_SESSION['oauth_token'];
$request_token['oauth_token_secret'] = $_SESSION['oauth_token_secret'];

$connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET);

$request_token = $connection->oauth('oauth/request_token', array('oauth_callback' => OAUTH_CALLBACK));

$_SESSION['oauth_token'] = $request_token['oauth_token'];
$_SESSION['oauth_token_secret'] = $request_token['oauth_token_secret'];

//Now we make a TwitterOAuth instance with the users access_token
$connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, $access_token['oauth_token'], $access_token['oauth_token_secret']);

// Let's get the user's info
$url = $connection->url('oauth/authorize', array('oauth_token' => $request_token['oauth_token']));

Im a newbie at this so I cant really understand whats going wrong, Ive tried fixing it for a while but I'm having no such luck, so any guidance would be much appreciated.