Could not authenticate temporary credentials for Twitter Oauth - php

Question

I am able to get temporary credentials and able to get oauth token, but when I do use the returned token to fetch user details, I'm unable to fetch it thus the error.
I am using thephpleague/oauth1-client package and created a simple controller where I followed their Twitter Sample. From this, I am getting this error
League\OAuth1\Client\Credentials\CredentialsException: Received HTTP status code [401] with message "{"errors":[{"code":32,"message":"Could not authenticate you."}]}" when getting temporary credentials. in /var/www/html/PF.Site/Apps/TipsMarketplace/vendor/league/oauth1-client/src/Client/Server/Server.php:418
and here is the sample code I've created.
$server = new Twitter(array(
'identifier' => 'my-identifier',
'secret' => 'my-secret',
'callback_uri' => "http://localhost:8080/twitter/auth",
));
session_start();
if (isset($_GET['user'])) {
$tokenCredentials = unserialize($_SESSION['token_credentials']);
$user = $server->getUserDetails($tokenCredentials);
var_dump($user);
} elseif (isset($_GET['oauth_token']) && isset($_GET['oauth_verifier'])) {
$temporaryCredentials = unserialize($_SESSION['temporary_credentials']);
$tokenCredentials = $server->getTokenCredentials($temporaryCredentials, $_GET['oauth_token'], $_GET['oauth_verifier']);
unset($_SESSION['temporary_credentials']);
$_SESSION['token_credentials'] = serialize($tokenCredentials);
session_write_close();
header("Location: http://{$_SERVER['HTTP_HOST']}/twitter/auth?user=user");
exit;
} elseif (isset($_GET['denied'])) {
echo 'Hey! You denied the client access to your Twitter account!';
}
$temporaryCredentials = $server->getTemporaryCredentials();
$_SESSION['temporary_credentials'] = serialize($temporaryCredentials);
session_write_close();
$server->authorize($temporaryCredentials);

Answer 1

It turns out that I did not followed the 3-legged Oauth by twitter which is also indicated in the sample from the library.
In my code above, I've skipped the $server->authorize($temporaryCredentials) wherein it will show the Authorization Page/Login page of twitter.