alway throw Not authrized when we try to get access token

[ashu4code]

Hi
Here is my code.
`<?php

include_once('tripit.php');

$api_url = 'https://api.tripit.com/oauth/request_token';
$api_url_access = 'https://api.tripit.com/oauth/access_token';
$oauth_consumer_key = "";
$oauth_consumer_secret = "****";
$oauth_credential = new OAuthConsumerCredential($oauth_consumer_key, $oauth_consumer_secret);
$tripit = new TripIt($oauth_credential, $api_url);
$outhArr=$tripit->get_request_token();
$request_token=$outhArr['oauth_token'];
$request_token_secret=$outhArr['oauth_token_secret'];
$oauth_credential1 = new OAuthConsumerCredential($oauth_consumer_key, $oauth_consumer_secret, $request_token, $request_token_secret);

$tripit1 = new TripIt($oauth_credential1, $api_url_access);

$final_accesstoken=$tripit1->get_access_token();
echo '

';

print_r($final_accesstoken);

die;

?>`
always getting Not authorized in response

kindly help me