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Error to login via twitter (modx)
$code = $tmhOAuth->request('POST', $tmhOAuth->url('oauth/access_token', ''), array(
    'oauth_verifier' => $_REQUEST['oauth_verifier']
  ));

  if ($code == 200) {

<?php

require MODX_CORE_PATH.'components/twPost/tmhOAuth.php';
require MODX_CORE_PATH.'components/twPost/tmhUtilities.php';

$tmhOAuth = new tmhOAuth(array(
  'consumer_key'    => '*************',
  'consumer_secret' => '**************',
));

$contexts = empty($contexts) ? array($modx->context->get('key')) : explode(',', $contexts);

if(isset($_SESSION['access_token']) ){
    $tmhOAuth->config['user_token']  = $_SESSION['access_token']['oauth_token'];
    $tmhOAuth->config['user_secret'] = $_SESSION['access_token']['oauth_token_secret'];

    $code = $tmhOAuth->request('GET', $tmhOAuth->url('1/account/verify_credentials'));
    if ($code == 200) {
        $user_data = json_decode($tmhOAuth->response['response']);
        $moduser = $modx->getObject('modUser',  array('remote_key:=' => $user_data->id, 'remote_key:!=' => null));
        if(empty($moduser)){
            $homet = '';
            if(!empty($user_data->location)){
                $hometownAr = explode(',',$user_data->location);
                $homet = $hometownAr[0];
            }

            $moduser = $modx->newObject('modUser');
            $moduser->set('username', $user_data->screen_name);
            $moduser->set('active', true);
            $moduser->set('remote_key', $user_data->id);
            $moduser->set('remote_data', (array)$user_data);


            $profile = $modx->newObject('modUserProfile');
            $profile->set('email', $user_data->screen_name.'@twitter.com');
            $profile->set('fullname', $user_data->name);
            $profile->set('city', $homet);
            $profile->set('photo', $user_data->profile_image_url);

            $moduser->addOne($profile, 'Profile');
            $saved = $moduser->save();
        }

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

        $moduser->set('active',1);
        $moduser->save();

        foreach ($contexts as $context) {
            $moduser->addSessionContext($context);
        }

        $url = $_SESSION['back_url_login'];
        if(empty($url)) $url = "/";
        unset($_SESSION['back_url_login']);
        $modx->sendRedirect($url);
    } else {
        $_SESSION['error_upform'] = 'Login error. Please try again. Main';
        $modx->sendRedirect('/');
    }

} elseif (isset($_REQUEST['oauth_verifier'])) {
  $tmhOAuth->config['user_token']  = $_SESSION['oauth']['oauth_token'];
  $tmhOAuth->config['user_secret'] = $_SESSION['oauth']['oauth_token_secret'];

  $code = $tmhOAuth->request('POST', $tmhOAuth->url('oauth/access_token', ''), array(
    'oauth_verifier' => $_REQUEST['oauth_verifier']
  ));

  if ($code == 200) {
    $_SESSION['access_token'] = $tmhOAuth->extract_params($tmhOAuth->response['response']);
    unset($_SESSION['oauth']);
    $modx->sendRedirect('/?id=12');
  } else {
        $_SESSION['error_upform'] = 'Login error. Please try again. verifier. | '.$tmhOAuth->response['response'];
        $modx->sendRedirect('/');
  }
// start the OAuth dance
}elseif ( isset($_REQUEST['auth']) && $_REQUEST['auth']=='1' ) {
    $_SESSION['back_url_login'] = $_SERVER['HTTP_REFERER'];

    $params = array(
        'oauth_callback'     => '/?id=12'
    );

    $params['x_auth_access_type'] = 'write';
    //$params['x_auth_access_type'] = 'read';

    $code = $tmhOAuth->request('POST', $tmhOAuth->url('oauth/request_token', ''), $params);

    if ($code == 200) {
        $_SESSION['oauth'] = $tmhOAuth->extract_params($tmhOAuth->response['response']);
        $method = 'authorize'; $force  = '';
        $authurl = $tmhOAuth->url("oauth/{$method}", '') .  "?oauth_token={$_SESSION['oauth']['oauth_token']}{$force}";
        $modx->sendRedirect($authurl);
  } else {
        $_SESSION['error_upform'] = 'Login error. Please try again.';
        $modx->sendRedirect('/');
  }
}