Set UserVoice Suggestion's vote with PHP API

uservoice_vote.php

<?php 

$USERVOICE_SUBDOMAIN = '**SCRUBED**'; 
$SSO_KEY = '**SCRUBED**';
$API_KEY = '**SCRUBED**'; 
$API_SECRET = '**SCRUBED**';

// Use autoload.php of Composer to use the library and its dependencies: 
require_once 'vendor/autoload.php';

$user = '**SCRUBED**'; 
$forum_id = 1; 
$suggestion_id = 1; 
$set_votes_to = 3;

try { 
  $client = new \UserVoice\Client($USERVOICE_SUBDOMAIN, $API_KEY, $API_SECRET);

  // Now, let's login as [email protected], a regular user 
  $regular_access_token = $client->login_as($user);

  // Set votes to 3

  $regular_access_token->post("/api/v1/forums/$forum_id/suggestions/$suggestion_id/votes.json",
    array('to' => $set_votes_to )
  ); 
} catch (\UserVoice\Unauthorized $e) { 
  echo "<pre>"; 
  var_dump($e); 
  echo "</pre>"; 
} catch (\UserVoice\NotFound $e) { 
  echo "<pre>"; 
  var_dump($e); 
  echo "</pre>"; 
}

?>