Get last tweet Twitter api

Question

I try to show the last tweet from a specif user, using the Twitter API. When I try to echo the first result I get an empty page. When I echo my JSON data is see this.

I have the following PHP script:

<?php

require "Twitteroauth/autoload.php";

use Abraham\TwitterOAuth\TwitterOAuth;

$consumer_key = "";
$consumer_secret = "";
$access_token = "";
$access_token_secret = "";


$connection = new TwitterOAuth($consumer_key, $consumer_secret, $access_token, $access_token_secret);
$content = $connection->get("account/verify_credentials");

$statuses = $connection->get("statuses/user_timeline", ["screen_name" => "NS_online"], ["lang" => "NL"]);
//var_dump($statuses);
// get your json as an associative array
$jsonArray = json_decode($statuses, true);

print_r($jsonArray);

$test = $jsonArray[0]->created_at;

echo $test;

?>