it seems like the Json Dataset $data is retrieved, however, it cannot be parsed correctly. Can someone help?

Thanks in advance!

if (extension_loaded('curl'))
{
    $headers = array(
        'Accept: application/json',
    );
    $apikey = '###';
    $query = ('Iron+Man+1');
    $url = 'https://api.themoviedb.org/3/search/movie?api_key' . $apikey . '&query=' . $query;


    $session = curl_init();
    curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($session, CURLOPT_URL,$url);
    curl_setopt($session, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($session, CURLOPT_HEADER, 1);
    $data = curl_exec($session);
    if ($data === NULL) die ('result sets are empty');


    $header_size = curl_getinfo($session, CURLINFO_HEADER_SIZE);
    $header = substr($data, 0, $header_size);
    $body = substr($data, $header_size);

    $error_number = curl_errno($session);
    $error_message = curl_error($session);

    curl_close($session);
}
else
{
    throw new TMDbException('CURL-extension not loaded');
}

$results = json_decode($body, true);
if ($results === NULL) die('Error parsing json');
$moviesRelease = $results➞release_date;