Generated access token

Hello Gregory, many thanks for your help, it worked seamlessly. If you could also look into this code, as I'm getting an "Internal Server Error" when trying to upload a file (png) from a url:

$headers = array();
$headers[] = 'Authorization: Bearer IFwO9iVNUF...';
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_URL, 'https://api.dropbox.com/1/save_url/auto/downloaded.png');
curl_setopt($ch, CURLOPT_POSTFIELDS, "url=\"http://2.bp.blogspot.com/-5BRZLo7rynA/UzLTXxHNO5I/AAAAAAAAAOE/43_jWGpYcNc/s1600/bmw_logo_vector_by_celinah006-d66yn5l.png\");
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$out = curl_exec($ch);

Thank you.