API v2 with PHP

1) It looks like there are two issues with this one:

a) You should be supplying the API call parameters as JSON in the body. So, instead of:

$curl_fields = http_build_query($fields);
curl_setopt($ch, CURLOPT_POSTFIELDS,$curl_fields);

You would do something like:

curl_setopt($ch, CURLOPT_POSTFIELDS,json_encode($fields));

b) When identifying just the root folder, you need to just use the empty string "", so instead of:

"path"=> "/",

Do:

"path"=> "",

2) I'm just running this code in my terminal. I can't offer help on your development environment itself, so you'll need to investigate how to properly get the error output in your environment. For reference, the Dropbox API returns error information in the response body, which both the `var_dump($result);` and `print_r($result);` in your code are showing me.