GetResponse API & PHP - php

Question

I am trying to make a simple CURL call to GetReponse using PHP and I must be doing something wrong. Each time I try to use my clients access token it bombs out. If I hard code my company API key into the place where I've put the xxxxx's it works fine. I'm using their docs, but I can't get it to work, any help? Btw, their docs are HORRIBLE - so bad I can't even begin to fully explain! They're filled with a billion typos... Their Docs
$url = "https://api.getresponse.com/v3/campaigns";
$headers = array();
$headers[] = "X-Auth-Token: api-key xxxxxxxxx";
$state_ch = curl_init();
curl_setopt($state_ch, CURLOPT_URL, $url);
curl_setopt($state_ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($state_ch, CURLOPT_HTTPHEADER, $headers);
$state_result = curl_exec ($state_ch);
$state_result = json_decode($state_result);
$debug = 1;
print_r($state_result);
I always get the same response:
stdClass Object
(
[httpStatus] => 401
[code] => 1014
[codeDescription] => Problem during authentication process, check headers!
[message] => Unable to authenticate request. Check credentials or authentication method details
[moreInfo] => https://apidocs.getresponse.com/en/v3/errors/1014
[context] => stdClass Object
(
[authenticationType] => auth_token
)
[uuid] => xxxxxxxxxxxxxxxxxxxxxxxxx
)
Again, if I put my company API key in the place of the xxxxxx's (which I have to get inside of their control panel) it works. Access tokens do not.
Solution:
Looks like the header needs to change to this...
$headers[] = "Authorization: Bearer xxxxxxxxxxxxxxx"

Answer 1

As I can see:
[httpStatus]401 = unauthorized
Check your API token permission

Answer 2

I'm using next code:
$headers = [];
$headers[] = "X-Auth-Token: api-key MY_API_KEY";
$ch = curl_init('https://api.getresponse.com/v3/campaigns');
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$result = curl_exec($ch);
if($result)
{
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$header = substr($result, 0, $header_size);
$body = substr($result, $header_size);
}
curl_close($ch);