PUT Request via CURL - php

Question

I'm trying to make an CURL PUT REQUEST, my code looks like:
public function assignProfile($token, $organizationId, $profileId)
{
//define enviroment and path
$host = enviroment;
$path = "/admin/organizations/".$organizationId."/users";
$data_string = '["'.$profileId.'"]';
// set up the curl resource
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $host.$path);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_VERBOSE, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Authorization: Bearer '.$token.'',
'Content-Length: ' . strlen($data_string)
));
echo "<br>OK<br>";
// execute the request
$output = curl_exec($ch);
// return ID for a new case
$output = json_decode($output);
var_dump($output);
}
Each part looks correct, when I var_dump $path, $host, even $data_string looks correct. However var_dump() at the end throw just NULL
I expect I'm doing something wrong or missing something really important.
May I ask you for some advise?
Thanks
EDIT:
What i do with it:
// define
define("Audavin","here is some uniqe ID");
.
.
.
$Users = new Users;
// this return Auth token ( I verify this work with echo )
$token = $Users->authorization();
// Calling method mentioned above
$Users->assignProfile($token,"here is org id", Audavin);

Answer 1

I would start by making sure the URL you're making the request to actually works and returns a valid response, you can do so by using a simple REST client (like POSTMAN chrome extension for example)
If you do get a response back, try and see if it's indeed a valid JSON, if not, that could be why you're not getting anything back from json_decode (more on return values here: http://php.net/manual/en/function.json-decode.php)
Finally, It is suggested you add curl_close($ch) to the end of your code to make sure your release the curl handle.