PHP curl POST request with JSON response

Question

I'm trying to send post data and receive an SID from an api(qbittorrent) to send with a get request later. I'm currently stuck with an OK response but the json is NULL. Here's my code:

<?php
  $ch = curl_init();
  $fields = array( 'username'=>'Admin','password'=>'mypassword');
  $postvars = '';
  foreach($fields as $key=>$value) {
    $postvars .= $key . "=" . $value . "&";
  }
  $postvars = rtrim($postvars, '&');
  $url = "https://192.123.123.123:8080/login";
  curl_setopt($ch,CURLOPT_URL,$url);
  curl_setopt($ch,CURLOPT_POST, 1);         
  curl_setopt($ch,CURLOPT_SSL_VERIFYHOST, 0);
  curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, 0);
  $headers= array('Accept: application/json','application/x-www-form-urlencoded'); 
  curl_setopt($ch,CURLOPT_HTTPHEADER, $headers);
  curl_setopt($ch,CURLOPT_FOLLOWLOCATION, 1);
  curl_setopt($ch,CURLOPT_POSTFIELDS,$postvars);
  curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch,CURLOPT_CONNECTTIMEOUT ,3);
  curl_setopt($ch,CURLOPT_TIMEOUT, 20);
  $response = curl_exec($ch);
  var_dump(json_decode($response, true));
  print "curl response is:" . $response;
  curl_close ($ch);
?>

You can see the API documentaiton here https://github.com/qbittorrent/qBittorrent/wiki/WebUI-API-Documentation#authorization

I was able to get the json using powershell as simply as :

$prms = @{username="Admin";password="mypassword"}
$res = Invoke-WebRequest https://192.123.123.123:8080/login -Method POST -Body prms -UseBasicParsing

but I'm unable to do so with php! If you also feel like heading me right for the get request using the SID as a cookie, i'll be more than welcome :)

Answer 1

The problem was lying there, changed:

curl_setopt($ch,CURLOPT_HTTPHEADER, $headers);

to

curl_setopt($ch, CURLOPT_HEADER, true);

And I got my json response!