create folder with microsoft graph api

I’m try to create folder, using microsoft graph API. In microsoft graph explorer, all work fine, but my php code return an error:

$name = 'newFolder'; $access_token = '123..';
$link = 'https://graph.microsoft.com/v1.0/me/drive/root/children';

$data = array(
    "name" => $name,
    "folder" => array()
);

$curl=curl_init();
curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl,CURLOPT_URL,$link);
curl_setopt($curl,CURLOPT_CUSTOMREQUEST,'POST');
curl_setopt($curl,CURLOPT_HEADER,false);
curl_setopt($curl,CURLOPT_HTTPHEADER, array('Authorization: Bearer '.$access_token, 'Content-Type: application/json'));
curl_setopt($curl,CURLOPT_POSTFIELDS, $data);
curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,0);
curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,0);

$out = curl_exec($curl);
$codeCurl = curl_getinfo($curl,CURLINFO_HTTP_CODE);
curl_close($curl);

this is response of ‘$out’: 400 BadRequest, Unable to read JSON request payload. Please ensure Content-Type header is set and payload is of valid JSON format. I’m can’t understand, what wrong? json data is correct, headers too..

Answer

The microsoft graph API documentation shows this example request for create folder:

POST /me/drive/root/children
Content-Type: application/json

{
  "name": "New Folder",
  "folder": { },
  "@microsoft.graph.conflictBehavior": "rename"
}

To get this part of the request : "folder": { } you could either put "folder" => new stdClass() in your $data array or keep this "folder" => array() and use json_encode($data, JSON_FORCE_OBJECT). If you use JSON_FORCE_OBJECT, all arrays will be encoded as objects. I had the same problem, but error in the response was a bit different: Property folder in payload has a value that does not match schema. I am using "folder" => new stdClass() and it works fine.