php curl v python request send file - php

Question

I am trying to send a file with php curl, trying to replicate the following python request:
requests.post( f'{url}/sample', data={"forced": True}, files={'sample': open(filepath, 'rb')}, verify=verify_ssl )
Below is my attempt to do the same request using php curl, I however always get an error 400, 'missing sample':
$post = array(
'files'=>array(
'sample'=> file_get_contents($_FILES['file']['tmp_name']),
),
'data'=>array(
'forced'=>TRUE,
),
);
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url.'/sample');
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($post));
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0); // Skip SSL Verification
$result = curl_exec ($ch);
curl_close ($ch);
What am I doing wrong here ?

Answer 1

That Python request appears to be multipart/form-data and not a JSON request like the PHP example.
To upload a file with curl, see the CURLFile class.
I think it should look like this:
<?php
$sample = new \CURLFile($_FILES['file']['tmp_name']);
$post = [
'forced' => true,
'sample' => $sample,
];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url.'/sample');
curl_setopt($ch, CURLOPT_POST,1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
$result = curl_exec($ch);
curl_close($ch);