<?php
$ch = curl_init('https://rediafile.com/cloud/api/v2/file/upload');
$data = [
'access_token' => 'demo_token_abc123',
'account_id' => 'acc_demo_001',
'folder_id' => '0',
'upload_file' => new CURLFile('report.pdf'),
];
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$resp = curl_exec($ch);
curl_close($ch);
echo $resp;