var xhr = new XMLHttpRequest();
xhr.open('POST', '/catalog/user-uploadcsv');
xhr.setRequestHeader('X-FILE-NAME', file.name);
xhr.setRequestHeader('X-CSRF-TOKEN', token);
xhr.send(file);
$dir = $_SERVER['DOCUMENT_ROOT'] . '/tmp/';
$name = $dir . $_FILES['file']['name'];
move_uploaded_file($_FILES['file']['tmp_name'], $name);
Не помогло)