file_put_contents fails with stream wrapper

include("HTTP/WebDAV/Client.php");

$remote = "webdavs://{$user}:{$pass}@{$host}/{$remotePath}";

$content = file_get_contents(realpath($local));
if ($content !== FALSE) {
    #$handler = fopen($remote, 'w');
    #fwrite($handler, $content);
    #fclose($handler);
    file_put_contents($remote, $content);
}