PHP Multi level dimensional array

Question

According to this link here I wrote a similar answer as in bottom. Wonder if there is more generic and compact way of writing the solution?

$multi_d = array();
$read_conf = parse_ini_file($filename);
foreach( $read_conf as $keys => $value)
{
    $temp =& $multi_d;
    foreach(explode( '.', $keys) as $key)
        $temp =& $temp[$key];
    $temp = trim( $value);
}