As far as I can tell, there is no prebuilt solution for this, so you can just roll your own:
function array_to_object($array) {
$obj = new stdClass();
foreach ($array as $k => $v) {
if (strlen($k)) {
if (is_array($v)) {
$obj->{$k} = array_to_object($v); //RECURSION
} else {
$obj->{$k} = $v;
}
}
}
return $obj;
}