Manager::detectItemChanged

static function detectItemChanged(array $itemThen, array $itemNow)
{
	$changed = false;
	foreach($itemNow as $fld => $value)
	{
		if(!isset($itemThen[$fld]) || ((string) $itemThen[$fld] != (string) $itemNow[$fld]))
		{
			$changed = true;
			break;
		}
	}

	return $changed;
}