Common::objectEncode

static function objectEncode($params): string
{
	if (is_array($params))
	{
		array_walk_recursive($params, function(&$item, $key){
			if ($item instanceof MainTypeDateTime)
			{
				$item = date('c', $item->getTimestamp());
			}
		});
	}

	return CUtil::phpToJSObject($params);
}