CFile::ConvertFilesToPost

static function ConvertFilesToPost($source, &$target, $field=false)
{
	if($field === false)
	{
		foreach($source as $field => $sub_source)
		{
			self::ConvertFilesToPost($sub_source, $target, $field);
		}
	}
	else
	{
		foreach($source as $id => $sub_source)
		{
			if(!array_key_exists($id, $target))
				$target[$id] = array();
			if(is_array($sub_source))
				self::ConvertFilesToPost($sub_source, $target[$id], $field);
			else
				$target[$id][$field] = $sub_source;
		}
	}
}