BlogUser::getPostAuthorsIdsByBlogId

static function getPostAuthorsIdsByBlogId($blogId)
{
	if (!$blogId)
		throw new ArgumentNullException('blog ID');
	$blogId = intval($blogId);
	$result = array();
	
	$resPost = CBlogPost::GetList(array(), array("BLOG_ID" => $blogId), false, false, array("AUTHOR_ID"));
	while ($post = $resPost->Fetch())
		if ($post["AUTHOR_ID"])
			$result[$post["AUTHOR_ID"]] = $post["AUTHOR_ID"];
	
	return $result;
}