Oh, I see. One way is to do the ordering in PHP with [man]sort/man or even [man]natsort/man after placing the result rows into an array. I am not too sure how to do it all in one query, though a subquery is one option, in my opinion. It might be something like this:
SELECT * FROM
(SELECT LAN_details.image1, LAN_details.name, LAN_details.telephone
FROM LAN_details, LAN_detailcategory, LAN_category
WHERE LAN_details.id=LAN_detailcategory.detailid
AND LAN_category.id=LAN_detailcategory.categoryid
AND LAN_category.name='bars'
ORDER BY LAN_details.id LIMIT 5, $num)
ORDER BY LAN_details.name