How to fetch new records by using limit in php mysql?

I am making an infinite scroll app in which records from database will be fetch. When the user clicks "Load More" button a function is called for retrieving data from database.

My problem is that when I am running this(below) query every Time I am getting the same records.

SELECT ArticleTitle, PreviewText, PreviewImage FROM Articles ORDER BY ID DESC LIMIT 4

regards....

Solution

You need to set a offset in hidden field.
On clicking load more, you need to get offset, calculate next batch and update offset in same hidden field
that new offset, should be passed to query.

your query looks like

SELECT ArticleTitle, PreviewText, PreviewImage 
FROM Articles 
ORDER BY ID DESC 
LIMIT 0, 4

first time offset is 0

next time it will be 5 (if you are loading 5 records every time)

then next time it will be 10 and so on