Question

I know this sounds confusing:
I have just built some basic prev/next pagination for mysql and i wanted to know, if the last page of my rows is .php?page=5 and someone puts .php?page=263 then i want to redirect them to .php?page=5

Any ideas on how to do this.. the info i currently have is, how many rows are returned after the LIMIT so if it was .php?page=263 then it would be 0
I also have the total number of rows in my database… the LIMIT is 10 🙂

Thanks in advance!!

Answer 1

If you already have the total number of rows, and you know how many rows you will be displaying per page, then you can calculate the last page like so:

$totalPages = ceil( $rows / $perPage );

Then, simply restrict the current page to a reasonable limit:

$page = isset( $_GET['page'] ) ? (int) $_GET['page'] : 1;
$page = min( max( $page, 1 ), $totalPages );