pagination count range of products on current page - php

Question

The pagination here works fine, but addition to pagination, as the limit per page is 3 suppose total 8 items in database so i want to display "
showing 1 t0 3 item of 8" on page one, "showing 4 to 6 items of 8" on page two and so on. please help
$recordsLimit = 3;
$page = isset($_GET['page']) ? intval($_GET['page']): 1;
$totalProducts = countProducts($selectedCategoryId);
$totalPages = ceil($totalProducts / $recordsLimit);
$pageNumber = $recordsLimit * ($page - 1);
$products = getProductsByCatId($selectedCategoryId, $pageNumber, $recordsLimit);
<?php if($totalProducts > $recordsLimit) : ?>
<div class="pagination">
<span>Page <?php echo $page.' of '.$totalPages; ?></span>
<?php for($i=1; $i <= $totalPages; $i++) :
if($i == $page) { ?>
<strong><?php echo $i; ?></strong>
<?php } else { ?>
<?php echo $i; ?>
<?php }
endfor; ?>
<?php endif; ?>

Answer 1

Try:
echo "Showing ".( $page == 1 ? 1 : ($page -1) * $recordsLimit +1 )." to ".($page * $recordsLimit)." item of ".$totalProducts;

Answer 2

Simply use this:
<?php $firstNum = (($page-1)*$recordsLimit+1) ?>
showing <?php echo $firstNum; ?> to <?php echo $firstNum+2;?> items of <?php echo $totalProducts;?>

Answer 3

To fix the problem with Tom's code where the last page has an incorrect "to" number I added an offset variable. For this to work the $recordsLimit variable has to match the "showposts" argument in the query. The OP did not show his query so I'm showing the one I used.
$total_results = $wp_query->found_posts;
$recordsLimit = 10;
$args['post_type'] = 'listings';
$args['showposts'] = $recordsLimit;
$args['paged'] = $paged;
$wp_query = new WP_Query($args);
$page = (get_query_var('paged')) ? get_query_var('paged') : 1;
$countoffset = ($page * $recordsLimit)-($total_results);
$countfrom = ( $page == 1 ? 1 : ($page -1) * $recordsLimit +1 );
$countto = ($page * $recordsLimit);
if(($total_results - $countfrom) < $recordsLimit) {$countto = ($countto - $countoffset);}
echo 'Showing '.$countfrom.' to '.$countto.' of '.$total_results.' total results';