php - 当前页面上产品的分页计数范围

Question

这里的分页工作正常，但除了分页之外，因为每页的限制是3，假设数据库中总共有8个项目，所以我想显示“ 在第一页上显示 1 t0 3 个 8 项，在第二页上“显示 4 到 6 个 8 项”，依此类推。请帮忙

$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 { ?>
                            <a href="products.php?cat_id=<?php echo $selectedCategoryId; ?>&page=<?php echo $i; ?>"><?php echo $i; ?></a>
                 <?php  }
                     endfor; ?> 
    <?php endif; ?>

Answer 1

尝试:

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