How to control the number of items displayed on each page in PHP array paging?

Controlling the number of items displayed on each page is very important for PHP array paging. By setting the $perPage variable, you can control the number of elements per page. The code first obtains the array, sets the number of items displayed on each page, calculates the total number of pages, obtains the current page number, and then obtains the data of the current page through array_slice() and outputs it. At the same time, paging navigation links can be generated, and links to different pages can be generated based on the total number of pages.

Controlling the number of items displayed on each page in PHP array paging

When using PHP to process large arrays, it is often necessary to display them in pages to improve user experience. Controlling the number of items displayed per page is crucial to customizing the paging process.

Code implementation

The following code demonstrates how to control the number of items displayed on each page:

<?php
// 获取数组数据
$data = ['元素1', '元素2', '元素3', '元素4', '元素5'];

// 设置每页显示条数
$perPage = 2;

// 计算总页数
$totalPages = ceil(count($data) / $perPage);

// 获取当前页码
$currentPage = isset($_GET['page']) ? (int)$_GET['page'] : 1;

// 获取当前页面的数据
$currentPageData = array_slice($data, ($currentPage - 1) * $perPage, $perPage);

// 输出当前页面的数据
foreach ($currentPageData as $item) {
    echo $item . '<br>';
}

// 生成分页导航
for ($i = 1; $i <= $totalPages; $i++) {
    echo "<a href='?page=$i'>$i</a> ";
}
?>

Practical case: display product list in pages

The following is a practical example Case demonstrating how to use the above technology to display a product list in pages:

// 获取数据库中的商品列表
$products = getProducts();

// 设置每页显示条数
$perPage = 10;

// 计算总页数
$totalPages = ceil(count($products) / $perPage);

// 获取当前页码
$currentPage = isset($_GET['page']) ? (int)$_GET['page'] : 1;

// 获取当前页面的商品数据
$currentPageProducts = array_slice($products, ($currentPage - 1) * $perPage, $perPage);

// 输出当前页面的商品列表
foreach ($currentPageProducts as $product) {
    // 输出商品名称、价格等信息
}

// 生成分页导航
for ($i = 1; $i <= $totalPages; $i++) {
    echo "<a href='?page=$i'>$i</a> ";
}

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