php 分页类

class Paginator {
    private $totalItems;
    private $itemsPerPage;
    private $currentPage;

    public function __construct($totalItems, $itemsPerPage, $currentPage = 1) {
        $this->totalItems = $totalItems;
        $this->itemsPerPage = $itemsPerPage;
        $this->currentPage = $currentPage;
    }

    public function getTotalPages() {
        return ceil($this->totalItems / $this->itemsPerPage);
    }

    public function getCurrentPage() {
        return $this->currentPage;
    }

    public function getOffset() {
        return ($this->currentPage - 1) * $this->itemsPerPage;
    }

    public function renderLinks() {
        $links = '';
        for ($i = 1; $i <= $this->getTotalPages(); $i++) {
            if ($i == $this->currentPage) {
                $links .= "<strong>$i</strong> ";
            } else {
                $links .= "<a href='?page=$i'>$i</a> ";
            }
        }
        return $links;
    }
}

// 使用示例
$totalItems = 100; // 总数据条数
$itemsPerPage = 10; // 每页显示的数据条数
$currentPage = isset($_GET['page']) ? intval($_GET['page']) : 1; // 当前页码

$paginator = new Paginator($totalItems, $itemsPerPage, $currentPage);

echo "当前页码: " . $Paginator->getCurrentPage() . "<br>";
echo "总页数: " . $Paginator->getTotalPages() . "<br>";
echo "分页链接: " . $Paginator->renderLinks() . "<br>";

// 数据库查询示例
$sql = "SELECT * FROM your_table LIMIT " . $Paginator->getOffset() . ", " . $Paginator->itemsPerPage;
$result = mysqli_query($conn, $sql);
// 处理查询结果...