php通用分页类

class Paginator {
    private $total; // 总记录数
    private $perPage; // 每页显示的记录数
    private $currentPage; // 当前页码
    private $totalPages; // 总页数

    public function __construct($total, $perPage = 10, $currentPage = 1) {
        $this->total = $total;
        $this->perPage = $perPage;
        $this->currentPage = $currentPage;
        $this->totalPages = ceil($total / $perPage);
    }

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

    public function getTotalPages() {
        return $this->totalPages;
    }

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

    public function getLimit() {
        return $this->perPage;
    }

    public function renderLinks($urlPattern) {
        $links = '';
        for ($i = 1; $i <= $this->totalPages; $i++) {
            $class = ($i == $this->currentPage) ? 'active' : '';
            $links .= "<a href='{$urlPattern}?page={$i}' class='{$class}'>{$i}</a> ";
        }
        return $links;
    }
}

// 使用示例
$totalRecords = 100; // 假设总记录数为100
$perPage = 10; // 每页显示10条记录
$current_page = isset($_GET['page']) ? intval($_GET['page']) : 1; // 获取当前页码

$paginator = new Paginator($totalRecords, $perPage, $current_page);

echo "当前页码: " . $Paginator->getCurrentPage() . "<br>";
echo "总页数: " . $Paginator->getTotalPages() . "<br>";
echo "偏移量: " . $Paginator->getOffset() . "<br>";
echo "每页显示数量: " . $Paginator->getLimit() . "<br>";

// 渲染分页链接
echo $Paginator->renderLinks('your_page_url_pattern');