{ $this->i = $_GET['n'] - 1; if ($this->i <= 0) { echo ""; } else { echo "<a href= 'paging_class.php?n={$this->i}'>上一页</a>"; } } function finalPage() { if ($_GET['n'] == $this->a) { } else { echo "<a href= 'paging_class.php?n={$this->a}'>尾页</a>"; } } } $dsn = "mysql:host=localhost;dbname=test"; $username = '******'; $password = ''; $paging = new Paging($dsn, $password, $username); $mysql = "SELECT count(*) from paging"; $paging->getRow($mysql); $paging->getAll(); $paging->getAllpage(); $paging->firstPage(); $paging->showPage(); $paging->showComment(); $paging->lastPage(); $paging->nextPage(); $paging->finalPage();