<div id="content"> <h2>留言列表</h2> <table border="1px" cellspacing="0"> <tr> <th>序号</th> <th>标题</th> <th>作者</th> <th>时间</th> <th>操作</th> </tr> <?php require_once 'dbUtil.php'; $conn = PdoFactory::getConn(); $page_size = 5; $count = PdoFactory::getCount($conn, 'msgs')[0]; $pageMaxNumber = ceil((double) ($count['num'] / $page_size)); //var_dump($pageMaxNumber); //定义分页查询的变量信息 $page = isset($_GET['page']) ? $_GET['page'] : 1; //var_dump($page); //page参数健壮性处理 if ($page < 1) { $page = 1; } elseif ($page > $pageMaxNumber) { $page = 1; } $lastPage = $page - 1; $nextPage = $page + 1; $page_begin = ($page - 1) * $page_size; //$page = 1;