分页显示是一项基本的开发功能,有时候评论或者帖子太多,不可能一个页面就把所有的内容显示出来,所以需要设置每页显示的数量.这个常量pagesize设置在lib.php中.
comment.php
<?php
include('conn.php');
include('lib.php');
include('ChromePhp.php');
$aid=$_GET['a'];
//获取评论
//计算留言总数
$count_result = mysql_query("SELECT count(*) as count FROM comments where aid='$aid'");
$count_array = mysql_fetch_array($count_result);
//计算总的页数
$pagenum=ceil($count_array['count']/$pagesize);
//确定当前页数 $p 参数
$p = $_GET['p']?$_GET['p']:1;
//数据指针
$offset = ($p-1)*$pagesize;
//从评论表和用户表中提取评论和评论者的信息
$sql="select * from comments ,users where comments.aid = '$aid' and comments.uid = users.id ORDER BY addtime ASC LIMIT $offset, $pagesize";
$query=mysql_query($sql);
include('templates/comment.php')
?>
<!DOCTYPE html>
<html>
<head>
<?php header("Content-type: text/html; charset=utf-8"); ?>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.3/jquery.mobile-1.4.3.min.css">
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script src="http://code.jquery.com/mobile/1.4.3/jquery.mobile-1.4.3.min.js"></script>
<script type="text/javascript">
</script>
</head>
<body>
<div data-role="page" id="view">
<div data-role="header">
<a class="ui-btn-left ui-icon-back ui-btn ui-btn-inline ui-mini ui-corner-all ui-btn-icon-left " data-rel="back" >返回</a>
<h1><?php echo $article['title'] ?></h1>
<a <?php echo 'href="dialog.php?a=',$aid,'&touid=',$uid,'"'; ?> class="ui-btn-right ui-btn ui-btn-inline ui-mini ui-corner-all ui-btn-icon-right ui-icon-comment">评论</a>
</div>
<div role="main" class="ui-content">
<ul data-role="listview" data-inset="true" >
<li data-role="list-divider">逗论</li>
<?php
while ($comment_=mysql_fetch_array($query))
{
//Chromephp::log($comment_);
$ctime=showtime($comment_['addtime']);
echo '<li>
<img src="',$comment_['cover'],'"><p>回复 ',$toname['name'],':
',$comment_['content'],'</p>
<p>',$ctime,' </p>
<div>
<a href="dialog.php?a=',$aid,'&touid=',$comment_['uid'],'" class="ui-btn ui-btn-inline ui-mini ui-icon-comment ui-btn-right ui-btn-icon-right ">回复</a>
</div>
</li>';
}
mysql_free_result($query);
?>
</ul>
<?php if ($p <= $pagenum-1)
{//判断是否有下一页
# code...
$p += 1;
Chromephp::log($pagenum);
echo '<a class="ui-btn ui-btn-inlineui-corner-all" href="comment.php?a=',$aid,'&p=',$p,'" >更多评论</a>';
}
else if($pagenum!=1 && $pagenum!=0)
{//如果没有下一页,显示回到首页按钮
Chromephp::log($pagenum);
echo '<a class="ui-btn ui-btn-inlineui-corner-all" href="view.php?a=',$aid,'" >回到帖子首页</a>';
}
?>
</div>
</div>
</body>
</html>