分頁顯示是一項基本的開發功能,有時候評論或者帖子太多,不可能一個頁面就把所有的內容顯示出來,所以需要設置每頁顯示的數量.這個常量pagesize設置在lib.php中.
comment.php
<?php
include('conn.php');
include('lib.php');
include('ChromePhp.php');
$aid=$_GET['a'];
//獲取評論
//計算留言總數
$count_result = mysql_query("SELECT count(*) as count FROM comments where aid='$aid'");
$count_array = mysql_fetch_array($count_result);
//計算總的頁數
$pagenum=ceil($count_array['count']/$pagesize);
//確定當前頁數 $p 參數
$p = $_GET['p']?$_GET['p']:1;
//數據指針
$offset = ($p-1)*$pagesize;
//從評論表和用戶表中提取評論和評論者的信息
$sql="select * from comments ,users where comments.aid = '$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=',$uid,'"'; ?> class="ui-btn-right ui-btn ui-btn-inline ui-mini ui-corner-all ui-btn-icon-right ui-icon-comment">評論</a>
</div>
<div role="main" class="ui-content">
<ul data-role="listview" data-inset="true" >
<li data-role="list-divider">逗論</li>
<?php
while ($comment_=mysql_fetch_array($query))
{
//Chromephp::log($comment_);
$ctime=showtime($comment_['addtime']);
echo '<li>
<img src="',$comment_['cover'],'"><p>回覆 ',$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 ">回覆</a>
</div>
</li>';
}
mysql_free_result($query);
?>
</ul>
<?php if ($p <= $pagenum-1)
{//判斷是否有下一頁
# code...
$p += 1;
Chromephp::log($pagenum);
echo '<a class="ui-btn ui-btn-inlineui-corner-all" href="comment.php?a=',$aid,'&p=',$p,'" >更多評論</a>';
}
else if($pagenum!=1 && $pagenum!=0)
{//如果沒有下一頁,顯示回到首頁按鈕
Chromephp::log($pagenum);
echo '<a class="ui-btn ui-btn-inlineui-corner-all" href="view.php?a=',$aid,'" >回到帖子首頁</a>';
}
?>
</div>
</div>
</body>
</html>