用php制作简单分页(从数据库读取记录)的方法详解

$conn = mysql_connect('localhost','root','');
mysql_select_db('db_BookStore',$conn);
mysql_query("set names utf8");
if(isset($_GET['page'])) //判断是否存在page参数,获得页面值，否则取1
{
$page = intval($_GET['page']);
}
else
{
$page = 1;
}
$page_size = 2; //最大记录条数
$sql = "SELECT count(*) as amount FROM tb_BookInfo";
$result = mysql_query($sql);
$row = mysql_fetch_array($result);
//计算总页数
$amount = $row['amount'];
if($amount)
{
if($amount < $page_size){$page_count = 1;}
if($amount % $page_size){$page_count = (int)($amount / $page_size) + 1; }
else{$page_count = $amount / $page_size;}
}
else
{
$page_count = 0;
}
//翻页链接
$page_string = "";
if($page == 1)
{
$page_string .= "首页 | 上一页";
}
else
{
$page_string .= "首页 | 上一页";
}
$page_string .= "| $page |";
if($page == $page_count)
{
$page_string .= "下一页 | 尾页";
}
else
{
$page_string .= "下一页 | 尾页";
}
　　 $sql = "select * from table order by id desc limit ". ($page-1)*$page_size .",$page_size";
　 　$result = mysql_query($sql);
　　　　　　 while ( $row = mysql_fetch_row($result) ){
　　　　　　　　　$rowset[] = $row;
　　　　　　　}
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