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用php制作简单分页(从数据库读取记录)的方法详解

WBOY
Release: 2016-06-13 11:52:45
Original
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      PHP新手,一直想做一下分页都给忘了,今天有幸被提醒所以网上搜了一下。有些写的看不懂也没怎么去看。最后找到一个比较简单的。

  大致的思想就是:

  1.设置每页要显示的最大记录数。

  2.计算出页面总数

  3.当前页面跟总页面数比较改变连接的状态

  4.用limit控制从数据库中读取记录

下面是代码:

复制代码 代码如下:


$conn = mysql_connect('localhost','root','');
            mysql_select_db('db_BookStore',$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($amount                 if($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;
       }
?>


这个只是非常简单的一种方法,各位路人大牛,若有其他类型的方法,敬请告之一下。
source:php.cn
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