<?php        $localhost = "localhost";    $username = "root";    $password = "root";    $db = "test";         //信息        $pagesize = 5;                                  $conn = mysql_connect($localhost,$username,$password); //链接数据库            if(!$conn){            echo "数据库链接失败".mysql_error();        }        mysql_query("SET NAMES 'UTF8'");    //编码转化    $db_select = mysql_select_db($db);  //选择表                                        //查询记录总数    $total_sql = "select COUNT(*) from page";    $total_result = mysql_query($total_sql);    $total_row_arr = mysql_fetch_row($total_result);    $total_row = $total_row_arr[0];         //总条数    //总页数    $total = ceil($total_row / $pagesize);        //当前页数    $page = @$_GET['p'] ? $_GET['p'] : 1;         //limit 下限    $offset = ($page - 1)*$pagesize;            $sql = "select * from page order by id limit {$offset},{$pagesize}";        $result = mysql_query($sql);        echo "<p>PHP分页代码的小模块</p>";    echo "<table border=1 cellspacing=0 WIDTH=60% align=center>";    echo "<tr><td>ID</td><td>NAME</td></tr>";        while($row = mysql_fetch_assoc($result)){        $id = $row['id'];        $name = $row['name'];        echo "<tr><td>".$id."</td><td>".$name."</td></tr>";    }        echo "</table>";    //上一页 、下一页        $pageprev = $page -1 ;        if($page > $total){            $pagenext = $total;        } else{            $pagenext = $page +1;        }        // 做链接 跳转；        echo "<h3> <a href='page.php?p={$pageprev}'>上一页</a> 丨<a href='page.php?p={$pagenext}'>下一页</a></h3>";                mysql_free_result($result);    mysql_close($conn);?>