Display of the first and last pages of paging developed by PHP+Mysql

<html>
<head>
    <meta http-equiv="CONTENT-TYPE" content="text/html;">
</head>
<body>
<?php
/** 1.传入页面 **/
$page = $_GET['p'];
/** 2.根据页面取出数据：php->mysql **/
$host = "localhost";
$username = 'root';
$password = '123456789';
$db = 'bbs2';
$PageSize=5;
//连接数据库
$conn = mysql_connect($host, $username, $password);
if(!$conn){
    echo "数据库连接失败";
    exit;
}
//选择所要操作的数据库
mysql_select_db($db);
//设置数据库编码格式
mysql_query('SET NAMES UTF8');
//编写sql获取分页数据：SELECT * FROM 表名 LIMIT 起始位置 , 显示条数
$sql = "SELECT*FROM test LIMIT ".($page-1)*$PageSize .",$PageSize";
if(!$sql){
    echo "取出不成功";
};
//把sql语句传送到数据库
$result = mysql_query($sql);
//处理我们的数据
echo "<table border=1 cellspacing=0 width=15% >";
echo "<tr><td>ID</td><td>名字</td><td>性别</td></tr>";
while($row = mysql_fetch_assoc($result)){
    echo "<tr>";
    echo "<td>{$row['id']}</td>";
    echo "<td>{$row['name']}</td>";
    echo "<td>{$row['sex']}</td>";
    echo "<tr>";
}
//释放结果
mysql_free_result($result);
//获取数据总数
$to_sql="SELECT COUNT(*)FROM test";
$to_result=mysql_fetch_array(mysql_query($to_sql));
$to=$to_result[0];
//计算页数
$to_pages=ceil($to/$PageSize);
mysql_close($conn);
/** 3.显示数据+分页条 **/
$page_banner="";
//计算偏移量
if($page>1){
    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=1'>首页</a>";
    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page-1)."'>上一页</a>";
}
if ($page<$to_pages){
    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page+1)."'>下一页</a>";
    $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($to_pages)."'>尾页</a>";
}
$page_banner.="共{$to_pages}页";
echo $page_banner;
?>
</body>
</html>

QQ截图20161026152622.png

By adding the first and last pages, it makes it easier to jump to the paging bar

Code explanation:

if($page>1){
     $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=1'>首页</a>";
     $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page-1)."'>上一页</a>";
 }

Displayed when $page>1 Home page and previous page

if ($page<$to_pages){
     $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page+1)."'>下一页</a>";
     $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($to_pages)."'>尾页</a>";
 }

When the number of pages is less than the total number of pages, display the next and last page

$page_banner.="共{$to_pages}页";
 echo $page_banner;

Output the total number of pages.

Continuing Learning

new file

<html> <head> <meta http-equiv="CONTENT-TYPE" content="text/html;"> </head> <body> <?php /** 1.传入页面 **/ $page = $_GET['p']; /** 2.根据页面取出数据：php->mysql **/ $host = "localhost"; $username = 'root'; $password = '123456789'; $db = 'bbs2'; $PageSize=5; //连接数据库 $conn = mysql_connect($host, $username, $password); if(!$conn){ // echo "数据库连接失败"; exit; } //选择所要操作的数据库 mysql_select_db($db); //设置数据库编码格式 mysql_query('SET NAMES UTF8'); //编写sql获取分页数据：SELECT * FROM 表名 LIMIT 起始位置 , 显示条数 $sql = "SELECT*FROM test LIMIT ".($page-1)*$PageSize .",$PageSize"; if(!$sql){ echo "取出不成功"; }; //把sql语句传送到数据库 $result = mysql_query($sql); //处理我们的数据 echo "<table border=1 cellspacing=0 width=15% >"; echo "<tr><td>ID</td><td>名字</td><td>性别</td></tr>"; while($row = mysql_fetch_assoc($result)){ echo "<tr>"; echo "<td>{$row['id']}</td>"; echo "<td>{$row['name']}</td>"; echo "<td>{$row['sex']}</td>"; echo "<tr>"; } //释放结果 mysql_free_result($result); //获取数据总数 $to_sql="SELECT COUNT(*)FROM test"; $to_result=mysql_fetch_array(mysql_query($to_sql)); $to=$to_result[0]; //计算页数 $to_pages=ceil($to/$PageSize); mysql_close($conn); /** 3.显示数据+分页条 **/ $page_banner=""; //计算偏移量 if($page>1){ $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=1'>首页</a>"; $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page-1)."'>上一页</a>"; } if ($page<$to_pages){ $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($page+1)."'>下一页</a>"; $page_banner.="<a href='".$_SERVER['PHP_SELF']."?p=".($to_pages)."'>尾页</a>"; } $page_banner.="共{$to_pages}页"; echo $page_banner; ?> </body> </html>

submit Reset Code

Automatic operation

Display of the first and last pages of paging developed by PHP+Mysql

ElementaryImperial CMS enterprise imitation website tutorial

ElementaryNewbies with zero foundation in WordPress build personal blogs and corporate websites

ElementaryUltimate CMS zero-based website building instruction video

ElementaryFront-end project-Shangyou [HTML/CSS/JS technology comprehensive practice]

IntermediateVue3.0 from 0 to build a universal backend management system project practice

ElementaryZero-based front-end course [Vue advanced learning and practical application]

ElementaryWEB front-end tutorial [HTML5+CSS3+JS]

ElementaryQuick introduction to apipost

IntermediateVue3+TypeScript practical tutorial-enterprise-level project practice

ElementaryLet's briefly talk about starting a business in PHP

IntermediateVUE e-commerce project (front-end & back-end dual project actual combat)

ElementaryApipost practical application [api, interface, automated testing, mock]