We have written the HTML page, paging, and display code earlier. Now we need to integrate them into one page, so that it meets our original intention. The complete code is as follows
Complete code
<?php
session_start();
header("content-type:text/html;charset=utf-8");
$page=isset($_GET['page']) ?$_GET['page'] :1 ;//接收页码
$page=!empty($page) ? $page :1;
$conn=mysqli_connect("localhost","root","root","Ressage");
mysqli_set_charset($conn,'utf8'); //设定字符集
$table_name="ressage_user";//查取表名设置
$perpage=5;//每页显示的数据个数
//最大页数和总记录数
$total_sql="select count(*) from $table_name";
$total_result =mysqli_query($conn,$total_sql);
$total_row=mysqli_fetch_row($total_result);
$total = $total_row[0];//获取最大页码数
$total_page = ceil($total/$perpage);//向上整数
//临界点
$page=$page>$total_page ? $total_page:$page;//当下一页数大于最大页数时的情况
//分页设置初始化
$start=($page-1)*$perpage;
$sql= "select * from ressage_user order by id desc limit $start ,$perpage";
$result=mysqli_query($conn,$sql);
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>留言板</title>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js">
</script>
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
<meta name="format-detection" content="telephone=no" />
<style>
/*#left{*/
/*width: 25%;*/
/*float: left;*/
/*}*/
/*#center{*/
/*width: 42%;*/
/*float: left;*/
/*}*/
/*#right{*/
/*width: 32%;*/
/*float: left;*/
/*}*/
.right{
margin-left: 140px;
}
.button{
background-color: rgba(230, 228, 236, 0.93); /* Green */
border: none;
color: #110c0f;
padding: 10px 70px;
text-align: center;
display: inline-block;
font-size: 16px;
margin-left: 20px;
cursor: pointer;
}
form{
font-size: 17px;
}
button{
background-color: rgba(249, 247, 255, 0);
border: none;
font-size: 16px;
color: #551a8b;
cursor: pointer;
}
a{
text-decoration:none;
}
table{
width: 360px;
height: 100px;
}
</style>
<script>
$(document).ready(function(){
$("button").click(function(){
$("form").toggle();
});
});
function foo(){
if(myform.name.value=="")
{
alert("请输入你的姓名");
myform.name.focus();
return false;
}
if (myform.content.value=="")
{
alert("留言内容不能为空");
myform.content.focus();
return false;
}
if(myform.vcode.value==""){
alert('验证码不能为空');
myform.vcode.focus();
return false;
}
}
</script>
</head>
<body>
<div id="left">
<img src="https://img.php.cn/upload/image/460/147/285/1477727203382106.jpg" width="370px">
</div>
<div id="center">
<h1>留言内容</h1>
<p>
<?
if($result==null){
echo"暂时没有留言";
} ?>
</p>
<?php
while($row=mysqli_fetch_array($result)){
?>
<table border="1" cellspacing="0">
<tr>
<td>姓名：<?php echo $row['name']?></td>
<td style="text-align: center">留言时间:<?php echo $row['ressage_time']?></td>
<td><a href="ressage_delete.php?id=<?php echo $row['id']?>" >删除</a> </td>
</tr>
<tr>
<td colspan="3">你的留言:<?php echo $row['content']?></td>
</tr>
</table>
<?php
}?>
<div id="baner" style="margin-top: 20px">
<a href="<?php
echo "$_SERVER[PHP_SELF]?page=1"
?>">首页</a>
<a href="<?php
echo "$_SERVER[PHP_SELF]?page=".($page-1)
?>">上一页</a>
<!-- 显示123456等页码按钮-->
<?php
for($i=1;$i<=$total_page;$i++){
if($i==$page){//当前页为显示页时加背景颜色
echo "<a style='padding: 5px 5px;background: #000;color: #FFF' href='$_SERVER[PHP_SELF]?page=$i'>$i</a>";
}else{
echo "<a style='padding: 5px 5px' href='$_SERVER[PHP_SELF]?page=$i'>$i</a>";
}
}
?>
<a href="<?php
echo "$_SERVER[PHP_SELF]?page=".($page+1)
?>">下一页</a>
<a href="<?php
echo "$_SERVER[PHP_SELF]?page={$total_page}"
?>">末页</a>
<span>共<?php echo $total?>条</span>
</div>
</div>
<div id="right" >
<h2>留言板</h2>
<div > <a href="">首页</a> | <button>留言</button> <a href="" class="right">管理员登录</a>
<form method="post" action="ressage_post.php" style="display:none;" onsubmit="return foo();" name="myform" ">
<div class="form">
<p>
姓名：<input type="text" name="name">
</p>
<p>
邮箱：<input type="email" name="email">
</p>
<p>
留言内容：<br/>
<textarea cols="30" rows="7" name="content"></textarea>
</p>
<p>
验证码：<input type="text" name="vcode"><img src="yanzhengma.php" onClick="this.src='yanzhengma.php?nocache='+Math.random()" style="cursor:hand">
</p>
<p>
<button class="button">提交留言</button>
</p>
</div>
</form>
</div>
</body>
</html>With the above code, you only need to post a message on the html page, and the message will be displayed on the same page. When the content fills the page, the paging effect will be achieved
Let’s look at the page display on the right. There is a delete link behind each message. We will create the delete function in the next chapter.
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