留言板php代码。

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我是靠谱客的博主明亮金鱼，最近开发中收集的这篇文章主要介绍留言板php代码。，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

数据库部分！

index.php

<html>
   <head>
       <meta http-equiv="Content_Type" content="text/html; charset=gb2312">
       <title>留言板</title></head>
   </head>
       <body>
           <div align="right"><a href="admin_login.htm" targert="_blank"><font size="+1"
               face="隶书">留言管理</font></a>
           </div>
           <div align="center"><font face="黑体"><h2>PHP学习交流留言板</h2></font>
           </div>

           <?php
           $conn=mysql_connect("localhost","root","901120") or die("没有连接上服务器".mysql_error());
           mysql_select_db("guest_book") or die("数据库连接不成功！".mysql_error());
           mysql_query("SET NAMES GB2312");


           echo "数据库连接成功<br>";
           /*mysql_query("delete from contents")or die("删除表失败了！".mysql_error());
           mysql_query("insert into contents(name,content) values("张三","php是什么东东"),
           ("李四","php很好学习吗？"),("狗五","php不好学呀，为啥？"),("王六","php还会流行多久")") or die("数据插入不成功！".mysql_error());
           echo "插入成功了！<br>";
           */


           $pageSize=3;
           $pageNumber=$_GET[ 'pageNumber' ];
           if($pageNumber==null)$pageNumber=1;

           $rs=mysql_fetch_row(mysql_query("select count(*) from contents"));//取得记录个数

       $totalCount=$rs[0];
       $exec="select * from contents limit ".(($pageNumber-1)*$pageSize).",3";//sql语句
       //(($pageNumber-1)*$pageSize).",3"中3是每一页中显示3个。
       $result=mysql_query($exec);//执行sql语句，返回结果

          while($rs=mysql_fetch_object($result)){ //利用循环语句输出结果
           echo "<table><tr><td>姓名：".$rs->name."</td></tr>";//显示姓名
           echo "<tr><td>留言：".$rs->content."</td></tr></table><br/>";//显示留言
           echo "……………………………………………………………………………………………………………………………………";
           echo "<br/>";
           }

           if($pageNumber>1){
               echo "<a href=index.php?pageNumber=".($pageNumber-1).">前一页&nbsp&nbsp&nbsp&nbsp</a>";
           }
           else{
               echo "前一页&nbsp&nbsp&nbsp&nbsp";
           }
           if($pageNumber < $totalCount/$pageSize){//判断页数
           echo "<a href=index.php?pageNumber=".($pageNumber+1).">后一页</a>";
           }
           else{
               echo "后一页";}
           mysql_close();

   ?>

           <div align="CENTER"><a href="message_post.html" tagert="_blank">
               <font size="+2" face="隶书"><p>我要留言</font></a>
           </div>


       </body>
   </html>

<form action="updata.php" method="post" name="name1">
<table cellspacing=0 bordercolordark=#FFFFFF width="60%" bordercolorlight=#000000 border=1 align="center" cellpadding="2">
<tr bgcolor="#6b8ba8" style="color:FFFFFF">
    <td width="100%" align="center" valign="bottom" height="19" colspan="2">访问者留言</td>
</tr>
<tr>
<td width="30%" align="center" height="30">留言人:</td>
<td width="70%" height="30"><input type="text" name="user" size="20" maxlength="21"></td>
</tr>
<tr>
<td height="80" align="center" width="30%" >留言内容:
</td>
<td height="80" width="70%">
   <textarea name="post_contents" rows="10" cols="50"></textarea>
   </td>
</tr>
<tr>
<td height="25" colspan="2" align="center">
    <input type="reset" value="重置留言">
   <input type="submit" value="提交留言">
   </tr>
   <table/>
</form>

留言处理

<?php
$name=$_POST['user'];
$content=$_POST['post_contents'];
$conn=mysql_connect("localhost","root","901120");

mysql_query("set names GB2312");
mysql_select_db("guest_book");
$exec="insert into contents(name,content) values ('".$_POST['user']."','".$_POST['post_contents']."')";
$result=mysql_query($exec)or die("添加留言不成功".mysql_error());
if($result>0)
echo "添加留言成功，谢谢您的留言！";
else
echo "<p><a href=index.php><center>返回主界面</center></a>";
mysql_close();
?>
<html><head><meta http-equiv='Refresh' content='3;URL=index.php'></head>
<body><p>谢谢您对本站的支持，三秒后将自动返……</p></body></html>

留言处理：

<?php
@session_start();
$admin_name=$_POST['admin_name'];
$admin_password=$_POST['admin_password'];
$conn=mysql_connect("localhost","root","901120") or die("服务器没有连接成功".mysql_error());
mysql_select_db("guest_book");
$exec="select * from admin where admin_name='".$admin_name."'";
$result=mysql_query($exec);
if($rc=mysql_fetch_object($result)){
   if($rc->admin_password==$admin_password){
   $_SESSION['admin']="ok";
   header("location:admin_index.php");
   }
   else echo "密码不正确！";
}
else echo "用户名不正确！";

mysql_close();
?>

<html>
<head>
<title>后台管理界面</title>
</head>
<body>
   <center><h1>后台管理界面</h1></center>
<?php

@session_start();
if($_SESSION['admin']=="ok"){
$conn=mysql_connect("localhost","root","901120");
mysql_query("set names GB2312");
mysql_select_db("guest_book");
$sexec="select * from contents";
$result=mysql_query($sexec) or die("没有选择出来结果".msql_err0r());;
while($rs=mysql_fetch_object($result)){
   echo "<table><tr><tb>姓名：".$rs->name."</td><tr>";
   echo "<table><tr><tb>留言：".$rs->content."</td><tr><br>";
   echo "<a href=delete.php?id=".$rs->id.">删除</a>";
   echo "<br><br>";
   }
    echo "<br><a href=index.php><center>回首页</center></a>";
}

mysql_close();
?>
</body>
</html>

<?php
@session_start();//以前犯错误了，在签名加一个@ 就不会提示错误了
if($_SESSION['admin']=="ok"){
$conn=mysql_connect("localhost","root","901120");
mysql_select_db("guest_book");
mysql_query("set names GB2312");
$exec="delete from contents where id=".$_GET['id'];
mysql_query($exec) or die("没有删除成功 !".mysql_error());
//echo "删除成功了！";
mysql_close();
}
header("location:admin_index.php");
?>