php开发留言板教程之留言板完成
conn.php文件
<?php
$conn = @ mysql_connect("localhost", "root", "123456789") or die("数据库链接错误");
mysql_select_db("bbs", $conn);
mysql_query("set names 'utf8'"); //使用utf-8中文编码;
?>add.html文件
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<link href="css.css" rel="stylesheet" type="text/css">
<title>Title</title>
<?php include ("add.php")?>
</head>
<script>
function CheckPost() {
if(myform.user.value=="")
{
alert("请填写用户");
myform.user.focus();
return false;
}
if (myform.title.value.length<5)
{
alert("标题不能少于5个字符");
myform.title.focus();
return false;
}
if (myform.content.value=="")
{
alert("内容不能为空");
myform.content.focus();
return false;
}
}
</script>
<body>
<b> <a href="list.php">浏览留言</a> </b>
<hr size=1>
<form action="add.php" method="post" name="myform" onsubmit="return CheckPost();">
用户：<input type="text" size="10" name="user"/><br>
标题：<input type="text" name="title" /><br>
内容：<textarea name="content"></textarea><br>
<input type="submit" name="submit" value="发布留言" />
</form>
</body>
</html>css.css文件
td {
line-height: 16pt;
font-size: 10pt;
font-family: "Verdana", "Arial", "Helvetica", "sans-serif";
}
a:link {
text-decoration: none;
color: #000000;
}
body {
font-size: 10pt;
line-height: 13pt;
background-color: #ECF5FF;
}
textarea {
font-size: 8pt;
font-family: "Verdana", "Arial", "Helvetica", "sans-serif";
border: 1px solid #999999;
padding: 5px;
}
form {
margin: 0px;
padding: 0px;
}
.textdrow {
color:#666666;
filter: DropShadow(Color=white, OffX=1, OffY=1, Positive=1);
}
.p {
text-indent: 24px;
}add.php
<?php
include ("conn.php");
if ($_POST['submit']){
$sql="insert into message(id,user,title,content,lastdate) ".
"values ('','$_POST[user]','$_POST[title]','$_POST[content]',now())";
mysql_query($sql);
echo "<script>alert('添加成功');history.go(-1)</script>";
}
?>list.php文件
<!DOCTYPE html>
<html lang="utf-8">
<head>
<link href="css.css" rel="stylesheet" type="text/css">
</head>
<?php
include ("conn.php");
?>
<table width=500 border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#add3ef" >
<?php
$sql="select * from message order by id desc";
$query=mysql_query($sql);
while($row=mysql_fetch_array($query)){ ?>
<tr bgcolor="#eff3ff">
<td><font color="red">标题：</font><?php echo $row['title'];?> <font color="red">用户：</font><?php echo $row['user'];?><div align="right"><a href="del.php?id=<?php echo $row['id'];?>">删除</a></div></td>
</tr>
<tr bgColor="#ffffff">
<td>发表内容:<?php echo $row['content'];?></td>
</tr>
<tr bgColor="#ffffff">
<td><div align="right">时间:<?php echo $row['lastdate'];?></td>
</tr>
<?php } ?>
<tr bgcolor="#f0fff0">
<td><div align="right"><a href="add.html">返回留言</a> </td>
</tr>
</table>
</html>del.php文件
<?php include 'conn.php'; $id = $_GET['id']; $query="delete from message where id=".$id; mysql_query($query); ?> <?php //页面跳转，实现方式为javascript $url = "list.php"; echo "<script>"; echo "window.location.href='$url'"; echo "</script>"; ?>
至此留言板的编写基本完成，本篇只起到抛砖引玉，作为最简单最基本的实例，让读者先了解如何使用php来操作数据库，组合成简单的实例。
