include ("conn.php");
if($_POST['user'])
{
$sql="insert into `message` (`id`,`user`,`title`,`content`,`lastdate`)".
"values
('','$_POST[user]','$_POST[title]','$_POST[content]',now())";
mysql_query($sql);
echo "发表成功!";
}
include("head.php");
?>
利用 javascript 验证表单
<script language="javascript">
function CheckPost()
{
if (myform.user.value=="")
{
alert("请填写用户名");
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("必须要填写留言内容");
myform.content.focus();
return false;
}
}
</script>
<form action="add.php" method="post" name="myform" onsubmit="return
CheckPost();">
用户:<input type="text" name="user" size="10"/></br>
标题:<input type="text" name="title"/></br>