Question

( ! ) Notice: Undefined index: submit in D:\wamp\www\add.php on line

( ! ) Notice: Undefined index: submit in D:\wamp\www\add.php on line 9

if($_POST['submit'])
{$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";}else{echo"发表失败";}

?>
<form action="add.php" method="POST" >
用户：<input type="text" size=10 name="user"/><br>
标题：<input type="text" size=20 name="tltle"/><br>
内容：<textarea name="content"></textarea><br>

<input type="submit" name="submit"value="发布留言"/>
</form>
发表失败，求各位大神指教

Answer 1

将第一行 if($_POST['submit'])改成

if(isset($_POST['submit']) && $_POST['submit'])

追问

大神，不提示语法错误，但最后提示发表失败。求指点！