DATABASE Error on form submission

DATABASE Error on form submission
Dear friends,

My form works on localhost and writes to mysql database with php script,
however
when I use same form on server over the internet, it writes to mysql
database, that means no connection problem,

however it gives me error stated below.

Guidance, please.

------------------------------------------------
Error
-------------------------------------------------------------------
Notice: Use of undefined constant topic_owner - assumed 'topic_owner' in
 \\premfs15\sites\premium15\mrbpeace\webr
oot\do_addtopic.php on line 3

Notice: Use of undefined constant topic_title - assumed 'topic_title' in
 \\premfs15\sites\premium15\mrbpeace\webr
oot\do_addtopic.php on line 3

Notice: Use of undefined constant post_text - assumed 'post_text' in
 \\premfs15\sites\premium15\mrbpeace\webr
oot\do_addtopic.php on line 3

Warning: Cannot modify header information - headers already sent by (output
started at  \\premfs15\sites\premium15\mrbushforpeac
e\webroot\do_addtopic.php
:3)
in  \\premfs15\sites\premium15\mrbpeace\webr
oot\do_addtopic.php on line 4
----------------------------------------------------------------------------
--
----------
code of php file
----------------------------------------------------------------------------
--
----------
<?php
//check for required fields from the form
if ((!$_POST[topic_owner]) || (!$_POST[topic_title])|| (!$_POST[post_text]))
 {
header("Location: addtopic.html");
exit;
}

//connect to server and select database
$conn = mysql_connect("orf-mysql1.briter.com", "mr", "p") or
die(mysql_error());
mysql_select_db("meace",$conn)  or die(mysql_error());

//create and issue the first query
$add_topic = "insert into forum_topics values ('', '$_POST[topic_title]',
now(), '$_POST[topic_owner]')";
mysql_query($add_topic,$conn) or die(mysql_error());

//get the id of the last query
$topic_id = mysql_insert_id();

//create and issue the second query
$add_post = "insert into forum_posts values ('',
'$topic_id','$_POST[post_text]', now(), '$_POST[topic_owner]')";
mysql_query($add_post,$conn) or die(mysql_error());

//create nice message for user
$msg = "<P>The <strong>$topic_title</strong> topic has been created.</p>";
?>
<html>
<head>
<title>New Topic Added</title>
</head>
<body>
<h1>New Topic Added</h1>
<?php print $msg; ?>
</body>
</html>
-----------------------------------------------------------------
Form code
----------------------------------------------
<?php

include 'menufile.php';
?>
<html><center>
<head>
<title>Add a Topic</title>
</head>
<body>
<h1>Add a Topic</h1>
<form method=post action="do_addtopic.php">
<p><strong>Your E-Mail Address:</strong><br>
<input type="text" name="topic_owner" size=40 maxlength=150>
<p><strong>Topic Title:</strong><br>
<input type="text" name="topic_title" size=30 maxlength=150>
<P><strong>Post Text:</strong><br>
<textarea name="post_text" rows=8 cols=30 wrap=virtual></textarea>
<P><input type="submit" name="submit" value="Add Topic"></p></center>
</form>
</body>
</html>
Post Follow-up to this message
Remember14a@aol.com
08-31-04 08:55 AM