pyrokinesis
Вилы Выкидные 
if (isset($_POST['msg']) && isset($user))
{
if(!isset($err)){
mysql_query("INSERT INTO `z_chat` (id, id_room, id_user, time, msg) values('', '".$id."', '$user[id]', '$time', '".my_esc($msg)."')");
$_SESSION['message']='Сообщение успешно добавлено';
header ("Location: ?id=$id");
}
}echo "<form method="post" name='message' action="room.php?id=".$id."">";
echo '<textarea name="msg">'.$respons_msg.'</textarea><br />';
echo '<button type="submit" /></button>';
echo "</form>";