Message board problem

[Php_Beginner2]

Hi there,

I have written codes for a message board to be added into my website by using php and mysql. I have some problem here, the 'Numbers of Reply', 'Last Replied Time' and 'Last Replied by who' could not being updated when there are replies.

Here's the code (elec_forum.php):

<p ><h3 align="center">Department of Electronic Engineering</h3>
<?php 

include "connect.php"; //mysql db connection here

print "<link rel='stylesheet' href='style.css' type='text/css'>";

print "<A href='elec_post.php'>New Topic</a><br>";

print "<table class='maintable'>";

print "<tr class='headline'><td width=50%>Discussion Topic</td><td width=20%>Author</td><td>Replies</td><td>Last replied time</td></tr>";

$getthreads="SELECT * from elec_forum where parentid='0' order by lastrepliedto DESC";

$getthreads2=mysql_query($getthreads) or die("Could not get threads");

while($getthreads3=mysql_fetch_array($getthreads2))

{

  $getthreads3['title']=strip_tags($getthreads3['title']);

  $getthreads3['author']=strip_tags($getthreads3['author']);

  print "<tr class='mainrow'><td><a href='elec_message.php?id=$getthreads3[postid]'>$getthreads3[title]</a></td><td>$getthreads3[author]</td><td>$getthreads3[numreplies]</td><td>$getthreads3[showtime]<br>Last post by <b>$getthreads3[lastposter]</b></td></tr>";

}

print "</table>";



?>  

Here's the reply code (elec_reply.php):

<?php

include "connect.php"; //connection string

print "<link rel='stylesheet' href='style.css' type='text/css'>";

print "<table class='maintables'>";

print "<tr class='headline'><td>Reply</td></tr>";

print "<tr class='maintables'><td>";

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

{

   $name=$_POST['name'];

   $yourpost=$_POST['yourpost'];

   $subject=(isset($_POST['subject']))?$_POST['subject']:null;;

   $id=$_POST['id'];

   if(strlen($name)<1)

   {

  print "You did not type in a name."; //no name entered

   }

   else if(strlen($yourpost)<1)

   {

  print "You did not type in a post."; //no post entered

   }

   else

   {
      date_default_timezone_set('Asia/Brunei');
      $thedate=date("U"); //get unix timestamp

  $displaytime=date("F j, Y, g:i a");

  //we now strip HTML injections

  $subject=strip_tags($subject);

  $name=strip_tags($name);

  $yourpost=strip_tags($yourpost); 

  $insertpost="INSERT INTO elec_forum(author,title,post,showtime,realtime,lastposter,parentid) values('$name','$subject','$yourpost','$displaytime','$thedate','$name','$id')";

  mysql_query($insertpost) or die("Could not insert post"); //insert post


  print "Message updated, go back to <A href='elec_message.php?id=$id'>Message</a>.";

   }



}

else

{

   $id=$_GET['id'];

   print "<form action='elec_reply.php' method='post'>";

   print "<input type='hidden' name='id' value='$id'>";

   print "Your name:<br>";

   print "<input type='text' name='name' size='20'><br>";

   print "Your message:<br>";

   print "<textarea name='yourpost' rows='5' cols='40'></textarea><br>";

   print "<input type='submit' name='submit' value='submit'></form>";



}

print "</td></tr></table>";

?>

I am not sure where's the problem occurred. Please advice.