[PHP] mysql_fetch_array problem

[Jonni]

hi everyone!  i'm new here (and new to php) and have a question.  i'm trying
to run a simple blogger type script but am running into a problem i can't
seem to troubleshoot.  first, the three items i put into the database aren't
showing up on my page and then when i try to go to the archive for the
month, i get the following:

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result
resource in /home/blar/public_html/inc/main_inc.php on line 11

here's a part of my code of main_inc (first line is line 11):
function showPosts($result,$page)
{
 if ($myrow = mysql_fetch_array($result))
 {
  do
  {
   $rawdate = $myrow["postDate"];
   $formdate = date("l, F j, Y",
(strtotime(ereg_replace('([0-9]*)-([0-9]*)-([0-9]*)','\2/\3/\1',
$rawdate))));
   if ($date != $formdate)
   {
    $date = $formdate;
    ?>

    <!-- Formatting for date -->
    <b><?=$formdate;?></b><br>
    &nbsp;<br>

    <?
   }
   if ($page == 1)
   {
    showArchivePost($myrow);
   }
   else
   {
    showMainPost($myrow);
   }
  }
  while ($myrow = mysql_fetch_array($result));
 }
}
/code

thank in advance for any help.  :)

jonni b.
http://blar.org
http://uglypropaganda.com