How can I include PHP subs in a html <TD> tag using echo

How can I include PHP IF-ELSE subs in a html <TD> tag using echo, for example, I need to do the following:

<?
if($session->logged_in){
   echo "<h1>Logged In</h1>";
   echo "Welcome <b>$session->username</b>, you are logged in. <br><br>"
       ."[<a href=\"userinfo.php?user=$session->username\">My Account</a>] &nbsp;&nbsp;"
       ."[<a href=\"useredit.php\">Edit Account</a>] &nbsp;&nbsp;";
   if($session->isAdmin()){
      echo "[<a href=\"admin/admin.php\">Admin Center</a>] &nbsp;&nbsp;";
   }
   echo "[<a href=\"process.php\">Logout</a>]";
}
else{
?>

Code (text):

And this is what I have, see below, but it doesn't work correctly, the IF-Else get ignored:

<TD height="82" align="center" style="font-size: 8pt"><? echo "<b>Member Total:</b> ".$database->getNumMembers(); ?>
<p><? echo "There are ".$database->num_active_users; ?><? echo " registered members and ".$database->num_active_guests; ?><? echo " guests viewing the site."; ?></p>
<p>
   <? echo "<?"; ?> 
   <? echo "if(".$session->logged_in; ?><? echo "){"; ?>
   <? echo "<h1>Logged In</h1>"; ?>
   <? echo "Welcome <b>".$session->username; ?><? echo "</b>, you are logged in. <br><br>"; ?>
   <? echo "[<a href=\"userinfo.php?user=".$session->username; ?><? echo "\">My Account</a>] &nbsp;&nbsp;"; ?>
   <? echo "[<a href=\"useredit.php\">Edit Account</a>] &nbsp;&nbsp;"; ?>
   <? echo "if(".$session->isAdmin(); ?><? echo "){"; ?>
   <? echo "[<a href=\"admin/admin.php\">Admin Center</a>] &nbsp;&nbsp;"; ?>
   <? echo "}"; ?>
   <? echo "[<a href=\"process.php\">Logout</a>]"; ?>
   <? echo "}"; ?>
   <? echo "else{"; ?>
   <? echo "?>"; ?>
</p>
</TD>

Code (text):

I basically just need to have this subroutine in my table data cell, any help will be much appreciated, coz this is driving me nuts!

Thanks

 

<TD height="82" align="center" style="font-size: 8pt"><? echo "<b>Member Total:</b> ".$database->getNumMembers(); ?>

<p><? echo "There are ".$database->num_active_users; ?><? echo " registered members and ".$database->num_active_guests; ?><? echo " guests viewing the site."; ?></p>

<p>
<?php if($session->logged_in) { ?>
<p>blah blah blah</p>

<?php } ?>

 

Thanks Jeff, that worked great except for the else{ portion and the closing php tag which I bolded in red below:

<?
if($session->logged_in){
   echo "<h1>Logged In</h1>";
   echo "Welcome <b>$session->username</b>, you are logged in. <br><br>"
       ."[<a href=\"userinfo.php?user=$session->username\">My Account</a>] &nbsp;&nbsp;"
       ."[<a href=\"useredit.php\">Edit Account</a>] &nbsp;&nbsp;";
   if($session->isAdmin()){
      echo "[<a href=\"admin/admin.php\">Admin Center</a>] &nbsp;&nbsp;";
   }
   echo "[<a href=\"process.php\">Logout</a>]";
}
[B][COLOR="Red"]else{
?>[/COLOR][/B]

Code (markup):

I tried the same techniques on the else{ and closing ?> above, but I had no success so I left it out as seen below in my revision... I would still like to get the else portion working but I get an unexpected T_Else error... Can anybody correct me on this?

<TD height="82" align="center" style="font-size: 8pt"><? echo "<b>Member Total:</b> ".$database->getNumMembers(); ?>
<p><? echo "There are ".$database->num_active_users; ?><? echo " registered members and ".$database->num_active_guests; ?><? echo " guests viewing the site."; ?></p>
<p>
   <?php if($session->logged_in) { ?>
         <? echo "<h1>Logged In</h1>"; ?>
         <? echo "Welcome <b>".$session->username; ?><? echo "</b>, you are logged in. <br><br>"; ?>
         <? echo "[<a href=\"userinfo.php?user=".$session->username; ?><? echo "\">My Account</a>] &nbsp;&nbsp;"; ?>
         <? echo "[<a href=\"useredit.php\">Edit Account</a>] &nbsp;&nbsp;"; ?>
         <?php if($session->isAdmin()){ ?>
               <? echo "[<a href=\"admin/admin.php\">Admin Center</a>] &nbsp;&nbsp;"; ?>
         <?php } ?>
               <? echo "[<a href=\"process.php\">Logout</a>]"; ?>
   <?php } ?>
   [COLOR="Red"]Missing: else{
   missing: ?>[/COLOR]
</p>
</TD>

Code (markup):

Thanks Alot

 

No worries, I got it!

<TD height="82" align="center" style="font-size: 8pt"><? echo "<b>Member Total:</b> ".$database->getNumMembers(); ?>
<p><? echo "There are ".$database->num_active_users; ?><? echo " registered members and ".$database->num_active_guests; ?><? echo " guests viewing the site."; ?></p>
<p>
   <?php if($session->logged_in) { ?>
         <? echo "<h1>Logged In</h1>"; ?>
         <? echo "Welcome <b>".$session->username; ?><? echo "</b>, you are logged in. <br><br>"; ?>
         <? echo "[<a href=\"userinfo.php?user=".$session->username; ?><? echo "\">My Account</a>] &nbsp;&nbsp;"; ?>
         <? echo "[<a href=\"useredit.php\">Edit Account</a>] &nbsp;&nbsp;"; ?>
         <?php if($session->isAdmin()){ ?>
               <? echo "[<a href=\"admin/admin.php\">Admin Center</a>] &nbsp;&nbsp;"; ?>
         <?php } ?>
               <? echo "[<a href=\"process.php\">Logout</a>]"; ?>
   <?php } else { echo 'error'; } ?>
</p>
</TD>

Code (markup):