PHP & smarty - nested queries and arrays

[Amanda Hemmerich <ahemmeri@xxxxxxxxxxx>]

Hello!

I'm using PHP and Smarty to try to build an array of arrays using the 
results from nested queries.  I am just learning about nested arrays, 
and I'm not sure what I'm doing wrong.

I am hoping someone can give me a hint as to what I am doing wrong.  I 
looked on php.net, but still couldn't figure it out.

If I remove the PHP foreach loop, it works fine, except, of course, no 
sub projects show up.   The error must be in there, but I'm just not 
seeing it.

I get the following error with the code below:
    
Warning: Smarty error: unable to read resource: "welcome/Object.tpl" in 
/usr/local/lib/php/Smarty/Smarty.class.php on line 1088
  
PHP STUFF
$query ="SELECT * FROM projects WHERE parent_project_id is NULL OR 
parent_project_id = ''";

$projects = $db->getAssoc($query, DB_FETCHMODE_ASSOC);

foreach ($projects as $key => $project) {
 $query ="SELECT * FROM projects WHERE parent_project_id = 
$projects[$key]['project_id']";
 $sub = $db->getAssoc($query, DB_FETCHMODE_ASSOC);
 $projects[$key]['subs'] = $sub;
}
$tpl->assign('projects', $projects);
  
SMARTY STUFF
{foreach from=$projects item='entry'}
   <b>{$entry.short_name}</b><br />
   <ul>
   {foreach from=$entry.subs item='sub'}
       <li>{$sub.short_name}</li>
   {foreachelse}
       <li>No subs for this project</li>
   {/foreach}
   </ul>
{foreachelse}
   <b>No projects found</b>
{/foreach}

Can anyone point me in the right direction?

Thanks,
Amanda

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