[Dean C]

Change this:

PHP Code:

while ($cat = $DB_site->fetch_array($categories))
{
    $cat_cache[$cat['parentcategory']][] = $cat;
} 


To This:

PHP Code:

while ($cat = $DB_site->fetch_array($categories))
{
    $cat_cache[$cat['parentcategory']][] = $cat;
} 
echo '<pre>';
print_r($cat_cache);
echo '</pre>'; 


You'll be able to see how the array looks and works better then (only for development purposes of course