$ret = _CATEGORY_404;
// Is the category id set?
- if (!empty($cid)) {
+ if ($cid == "0") {
+ // No category
+ $ret = _CATEGORY_NONE;
+ } elseif ($cid > 0) {
// Lookup the category in database
$result = SQL_QUERY_ESC("SELECT cat FROM "._MYSQL_PREFIX."_cats WHERE id=%s LIMIT 1",
array(bigintval($cid)), __FILE__, __LINE__);