Огромное спасибо, Soniks.
Вот только замена True на False ничего не дает, пришлось полностью удалить всё условие.
вот это:
if (count($cat_data)) {
$statistics = strtr($lang_list_categories['stat1'], array('[pictures]' => $picture_count,
'[albums]' => $album_count,
'[cat]' => $cat_count,
'[comments]' => $comment_count,
'[views]' => $hit_count));
} else {
$STATS_IN_ALB_LIST = false;
$statistics = strtr($lang_list_categories['stat3'], array('[pictures]' => $picture_count,
'[albums]' => $album_count,
'[comments]' => $comment_count,
'[views]' => $hit_count));
}
} elseif ($cat >= FIRST_USER_CAT && $current_album_set) {
$result = db_query("SELECT count(*) FROM {$CONFIG['TABLE_ALBUMS']} WHERE 1 $current_album_set");
$nbEnr = mysql_fetch_array($result);
$album_count = $nbEnr[0];
mysql_free_result($result);

$result = db_query("SELECT count(*) FROM {$CONFIG['TABLE_PICTURES']} WHERE 1 $current_album_set");
$nbEnr = mysql_fetch_array($result);
$picture_count = $nbEnr[0];
mysql_free_result($result);

$result = db_query("SELECT sum(hits) FROM {$CONFIG['TABLE_PICTURES']} WHERE 1 $current_album_set");
$nbEnr = mysql_fetch_array($result);
$hit_count = (int)$nbEnr[0];
mysql_free_result($result);

$statistics = strtr($lang_list_categories['stat2'], array('[pictures]' => $picture_count,
'[albums]' => $album_count,
'[views]' => $hit_count));
} else {
$statistics = '';