Can you please tell me what these lines of code do?
$sub_category = 0;
if (!empty($_POST['sub_category_id'])) {
$is_found = $db->where('type',PT_Secure($_POST['category_id']))->where('lang_key',PT_Secure($_POST['sub_category_id']))->getValue(T_LANGS,'COUNT(*)');
if ($is_found > 0) {
$sub_category = PT_Secure($_POST['sub_category_id']);
}
}
I look forward to any assistance