Вставка или обновление в зависимости от наличия записи в БД

$nname = mysql_real_escape_string($val[NAME]);
 
$sql = "SELECT id FROM item WHERE id = '$val[ID]' LIMIT 1";
 
$result = mysql_query($sql);
 
if(mysql_num_rows($result)==0){
        $query = "INSERT INTO item (name, category_id) VALUES ('$nname', $val[CATEGORY_ID])";
        $res = mysql_query($query) or die(mysql_error());
}else{
        $query = "UPDATE item SET name = '$nname', category_id = $val[CATEGORY_ID]";
        $res = mysql_query($query) or die(mysql_error());
}

$nname = mysql_real_escape_string($val['NAME']);
 
$sql = "SELECT id FROM item WHERE id = '".$val['ID']."' LIMIT 1";
 
$result = mysql_query($sql);
 
$query = (!mysql_num_rows($result))?
    "INSERT INTO item (name, category_id) VALUE ('".$nname."', '".$val['CATEGORY_ID']."')"
        :
    "UPDATE item SET name = '".$nname."', category_id = '".$val['CATEGORY_ID']."' WHERE id='".$val['ID']."'";
 
$res = mysql_query($query) or die(mysql_error());