<?php
$queryPrice = "SELECT SUM(price) AS total_price FROM Packs WHERE id_packs IN (3371,3372,3373,3374);";
$queryFinalPrice = "SELECT SUM(FinalPrice) AS total_final_price FROM Contracts WHERE id_contracts IN (204028,204029,204030,204031);";
// Set the attribute to enable query buffering
$db->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true);
// Select using Laravel
$priceObj = $db::select($db::raw($queryPrice));
$finalPriceObj = $db::select($db::raw($queryFinalPrice));
var_dump($priceObj[0]->total_price, $finalPriceObj[0]->total_final_price);
$priceDouble = (double) $priceObj[0]->total_price;
$totalPriceDouble = (double) $finalPriceObj[0]->total_final_price;
var_dump($priceDouble, $totalPriceDouble);