Calc.php (calculator backend)

//backend for form.php
<?php

require_once "db-unity/db.php";

$name = $_POST['name'];
$surname = $_POST['surname'];
$middlename = $_POST['middlename'];

$specialty_1 = $_POST['SPECIALTY_1'];
$priority_1 = intval($_POST['PRIORITY_1']);

$specialty_2 = $_POST['SPECIALTY_2'];
$priority_2 = intval($_POST['PRIORITY_2']);

$specialty_3 = $_POST['SPECIALTY_3'];
$priority_3 = intval($_POST['PRIORITY_3']);

$ZNO1 = intval($_POST['ZNO1']);
$ZNO2 = intval($_POST['ZNO2']);
$ZNO3 = intval($_POST['ZNO3']);
$ATT = floatval($_POST['ATT']);

$specialty = [];
$specialty[0] = $specialty_1;
$specialty[1] = $specialty_2;
$specialty[2] = $specialty_3;


$user = R::findOne('users', 'uid = ?', [$_COOKIE['identifierUser']]);
$user->name = $name;
$user->surname = $surname;
$user->middlename = $middlename;

$i=0;
$result = [];
foreach ($specialty as $spec) {
    $KZNO1 = 0;
    $KZNO2 = 0;
    $KZNO3 = 0;
    $KATT = 0;
    $KCOURSE = 0;
    switch ($spec) {
        case "Менеджмент":
            $KZNO1 = 0.20;
            $KZNO2 = 0.35;
            $KZNO3 = 0.35;
            $KATT = 0.10;
            break;
        case "Маркетинг":
            $KZNO1 = 0.20;
            $KZNO2 = 0.35;
            $KZNO3 = 0.35;
            $KATT = 0.10;
            break;
        case "Филология. Cловянские языки и литературы":
            $KZNO1 = 0.30;
            $KZNO2 = 0.40;
            $KZNO3 = 0.20;
            $KATT = 0.05;
            break;
        case "Экономика":
            $KZNO1 = 0.20;
            $KZNO2 = 0.35;
            $KZNO3 = 0.35;
            $KATT = 0.10;
            break;
        case "Прикладная (инженерная) механика":
            $KZNO1 = 0.20;
            $KZNO2 = 0.40;
            $KZNO3 = 0.30;
            $KATT = 0.05;
            $KCOURSE = 0.05;
            break;
        case "Металлургия":
            $KZNO1 = 0.20;
            $KZNO2 = 0.30;
            $KZNO3 = 0.40;
            $KATT = 0.05;
            $KCOURSE = 0.05;
            break;
        case "Электроэнергетика, электротехника и электромеханика":
            $KZNO1 = 0.20;
            $KZNO2 = 0.30;
            $KZNO3 = 0.40;
            $KATT = 0.05;
            $KCOURSE = 0.05;
            break;
        case "Архитектура и градостроительство":
            $KZNO1 = 0.20;
            $KZNO2 = 0.35;
            $KZNO3 = 0.35;
            $KATT = 0.10;
            break;
        case "Социальная работа":
            $KZNO1 = 0.30;
            $KZNO2 = 0.30;
            $KZNO3 = 0.30;
            $KATT = 0.10;
            break;
        case "Логистика транспортных систем":
            $KZNO1 = 0.20;
            $KZNO2 = 0.35;
            $KZNO3 = 0.30;
            $KATT = 0.05;
            $KCOURSE = 0.05;
            break;
        case "Информатика":
            $KZNO1 = 0.20;
            $KZNO2 = 0.40;
            $KZNO3 = 0.30;
            $KATT = 0.10;
            break;
    }

    $result[$i] =
        $ZNO1 * $KZNO1
        + $ZNO2 * $KZNO2
        + $ZNO3 * $KZNO3
        + $ATT * $KATT
        + $ATT * $KCOURSE;
    $i+=1;
}
$user->specialty_1 = $specialty_1;
$user->priority_1 = $priority_1;
$user->zno_competition_score_1 = $result[0];

$user->specialty_2 = $specialty_2;
$user->priority_2 = $priority_2;
$user->zno_competition_score_2 = $result[1];

$user->specialty_3 = $specialty_3;
$user->priority_3 = $priority_3;
$user->zno_competition_score_3 = $result[2];

R::store($user);

echo "<br>" . $specialty_1 . " " . $result[0];
echo "<br>" . $specialty_2 . " " . $result[1];
echo "<br>" . $specialty_3 . " " . $result[2];

?>