PP/update_order.php

<?php
$host = "kurek620.beget.tech";
$username = "kurek620_baze";
$password = "6910WASD579h";
$database = "kurek620_baze";

$mysql = new mysqli($host, $username, $password, $database);

if($mysql->connect_error){
    die("Ошибка подключения". $mysql->connect_error);
}

$setting = $_POST["hide_c"];
$product_id = $_POST["hide_pr"];

    $query = "UPDATE Products SET count_p = count_p - $setting WHERE id = $product_id";
    $result = $mysql->query($query);
    if(!$result){
        echo "Что то не так" . $mysql->error;
    }
    else{


        echo "<script>window.location.href = 'admin_page.php';</script>";

    }

?>