<?php
function saveBasket(){
    global $basket;
$basket = base64_encode(serialize($basket));
setcookie('basket', $basket, 0x7FFFFFFF);
}
function basketInit(){
    global $basket, $count;
if(!isset($_COOKIE['basket'])){
$basket = ['orderid' => uniqid()];
saveBasket();
}else{
$basket = unserialize(base64_decode($_COOKIE['basket']));
$count = count($basket) - 1;
}
}
function add2Basket($id){
    global $basket;
    $basket[$id] = 1;
    saveBasket();
  }


 $id = $_GET ["id"];
if ($id){
    add2Basket ($id);
    header("Location: catalog.php");
    exit;
    }
 ?>
<p>Товаров в <a href="basket.php">корзине</a>: <?=$count?></p>