Id 1 Shopping- | Php

$user_id = $_SESSION['user_id']; $order_id = (int)$_GET['order_id']; $stmt = $pdo->prepare("SELECT * FROM orders WHERE id = ? AND user_id = ?"); $stmt->execute([$order_id, $user_id]); Don’t expose id=1 . Use a public lookup key:

// orders.php?order_id=123 $order = $db->query("SELECT * FROM orders WHERE id = " . $_GET['order_id']); No user validation. No session check. Now any logged‑in user (or even a bot) can cycle through order_id=1,2,3… and steal order details, names, addresses, and phone numbers. 1. Never Trust User Input Always validate that the logged‑in user owns the record they’re trying to access. Php Id 1 Shopping-

At first glance, it seems harmless – just a way to fetch product #1. But for attackers, seeing id=1 is an invitation to try id=2 , id=3 , or worse, id=999 . This is called an vulnerability, and it’s surprisingly common in PHP shopping systems. The Problem with “ID=1” in Shopping Carts Imagine your product page works like this: $_GET['order_id']); No user validation