Q1. Explain PHP session handling and common security concerns.
Sessions persist state across stateless HTTP requests. session_start() creates or resumes a session identified by a cookie (PHPSESSID) and stores data server-side. Securi...
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Q2. What is CSRF and how do you prevent it?
Cross-Site Request Forgery tricks a logged-in user's browser into sending an authenticated request to your site. Because browsers attach cookies automatically, a maliciou...
Q3. How does XSS relate to authentication security?
Cross-Site Scripting lets an attacker run JavaScript in your origin. Once that happens, the script can read anything the page can read, including tokens in `localStorage`...
Q4. How do you manage cookies in Next.js?
By using the cookie package or next-cookies to read and write cookies in API routes or server-side functions. ```js import Cookies from "cookies"; export default function...
Q5. How do you read and set cookies in the App Router?
On the server (server components or route handlers) use `cookies()` from `next/headers` to read cookies. To set cookies from a route handler, return a `Response` with a `...