🐘 PHP Sessions

Sessions let you store data on the server tied to a user’s browser — perfect for logins, carts, or keeping state.

📝 Example: Starting & Using a Session

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📖 Key Session Concepts

Always call session_start() before any HTML output to use sessions.
$_SESSION is a superglobal array to store session data.
Session data persists across page reloads for the same user.
Sessions are stored on the server; the browser holds only a session ID cookie.
Use sessions for user login states, carts, preferences, and more.

💡 Tip: Remember to session_destroy() to log users out or clear session data when done.