Part A — Simple Session Examples (basic)

These demonstrate storing & retrieving a session variable using a simple form flow.

• session_form.php — Form page (submit to store)
• session_store.php — Stores the form value in the session
• session_display.php — Displays the stored session value
• session_clear.php — Clear session (optional)

Part B — Secure Session Examples (with security changes)

Same flow as Part A but includes security improvements (CSRF token, sanitized input, secure cookie settings, session regeneration, logout).

• session_form_secure.php — Secure form (CSRF token + client-side pattern)
• session_store_secure.php — Store sanitized data, check CSRF, regenerate session ID
• session_display_secure.php — Display using escaped output
• session_logout_secure.php — Securely clear/destroy session & cookie