What potential issues can arise when using session IDs in PHP forms?

Potential issues that can arise when using session IDs in PHP forms include security vulnerabilities if the session ID is not properly secured and protected from unauthorized access or session hijacking. To mitigate this risk, it is important to regenerate the session ID after a successful login or when sensitive actions are performed to prevent session fixation attacks.

// Regenerate session ID after successful login
session_regenerate_id(true);