What are the potential consequences of starting a session multiple times in PHP code?

Starting a session multiple times in PHP code can lead to conflicts and unexpected behavior, as each call to `session_start()` initializes a new session or resumes an existing one. To avoid this issue, you can check if a session is already active before starting a new one by using the `session_status()` function. If the session is not active, then you can safely start a new session.

// Check if a session is already active before starting a new one
if (session_status() == PHP_SESSION_NONE) {
    session_start();
}