How can the issue of "A session had already been started - ignoring session_start()" be resolved in PHP?

The issue of "A session had already been started - ignoring session_start()" occurs when session_start() is called after the session has already been started, which can happen if the session_start() function is called multiple times in the same script. To resolve this issue, you can check if a session has already been started before calling session_start() using session_status().

if (session_status() == PHP_SESSION_NONE) {
    session_start();
}