What security settings in PHP could potentially cause the issue of being logged out after a successful login?

The issue of being logged out after a successful login in PHP could potentially be caused by the session.gc_maxlifetime setting being too low. This setting determines the maximum lifetime of a session in seconds. To solve this issue, you can increase the session.gc_maxlifetime value to a higher number to prevent premature session expiration.

// Increase the session.gc_maxlifetime value to prevent premature session expiration
ini_set('session.gc_maxlifetime', 3600); // Set session lifetime to 1 hour

session_start(); // Start the session