What are the potential pitfalls of not handling error messages properly in PHP?

If error messages are not handled properly in PHP, sensitive information about the code structure or database connections may be exposed to potential attackers. This can lead to security vulnerabilities and potential exploitation of the system. To avoid this, error messages should be handled securely by logging them to a file or database instead of displaying them directly to the user.

// Set up error handling to log errors to a file
ini_set('log_errors', 1);
ini_set('error_log', '/path/to/error.log');