How to automatically flush permalinks?

To automatically flush permalinks every hour, use the following code:

1. Hook the scheduling function to init.
2. Schedule an hourly event if not already scheduled.
3. Hook the scheduled event to a function.
4. Define the function to flush rewrite rules.

// Hook the scheduling function
add_action( 'init', 'schedule_my_hourly_event' );

// Schedule the event
function schedule_my_hourly_event() {
    if ( ! wp_next_scheduled( 'my_hourly_event' ) ) {
        wp_schedule_event( time(), 'hourly', 'my_hourly_event' );
    }
}

// Hook the event to a function
add_action( 'my_hourly_event', 'my_flush_rewrite_rules' );

// Function to flush rewrite rules
function my_flush_rewrite_rules() {
    flush_rewrite_rules();
}