Bestproducts Cronjob

// Scheduled Action Hook
function create_bestproducts_page_hook( ) {
	$s = 'hello world';
}
add_action( 'create_bestproducts_page_hook', 'create_bestproducts_page_hook' );

// Custom Cron Recurrences
function create_bestproducts_page_recurrence( $schedules ) {
	$schedules['every_half_hour'] = array(
		'display' => __( 'every half hour', 'textdomain' ),
		'interval' => 1800,
	);
	return $schedules;
}
add_filter( 'cron_schedules', 'create_bestproducts_page_recurrence' );

// Schedule Cron Job Event
function create_bestproducts_page() {
	if ( ! wp_next_scheduled( 'create_bestproducts_page_hook' ) ) {
		wp_schedule_event( , 'every_half_hour', 'create_bestproducts_page_hook' );
	}
}
add_action( 'wp', 'create_bestproducts_page' );