// 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' );