Random Free Product For Each Day in WooCommerce https://wpsites.net/?p=114123

wp_schedule_event.php

// Schedule the function to run hourly
add_action('init', 'schedule_update_random_free_product');
// Function to select and update a random free product
function update_random_free_product() {
    $random_product_id = get_random_free_product();
    if ($random_product_id) {
        update_option('random_free_product_id', $random_product_id);
        update_option('random_free_product_date', current_time('Y-m-d'));
    }
}

// Hook the function to run when the scheduled event fires
add_action('update_random_free_product_event', 'update_random_free_product');
function schedule_update_random_free_product() {
    if (!wp_next_scheduled('update_random_free_product_event')) {
        wp_schedule_event(current_time('timestamp'), 'hourly', 'update_random_free_product_event');
    }
}