function disable_checkout_after_hours() { // Define your opening and closing times $opening_time = '09:00'; $closing_time = '18:00'; // Get the current time $current_time = current_time('H:i'); // Check if the current time is outside of the operating hours if ($current_time < $opening_time || $current_time > $closing_time) { // Disable checkout wc_add_notice(('Sorry, we are currently closed. Please come back during our opening hours.'), 'error'); remove_action('woocommerce_proceed_to_checkout', 'woocommerce_button_proceed_to_checkout', 20); } } add_action('woocommerce_checkout_process', 'disable_checkout_after_hours');