"", 'title' => __( 'Not taxable', 'phone-orders-for-woocommerce' ), ), array( 'slug' => "standard", 'title' => __( 'Standard rate', 'phone-orders-for-woocommerce' ), ), ); foreach ( WC_Tax::get_tax_classes() as $tax_class_title ) { $tax_classes[] = array( 'slug' => sanitize_title( $tax_class_title ), 'title' => $tax_class_title, ); } $options = WDP_Helpers::get_settings(); ?>