WooCommerce conditionally redirect users after add to cart - Category

woocommerce-conditionally-redirect-users-after-add-to-cart-category.php

<?php
/**
 * Redirect users after add to cart.
 */
function my_custom_add_to_cart_redirect( $url ) {
	if ( ! isset( $_REQUEST['add-to-cart'] ) || ! is_numeric( $_REQUEST['add-to-cart'] ) ) {
		return $url;
	}
	$product_id = apply_filters( 'woocommerce_add_to_cart_product_id', absint( $_REQUEST['add-to-cart'] ) );
	// Only redirect products that have the 't-shirts' category
	if ( has_term( 't-shirts', 'product_cat', $product_id ) ) {
		$url = WC()->cart->get_checkout_url();
	}
	return $url;
}
add_filter( 'woocommerce_add_to_cart_redirect', 'my_custom_add_to_cart_redirect' );

What if we need to use multiple categories?