WooCommerce | Check if Product Category is in the Cart

woocommerce-check-category-in-cart.php

<?php 

/**
* Check if Product Category is in the Cart - WooCommerce
* https://businessbloomer.com/?p=72900
*/

add_action('woocommerce_before_cart', 'fs_check_category_in_cart');

function fs_check_category_in_cart() {

	// Set $cat_in_cart to false
	$cat_in_cart = false;

	// Loop through all products in the Cart        
	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {

		$product = $cart_item['data'];

		// If Cart has category "download", set $cat_in_cart to true
		if ( has_term( 'download', 'product_cat', $product->get_id() ) ) {
			$cat_in_cart = true;
			break;
		}
	}

	// Do something if category "download" is in the Cart      
	if ( $cat_in_cart ) {
		
		// For example, print a notice
		wc_print_notice( 'Category Downloads is in the Cart!', 'notice' );

		// Or maybe run your own function...
		// ..........

	}

}