example code, queuing a toast on WooCommerce' redirect hook

code.php

<?php 

add_filter( 'woocommerce_add_to_cart_redirect', 'show_add_to_cart_toast', 10, 1 );
function show_add_to_cart_toast( $url ) {
	
    $product_id = absint( $_REQUEST['add-to-cart'] ?? 0 );
    
    if ( $product_id ) {
      
        $product = wc_get_product( $product_id );
		
        if ( $product ) {
            /* using BricksExtras helper function to show toast with id mfhden, swapping content to include product name */
            bricksextras_queue_toast( 'mfhden', $product->get_name() . ' added to cart!' );
        }
    }
    
    return $url;
}