Cross Sell Auto Generator

cross-sell-generator.php

<?php
/**
 * Filter the cross-sells displayed in the cart to always show specific products.
 */
function custom_filter_woocommerce_cart_cross_sells( $cross_sell_ids, $cart ) {
    // Specify the IDs of the products you want to always show as cross-sells.
    $custom_cross_sell_ids = array( '1', '2' );

    // Return your custom cross-sell product IDs.
    return $custom_cross_sell_ids;
}

add_filter( 'woocommerce_cart_crosssell_ids', 'custom_filter_woocommerce_cart_cross_sells', 10, 2 );
?>