Change the product columns in WooCommerce

functions-columns.php

/*
1 - modify your theme functions file
2 - modify the 'loop-shop.php' file
You need to set the 'Product List' value to suit your layout. You will also need to look at changing the CSS if you change from the default WooCommerce values.
1 : Add this to your theme functions file
*/
	   add_filter('loop_shop_columns', 'wc_product_columns_frontend');
            function wc_product_columns_frontend() {
                global $woocommerce;

                // Default Value also used for categories and sub_categories
                $columns = 4;

                // Product List
                if ( is_product_category() ) :
                    $columns = 4;
                endif;

                //Related Products
                if ( is_product() ) :
                    $columns = 2;
                endif;

                //Cross Sells
                if ( is_checkout() ) :
                    $columns = 4;
                endif;

		return $columns;


            }
/*
2 : Copy
wp_content/plugins/woocommerce/templates/loop-shop.php
to
wp_content/themes/YOUR_THEME_NAME/woocommerce/loop-shop.php
and change line 8 from
*/

if (!isset($woocommerce_loop['columns']) || !$woocommerce_loop['columns']) $woocommerce_loop['columns'] = apply_filters('loop_shop_columns', 4);

// to

$woocommerce_loop['columns'] = apply_filters('loop_shop_columns', 4);

thanks!