Code-Snippets-Functions/Execute a function on a child site/WooCommerce/rename-buy-product-external-products.txt

add_filter( 'woocommerce_product_single_add_to_cart_text', 'wc_override_external_button_label', 9999, 2 );
add_filter( 'woocommerce_product_add_to_cart_text', 'wc_override_external_button_label', 9999, 2 );
 
function wc_override_external_button_label( $text, $product ) {
   if ( $product->is_type( 'external' ) ) $text = 'Buy Now →';
   return $text;
}