This probably isn’t useful for anyone but I’m currently using WooCommerce with WordPress and I needed a solution where a product item would automatically be added to cart on page load. The code below is what I came up with, this code will also force the user to have only 1 quantity of the item. To use, fill in the $product_id variable with your product id and paste the code in your child themes functions.php file. add_action( 'wp_loaded', function() { …