add meta to a product on cart WooCommerce

Question

i'm trying to add product to the cart via PHP using this code,

$woocommerce->cart->add_to_cart(20);

the product is getting into the cart but i would like to add custom meta as shown on the image but i want to do that via PHP and not the backend

Answer 1

So after bit of reading throughout the code. I've found this

$woocommerce->cart->add_to_cart($product, $quantity, $variation, array('foo'=>'bar') );