Creating my first hook...

[X3non]

Hi,

 

I've red the documentation abouts hooks but I'm a bit lost. I would like to create a hook to retreive servers configuration in the cart, when summited, and then send thos information by REST to another server.

 

How can I know what are the fields name of my servers ?

 

function hook_CreationServeur($vars) {

$produtsSize=sizeOf($_SESSION['cart']['products']);

for($i = 0; $i < $produtsSize;$i++)

{

 

$_SESSION['cart']['products'][$i]

 

}

add_hook("ShoppingCartValidateCheckout",1,"hook_CreationServeur");

 

I understand that "$_SESSION['cart']['products'][$i]" is my product (Array). I have custum fields for my products, how can I have the value of those fields ?