Modifying Products URL Link - Adding Client Variables Dynamically.

[Matt Staines]

Hi Guys,

I'm modifying the Product Pages 'Product URL' input so that I can pass a user onto another website with some client variables. I have no need for it's normal use as is, so it makes sense I use it for something useful to me.

I have this string that doesn't quite work. I'm using www.example.com for link example.

$products_url = $product_info->fields['products_url'].'&userid='.$_SESSION['customer_id'];

This returns:
http://www.example.com%26userid%3D1

So the & = are being encoded incorrectly.

I'm trying to achieve a link like this:
www.example.com&userid=1 - My Customer ID being '1'

Does anybody know of the correct way to encode this? Possibly with an example piece of code?

Thanks