Amazon Affiliates Links using Function.php to generate link also using ACF field

Hi there,

Basically I am trying to get a function to work in a page theme file so that I can set a link on an image and some text to the products amazon page. I have create Books as a custom post type, and have developed a number of customer fields using Advanced Custom Fields.

One of these fields is n Amazon Affiliate Product Number.

This number is to be used as part of the link.

Currently my function in function.php looks like this:

function getAffiliateLink($productCode)

{

  global $VisitorCountry;

  if ( isset($VisitorCountry) ) {

    if ($VisitorCountry->GetCode() == 'GB') {

      return 'https://amazon.co.uk/gp/product/' . $productCode . '/?tag=indautlan-21';

    } else if ($VisitorCountry->GetCode() == 'CA') {

      return 'https://amazon.ca/gp/product/' . $productCode . '/?tag=indautlan00-20';

    } else {

      return 'https://amazon.com/gp/product/' . $productCode . '/?tag=indautlan-20';

    }

  }

}

One of my anchor tags currently looks like this:

<a href="<?php ?>" title="Get more details for <?php the_title(); ?>">
						<div id="book-cover" class="featured" style="background-image:url('<?php echo $image[0]; ?>')">
						</div>
					</a>

This is missing the href obviously as I am still trying to work out how to call the function, as well as place the Amazon Product Number in the $productCode variable in the function.

Also, I call the Amazon Product Number from Advanced Custom Fields using:

$asin = get_field(amazon_product_code);

Any help anyone could give me on this would be highly welscomed… I also have another post open on another issue but regarding the same site, that can be found here:

Hope to hear back from someone soon, any help on this would be very very appreciated, sure I’m just missing something simple!