Check whether a product is in the wishlist or not

Question

I\'m working on a Magento theme, and I need to build a function that can check to see whether or not a product has been added to the user\'s wishlist.

Magento has a

Answer 1

 load($_product->getId(),'product_id');
      if($wishlist->getId())
          //product is added
      echo "Added! - Product is in the wishlist!";
      else
          //add product to wishlist
      echo "getAddUrl($_product) ."'>Add This?";
  ;?>