[Don L]

One small problem with this code is that it doesn't sort by searchscore on searches originating from a category page. Here's my alteration to make it always default to sorting by searchscore:

Comment out the case "orderby" in the sort search results section.

Commented out section:

//         case "orderby":
//            $sort_string = "$sql_tbl[products_categories].orderby $direction";
//            break;

Including surrounding code:

   if (!empty($data["sort_field"])) {
      # Sort the search results...

      $direction = ($data["sort_direction"] ? "DESC" : "ASC");
      switch ($data["sort_field"]) {
         case "productcode":
            $sort_string = "$sql_tbl[products].productcode $direction";
            break;
         case "title":
            $sort_string = "searchscore desc, $sql_tbl[products].product $direction"; // Add score to sort - LNJ
            break;
//         case "orderby":
//            $sort_string = "$sql_tbl[products_categories].orderby $direction";
//            break;
         case "quantity":
            $sort_string = "$sql_tbl[products].avail $direction";
            break;
         case "price":
            if (!empty($active_modules["Special_Offers"]) && !empty($search_data["products"]["show_special_prices"])) {
               $sort_string = "x_special_price $direction, price $direction";
            }
            else {
               $sort_string = "price $direction";
            }
            break;
         default:
            $sort_string = "searchscore desc,$sql_tbl[products].product";  // Add score to sort - LNJ
      }

That's it. This may have unintended consequences, but none that I have encountered so far.