WC_Product::exists PHP Method

    public function exists()
    {
        return false !== $this->get_status();
    }

 /**
  * Gets a user's downloadable products if they are logged in.
  *
  * @access public
  * @return array Array of downloadable products
  */
 function get_downloadable_products()
 {
     global $wpdb;
     $downloads = array();
     if (is_user_logged_in()) {
         $user_info = get_userdata(get_current_user_id());
         $results = $wpdb->get_results($wpdb->prepare("SELECT * FROM " . $wpdb->prefix . "woocommerce_downloadable_product_permissions WHERE user_id = '%s';", get_current_user_id()));
         if ($results) {
             foreach ($results as $result) {
                 if ($result->order_id > 0) {
                     $order = new WC_Order($result->order_id);
                     if ($order->status != 'completed' && $order->status != 'processing') {
                         continue;
                     }
                     $product_post = get_post($result->product_id);
                     if (!$product_post) {
                         continue;
                     }
                     if ($product_post->post_type == 'product_variation') {
                         $_product = new WC_Product_Variation($result->product_id);
                     } else {
                         $_product = new WC_Product($result->product_id);
                     }
                     if ($_product->exists()) {
                         $download_name = $_product->get_title();
                     } else {
                         $download_name = '#' . $result->product_id;
                     }
                     $downloads[] = array('download_url' => add_query_arg('download_file', $result->product_id, add_query_arg('order', $result->order_key, add_query_arg('email', $result->user_email, home_url()))), 'product_id' => $result->product_id, 'download_name' => $download_name, 'order_id' => $order->id, 'order_key' => $order->order_key, 'downloads_remaining' => $result->downloads_remaining);
                 }
             }
         }
     }
     return apply_filters('woocommerce_customer_get_downloadable_products', $downloads);
 }