WC_Product::get_download_expiry PHP Method

    public function get_download_expiry($context = 'view')
    {
        return $this->get_prop('download_expiry', $context);
    }

 /**
  * Get an individual variation's data
  *
  * @since 2.1
  * @param WC_Product $product
  * @return array
  */
 private function get_variation_data($product)
 {
     $variations = array();
     foreach ($product->get_children() as $child_id) {
         $variation = wc_get_product($child_id);
         if (!$variation->exists()) {
             continue;
         }
         $variations[] = array('id' => $variation->get_id(), 'created_at' => $this->server->format_datetime($variation->get_date_created(), false, true), 'updated_at' => $this->server->format_datetime($variation->get_date_modified(), false, true), 'downloadable' => $variation->is_downloadable(), 'virtual' => $variation->is_virtual(), 'permalink' => $variation->get_permalink(), 'sku' => $variation->get_sku(), 'price' => wc_format_decimal($variation->get_price(), 2), 'regular_price' => wc_format_decimal($variation->get_regular_price(), 2), 'sale_price' => $variation->get_sale_price() ? wc_format_decimal($variation->get_sale_price(), 2) : null, 'taxable' => $variation->is_taxable(), 'tax_status' => $variation->get_tax_status(), 'tax_class' => $variation->get_tax_class(), 'stock_quantity' => (int) $variation->get_stock_quantity(), 'in_stock' => $variation->is_in_stock(), 'backordered' => $variation->is_on_backorder(), 'purchaseable' => $variation->is_purchasable(), 'visible' => $variation->variation_is_visible(), 'on_sale' => $variation->is_on_sale(), 'weight' => $variation->get_weight() ? wc_format_decimal($variation->get_weight(), 2) : null, 'dimensions' => array('length' => $variation->get_length(), 'width' => $variation->get_width(), 'height' => $variation->get_height(), 'unit' => get_option('woocommerce_dimension_unit')), 'shipping_class' => $variation->get_shipping_class(), 'shipping_class_id' => 0 !== $variation->get_shipping_class_id() ? $variation->get_shipping_class_id() : null, 'image' => $this->get_images($variation), 'attributes' => $this->get_attributes($variation), 'downloads' => $this->get_downloads($variation), 'download_limit' => (int) $product->get_download_limit(), 'download_expiry' => (int) $product->get_download_expiry());
     }
     return $variations;
 }