在zencart首页的最新商品上面要添加"购买"按钮，可以参考最模板此教程:
/includes/templates/template_default/templates l_product_info_display.php
这个文件中购买按钮的代码。
需要修改的代码在：
/includes/modules/new_products.php
商店首页上显示的商品的内容都在变量$list_box_contents中，加上需要的内容就可以了。
$list_box_contents[$row][$col] = array('align' => 'center',
                                             'params' => 'class="smallText" width="' . $col_width . '%" valign="top"',
                                             'text' => '<a href="' . zen_href_link(zen_get_info_page($new_products->fields['products_id']), 'products_id=' . $new_products->fields['products_id']) . '">' . zen_image(DIR_WS_IMAGES . $new_products->fields['products_image'], $new_products->fields['products_name'], IMAGE_PRODUCT_NEW_WIDTH, IMAGE_PRODUCT_NEW_HEIGHT) . '</a><br /><a href="' . zen_href_link(zen_get_info_page($new_products->fields['products_id']), 'products_id=' . $new_products->fields['products_id']) . '">' . $new_products->fields['products_name'] . '</a><br />' . $products_price); 

改为：
if ($products_qty_box_status == '0' or $products_quantity_order_max== '1') {
      // hide the quantity box and default to 1
      $the_button = '<input type="hidden" name="cart_quantity" value="1" />' . zen_draw_hidden_field('products_id', (int)$new_products->fields['products_id']) . zen_image_submit(BUTTON_IMAGE_IN_CART, BUTTON_IN_CART_ALT);
      } else {
      // show the quantity box
      $the_button = PRODUCTS_ORDER_QTY_TEXT . '<input type="text" name="cart_quantity" value="' . (zen_get_buy_now_qty($new_products->fields['products_id'])) . '" maxlength="6" size="4" /><br />' . zen_get_products_quantity_min_units_display((int)$new_products->fields['products_id']) . '<br />' . zen_draw_hidden_field('products_id', (int)$new_products->fields['products_id']) . zen_image_submit(BUTTON_IMAGE_IN_CART, BUTTON_IN_CART_ALT);
      };
       
      $list_box_contents[$row][$col] = array('align' => 'center',
                                             'params' => 'class="smallText" style="width:'  . $col_width . '%;float:left" valign="top"',
                                             'text' => '<a href="' . zen_href_link(zen_get_info_page($new_products->fields['products_id']), 'products_id=' . $new_products->fields['products_id']) . '">' . zen_image(DIR_WS_IMAGES . $new_products->fields['products_image'], $new_products->fields['products_name'], IMAGE_PRODUCT_NEW_WIDTH, IMAGE_PRODUCT_NEW_HEIGHT) . '</a><br /><div class="border_line01"><strong>Style: <a class="ab" href="' . zen_href_link(zen_get_info_page($new_products->fields['products_id']), 'products_id=' . $new_products->fields['products_id']) . '">' . $new_products->fields['products_name'] . '</a><strong></div><div class="border_line01">Our Price: <span class="colorr">' . $products_price  . '</span></div>' . zen_draw_form('cart_quantity', zen_href_link(zen_get_info_page($new_products->fields['products_id']), zen_get_all_get_params(array('action')). 'action=add_product'), 'post', 'enctype="multipart/form-data"') . zen_get_buy_now_button($new_products->fields['products_id'], $the_button) . '<a href="' .zen_href_link(zen_get_info_page($new_products->fields['products_id']), 'products_id=' . $new_products->fields['products_id']) . '">more</a></form><br /><br /><br />');