积分商城里添加个“金额+积分”的兑换功能，（高手略过）虽然没有在商品详情页的“金额+积分”功能那么实用，但是用这个应急一下下也是可以考虑考虑的。呵呵……
好吧，进入正题：
1、执行SQL语句：ALTER TABLE `ecs_exchange_goods` ADD `goods_price` DECIMAL (10,2) default 0.00 NOT NULL
2、修改admin/templates/exchange_goods_info.htm页：找到
“<td><input type="text" name="exchange_integral" maxlength="60" size="20" value="{$goods.exchange_integral}" />{$lang.require_field}<br /><span class="notice-span" {if $help_open}style="display:block" {else} style="display:none" {/if} id="noticepackagePrice">{$lang.notice_integral}</span></td>”
在下面添加：
<!--积分商城加上金额二次开发-->
<tr>
<td class="narrow-label"><a href="javascript:showNotice('noticepackagePrice');" title="{$lang.form_notice}"><img src="images/notice.gif" width="16" height="16" border="0" alt="{$lang.form_notice}"></a>{$lang.goods_price}</td>
<td><input type="text" name="goods_price" maxlength="60" size="20" value="{$goods.goods_price}" />{$lang.require_field}<br /><span class="notice-span" {if $help_open}style="display:block" {else} style="display:none" {/if} id="noticepackagePrice">{$lang.notice_price}</span></td>
</tr>
<!--end-->
3、修改admin/templates/exchange_goods_info.htm页，找到：
<th><a href="javascript:listTable.sort('exchange_integral'); ">{$lang.exchange_integral}</a>{$sort_exchange_integral}</th>
在下面添加：
<!--积分商城加上金额二次开发-->
<th><a href="javascript:listTable.sort('exchange_price'); ">{$lang.goods_price}</a>{$sort_exchange_price}</th>
<!--end-->
再找到：
<td align="center"><span onclick="listTable.edit(this, 'edit_exchange_integral', {$list.goods_id})">{$list.exchange_integral}</span></td> 在它下面添加：
<!--积分商城加上金额二次开发-->
<td align="center"><span onclick="listTable.edit(this, 'edit_exchange_price', {$list.goods_id})">{$list.goods_price}</span></td>
<!--end-->
4、修改admin/exchange_goods.php页：找到
$sql = "INSERT INTO ".$ecs->table('exchange_goods')."(goods_id, exchange_integral, goods_price, is_exchange, is_hot) ".
"VALUES ('$_POST[goods_id]', '$_POST[exchange_integral]', '$_POST[goods_price]', '$_POST[is_exchange]', '$_POST[is_hot]')"
注意上面是添加了：goods_price, 和 '$_POST[goods_price]',的；
找到：$sql = "SELECT eg.goods_id, eg.exchange_integral,eg.is_exchange, eg.is_hot,eg.goods_price, g.goods_name ".
注意上面是添加了eg.goods_price的；
找到：if ($exc->edit("exchange_integral='$_POST[exchange_integral]',goods_price='$_POST[goods_price]', is_exchange='$_POST[is_exchange]', is_hot='$_POST[is_hot]' ", $_POST['goods_id']))里面也是添加了goods_price='$_POST[goods_price]'的。
最后找到elseif ($_REQUEST['act'] == 'edit_exchange_integral') 这个条件语句，在这个条件语句的下面添加一个条件语句：
//积分商城二次开发添加
elseif ($_REQUEST['act'] == 'edit_exchange_price')
{
check_authz_json('exchange_goods');

$id = intval($_POST['id']);
$exchange_integral = floatval($_POST['val']);

if ($exchange_integral < 0 || $exchange_integral == 0 && $_POST['val'] != "$goods_price")
{
make_json_error($_LANG['exchange_integral_invalid']);
}
else
{
if ($exc->edit("goods_price = '$exchange_integral'", $id))
{
clear_cache_files();
admin_log($id, 'edit', 'goods_price');
make_json_result(stripslashes($exchange_integral));
}
else
{
make_json_error($db->error());
}
}
}
//二次开发结束
5、修改根目录下的exchange.php页面：
找到'market_price' => $goods['market_price'],在它的下面把'goods_price' => 0 改成：'goods_price' => $goods['goods_price'],
找到 $sql = 'SELECT g.goods_id, g.goods_name, g.goods_name_style, eg.exchange_integral ' .在最后添加上eg.goods_price;
再找到：$sql = 'SELECT g.*, c.measure_unit, b.brand_id, b.brand_name AS goods_brand, eg.exchange_integral eg.is_exchange ' .在后面添加上eg.goods_price;
6、修改exchange_goods.dwt页面：找到
<li class="clearfix">
<dd>
<strong>{$lang.exchange_integral}</strong><font class="shop">{$goods.exchange_integral}</font><br />
</dd>
</li>
在下面添加：
<!--积分商城二次开发-->
<li class="clearfix">
<dd>
<strong>{$lang.exchange_price}</strong><font class="shop">
<!--{if $goods.goods_price >0}--> {$goods.goods_price}元+<!--{/if}-->{$goods.exchange_integral}积分</font><br />
</dd>
</li>
<!--二次开发结束-->
最后一步是在语言文件夹中的languages/zh_cn/common.php 的$_LANG['exchange_integral'] = '消耗积分：';
下面添加：$_LANG['exchange_price'] = '积分套餐：';
与 /admin/exchange_goods.php中的$_LANG['exchange_integral'] = '使用积分值';
下面加上：$_LANG['goods_price'] = '还需要的价格';