ecshop教程：显示某商品销售累计效果的实现代码

方案如下：  修改 includes/lib_insert.php 文件，  增加一个函数    复制代码代码如下:  /**  * 调用某商品的累积售出  */  function insert_goods_sells($arr)  {  $sql = 'SELECT SUM(goods_number) AS number ' .  ' FROM ' . $GLOBALS['ecs']->table('order_goods') ." AS og , " . $GLOBALS['ecs']->table('order_info') ." AS o ".  " WHERE og.order_id = o.order_id and og.goods_id=".$arr['goods_id'];  $row = $GLOBALS['db']->GetRow($sql);  if ($row)  {  $number = intval($row['number']);  }  else  {  $number = 0;  }  return $number;  }    修改模板下goods.dwt文件  增加一行代码  <strong>累计售出：</strong>{insert name='goods_sells' goods_id=$id}{$goods.measure_unit}