ecshop中的浏览历史
不难看出,在你每次浏览一件商品的同时,会在左侧中记录您的浏览记录,在ecshop中是通过cookie来记录的,在goods.php里可以查到如下代码:
- if (!emptyempty($_COOKIE['ECS']['history']))
- {
- $history = explode(',', $_COOKIE['ECS']['history']);
- array_unshift($history, $goods_id);
- $history = array_unique($history);
- while (count($history) > $_CFG['history_number'])
- {
- array_pop($history);
- }
- setcookie('ECS[history]', implode(',', $history), gmtime() + 3600 * 24 * 30);
- }
- else
- {
- setcookie('ECS[history]', $goods_id, gmtime() + 3600 * 24 * 30);
- }
每一次浏览,都会记录$good_id(商品的id),放到cookie里.
在模版里goods.dwt里是引用了 在history.lbi里可以看到 {insert name='history'},基本上学过smarty的都知道,这是局部不缓冲用到的,那么它肯定存在一个方法:insert_history（）,果然,在lib_insert.php中找到了,其实lib_insert.php 就是一个动态内容函数库.
- function insert_history()
- {
- $str = '';
- if (!emptyempty($_COOKIE['ECS']['history']))
- {
- $where = db_create_in($_COOKIE['ECS']['history'], 'goods_id');
- $sql = 'SELECT goods_id, goods_name FROM ' . $GLOBALS['ecs']->table('goods') .
- " WHERE $where AND is_on_sale = 1 AND is_alone_sale = 1 AND is_delete = 0";
- $query = $GLOBALS['db']->query($sql);
- $res = array();
- while ($row = $GLOBALS['db']->fetch_array($query))
- {
- $res[$row['goods_id']] = $row;
- }
- $tureorder = explode(',', $_COOKIE['ECS']['history']);
- foreach ($tureorder AS $key => $val)
- {
- $goods_name = htmlspecialchars($res[$val]['goods_name']);
- if ($goods_name)
- {
- $short_name = $GLOBALS['_CFG']['goods_name_length'] > 0 ? sub_str($goods_name, $GLOBALS['_CFG']['goods_name_length']) : $goods_name;
- $str .= '
- ' . $short_name . '
- ';
- }
- }
- }
- return $str;
- }
其实该函数返回的字符串就是history.lbi里的所需内容,需要说明一下的是像代码中类似 $_CFG['history_number'],一般是系统定义的常量或是数据库中保存的字段,查了一下发现是在 ecs_shop_config表里,剩下的就是看一下代码,怎么通过商品的id,获取商品的信息了,不再多说,提醒一下,上面用到了几个针对数据函数,如array_unshift,array_unique还是经常遇到的,顺便巩固一下.
