ecshop首页显示分类精品新品热销特价等商品的实现方法

/**
* 取指定分类ID及类型的商品信息
* @access public
* @param string $cat_id 分类ID
* @param string $num 显示商品数量
* @param string $cat_type 显示商品类型 new新品，hot热销,best为精品,promote特价
* @return array
*/
function index_get_cat_id_goods_list($cat_id = '', $num = '',$cat_type='')
{
$sql = 'Select g.goods_id, g.cat_id,c.parent_id, g.goods_name, g.goods_name_style, g.market_price, g.shop_price AS org_price, g.promote_price, ' .
"IFNULL(mp.user_price, g.shop_price * '$_SESSION[discount]') AS shop_price, ".
"promote_start_date, promote_end_date, g.goods_brief, g.goods_thumb, goods_img, " .
"g.is_best, g.is_new, g.is_hot, g.is_promote " .
'FROM ' . $GLOBALS['ecs']->table('goods') . ' AS g ' .
'LEFT JOIN ' . $GLOBALS['ecs']->table('category') . ' AS c ON c.cat_id = g.cat_id ' .
"LEFT JOIN " . $GLOBALS['ecs']->table('member_price') . " AS mp ".
"ON mp.goods_id = g.goods_id AND mp.user_rank = '$_SESSION[user_rank]' ".
"Where g.is_on_sale = 1 AND g.is_alone_sale = 1 AND g.is_delete = 0 ".
$sql .= " AND (c.parent_id =" . $cat_id. " or g.cat_id = " . $cat_id ." or g.cat_id ". db_create_in(array_unique(array_merge(array($cat_id), array_keys(cat_list($cat_id, 0, false))))) .")";
if($cat_type!=''){
$sql .=" and is_".$cat_type."=1";
}else{
$sql .=" and is_best=0 and is_new=0 and is_hot=0 and is_promote=0";
}
$sql .= " order by g.goods_id desc LIMIT $num";
$res = $GLOBALS['db']->getAll($sql);
$goods = array();
foreach ($res AS $idx => $row)
{
$goods[$idx]['id'] = $row['article_id'];
$goods[$idx]['id'] = $row['goods_id'];
$goods[$idx]['name'] = $row['goods_name'];
$goods[$idx]['brief'] = $row['goods_brief'];
$goods[$idx]['brand_name'] = $row['brand_name'];
$goods[$idx]['goods_style_name'] = add_style($row['goods_name'],$row['goods_name_style']);
$goods[$idx]['short_name'] = $GLOBALS['_CFG']['goods_name_length'] > 0 ?
sub_str($row['goods_name'], $GLOBALS['_CFG']['goods_name_length']) : $row['goods_name'];
$goods[$idx]['short_style_name'] = add_style($goods[$idx]['short_name'],$row['goods_name_style']);
$goods[$idx]['market_price'] = price_format($row['market_price']);
$goods[$idx]['shop_price'] = price_format($row['shop_price']);
$goods[$idx]['thumb'] = empty($row['goods_thumb']) ? $GLOBALS['_CFG']['no_picture'] : $row['goods_thumb'];
$goods[$idx]['goods_img'] = empty($row['goods_img']) ? $GLOBALS['_CFG']['no_picture'] : $row['goods_img'];
$goods[$idx]['url'] = build_uri('goods', array('gid' => $row['goods_id']), $row['goods_name']);
}
return $goods;
}

// new新品，hot热销,best为精品,promote特价
$smarty->assign('cat_id1_new_goods', index_get_cat_id_goods_list(1,5));
$smarty->assign('cat_id1_hot_goods', index_get_cat_id_goods_list(1,2,’hot’));