关于ecshop的smarty问题-PHP-Tutorial-php.cn

这是ecshop手机端的index模板的一段代码
define('IN_ECS', true);require(dirname(__FILE__) . '/includes/init.php');$type = !empty($_GET['type']) ? $_GET['type'] : 'best';if ($type != 'best' && $type != 'promote' && $type != 'hot' && $type != 'new'){	$type = 'best';}$smarty->assign('type', $type);if (empty($_GET['order_price'])){	$order_rule = 'ORDER BY shop_price ASC, g.last_update DESC';}else{	$order_rule = 'ORDER BY shop_price DESC, g.last_update DESC';}if ($type == 'promote'){	$goods = wap_get_promote_goods($order_rule);}else{	$goods = wap_get_recommend_goods($type, $order_rule);}$num = count($goods);if ($num > 0){	foreach ($goods as $key => $data)	{		$sort_array[$data['id']] = $key;	}	$page_num = '10';	$page = !empty($_GET['page']) ? intval($_GET['page']) : 1;	$pages = ceil($num / $page_num);	if ($page <= 0)	{		$page = 1;	}	if ($pages == 0)	{		$pages = 1;	}	if ($page > $pages)	{		$page = $pages;	}	$i = 1;	foreach ($sort_array as $goods_key)	{		if (($i > ($page_num * ($page - 1 ))) && ($i <= ($page_num * $page)))		{			$price = empty($goods[$goods_key]['promote_price_org']) ? $goods[$goods_key]['shop_price'] : $goods[$goods_key]['promote_price'];			//$wml_data .= "<a href='goods.php?id={}'>".encode_output($goods[$goods_key]['name'])."</a>[".encode_output($price)."]<br/>";			$goods_data[] = array('i' => $i , 'price' => encode_output($price) , 'id' => $goods[$goods_key]['id'] , 'name' => encode_output($goods[$goods_key]['name']), 'thumb' => $goods[$goods_key]['thumb']);//16:43 2013-07-16		}		$i++;	}	$smarty->assign('goods_data', $goods_data);	$pagebar = get_wap_pager($num, $page_num, $page, 'goods_list.php?type='.$type.'&order_price='.(empty($order_price)?0:$order_price), 'page');	$smarty->assign('pagebar' , $pagebar);}$smarty->assign('footer', get_footer());$smarty->display('goods_list.html');function wap_get_recommend_goods($type = '', $order_rule = ''){	if (!in_array($type, array('best', 'new', 'hot')))	{		return array();	}	//取不同推荐对应的商品	static $type_goods = array();	if (empty($type_goods[$type]))	{		//初始化数据		$type_goods['best'] = array();		$type_goods['new'] = array();		$type_goods['hot'] = array();		$data = read_static_cache('recommend_goods');		if ($data === false)		{			$sql = 'SELECT g.goods_id, g.is_best, g.is_new, g.is_hot, g.is_promote, b.brand_name,g.sort_order ' .			   ' FROM ' . $GLOBALS['ecs']->table('goods') . ' AS g ' .			   ' LEFT JOIN ' . $GLOBALS['ecs']->table('brand') . ' AS b ON b.brand_id = g.brand_id ' .			   ' WHERE g.is_on_sale = 1 AND g.is_alone_sale = 1 AND g.is_delete = 0 AND (g.is_best = 1 OR g.is_new =1 OR g.is_hot = 1)'.			   ' ORDER BY g.sort_order, g.last_update DESC';			$goods_res = $GLOBALS['db']->getAll($sql);			//定义推荐,最新，热门，促销商品			$goods_data['best'] = array();			$goods_data['new'] = array();			$goods_data['hot'] = array();			$goods_data['brand'] = array();			if (!empty($goods_res))			{				foreach($goods_res as $data)				{					if ($data['is_best'] == 1)					{						$goods_data['best'][] = array('goods_id' => $data['goods_id'], 'sort_order' => $data['sort_order']);					}					if ($data['is_new'] == 1)					{						$goods_data['new'][] = array('goods_id' => $data['goods_id'], 'sort_order' => $data['sort_order']);					}					if ($data['is_hot'] == 1)					{						$goods_data['hot'][] = array('goods_id' => $data['goods_id'], 'sort_order' => $data['sort_order']);					}					if ($data['brand_name'] != '')					{						$goods_data['brand'][$data['goods_id']] = $data['brand_name'];					}				}			}			write_static_cache('recommend_goods', $goods_data);		}		else		{			$goods_data = $data;		}		$time = gmtime();		$order_type = $GLOBALS['_CFG']['recommend_order'];				static $type_array = array();		$type2lib = array('best'=>'recommend_best', 'new'=>'recommend_new', 'hot'=>'recommend_hot');		if (empty($type_array))		{			foreach($type2lib as $key => $data)			{				if (!empty($goods_data[$key]))				{					$data_count = count($goods_data[$key]);					$num = $data_count ;					if ($order_type == 0)					{						//usort($goods_data[$key], 'goods_sort');						$rand_key = array_slice($goods_data[$key], 0, $num);						foreach($rand_key as $key_data)						{							$type_array[$key][] = $key_data['goods_id'];						}					}					else					{						$rand_key = array_rand($goods_data[$key], $num);						if ($num == 1)						{							$type_array[$key][] = $goods_data[$key][$rand_key]['goods_id'];						}						else						{							foreach($rand_key as $key_data)							{								$type_array[$key][] = $goods_data[$key][$key_data]['goods_id'];							}						}					}				}				else				{					$type_array[$key] = array();				}			}		}		//取出所有符合条件的商品数据，并将结果存入对应的推荐类型数组中		$sql = 'SELECT g.goods_id, g.goods_name, g.goods_name_style, g.market_price, g.shop_price AS org_price, g.promote_price, ' .				"IFNULL(mp.user_price, g.shop_price * '$_SESSION[discount]') AS shop_price, ".				"promote_start_date, promote_end_date, g.goods_brief, g.goods_thumb, g.goods_img, RAND() AS rnd " .				'FROM ' . $GLOBALS['ecs']->table('goods') . ' AS g ' .				"LEFT JOIN " . $GLOBALS['ecs']->table('member_price') . " AS mp ".				"ON mp.goods_id = g.goods_id AND mp.user_rank = '$_SESSION[user_rank]' ";		$type_merge = array_merge($type_array['new'], $type_array['best'], $type_array['hot']);		$type_merge = array_unique($type_merge);		$sql .= ' WHERE g.goods_id ' . db_create_in($type_merge);		$order_rule = empty($order_rule) ? ' ORDER BY g.sort_order, g.last_update DESC' : $order_rule;		$sql .= $order_rule;		$result = $GLOBALS['db']->getAll($sql);		foreach ($result AS $idx => $row)		{			if ($row['promote_price'] > 0)			{				$promote_price = bargain_price($row['promote_price'], $row['promote_start_date'], $row['promote_end_date']);				$goods[$idx]['promote_price'] = $promote_price > 0 ? price_format($promote_price) : '';			}			else			{				$goods[$idx]['promote_price'] = '';			}			$goods[$idx]['id']		   = $row['goods_id'];			$goods[$idx]['name']		 = $row['goods_name'];			$goods[$idx]['brief']		= $row['goods_brief'];			$goods[$idx]['brand_name']   = isset($goods_data['brand'][$row['goods_id']]) ? $goods_data['brand'][$row['goods_id']] : '';			$goods[$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']		= get_image_path($row['goods_id'], $row['goods_thumb'], true);			$goods[$idx]['goods_img']	= get_image_path($row['goods_id'], $row['goods_img']);			$goods[$idx]['url']		  = build_uri('goods', array('gid' => $row['goods_id']), $row['goods_name']);			if (in_array($row['goods_id'], $type_array['best']))			{				$type_goods['best'][] = $goods[$idx];			}			if (in_array($row['goods_id'], $type_array['new']))			{				$type_goods['new'][] = $goods[$idx];			}			if (in_array($row['goods_id'], $type_array['hot']))			{				$type_goods['hot'][] = $goods[$idx];			}		}	}	return $type_goods[$type];}function wap_get_promote_goods($order_rule = ''){	$time = gmtime();	/* 取得促销lbi的数量限制 */	$sql = 'SELECT g.goods_id, g.goods_name, g.goods_name_style, g.market_price, g.shop_price AS org_price, g.promote_price, ' .				"IFNULL(mp.user_price, g.shop_price * '$_SESSION[discount]') AS shop_price, ".				"promote_start_date, promote_end_date, g.goods_brief, g.goods_thumb, goods_img, b.brand_name, " .				"g.is_best, g.is_new, g.is_hot, g.is_promote, RAND() AS rnd " .			'FROM ' . $GLOBALS['ecs']->table('goods') . ' AS g ' .			'LEFT JOIN ' . $GLOBALS['ecs']->table('brand') . ' AS b ON b.brand_id = g.brand_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 ' .			" AND g.is_promote = 1 AND promote_start_date <= '$time' AND promote_end_date >= '$time' ";	$order_rule = empty($order_rule) ? 'ORDER BY g.sort_order, g.last_update DESC' : $order_rule;	$sql .= $order_rule;	$result = $GLOBALS['db']->getAll($sql);	$goods = array();	foreach ($result AS $idx => $row)	{		if ($row['promote_price'] > 0)		{			$promote_price = bargain_price($row['promote_price'], $row['promote_start_date'], $row['promote_end_date']);			$goods[$idx]['promote_price'] = $promote_price > 0 ? price_format($promote_price) : '';		}		else		{			$goods[$idx]['promote_price'] = '';		}		$goods[$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']		= get_image_path($row['goods_id'], $row['goods_thumb'], true);		$goods[$idx]['goods_img']	= get_image_path($row['goods_id'], $row['goods_img']);		$goods[$idx]['url']		  = build_uri('goods', array('gid' => $row['goods_id']), $row['goods_name']);	}	return $goods;}
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这是业务代码，为什么index模板的$new_num会为0没有数据？