ecshop分词搜索和商品关键字红色的实现方法

最近在用ECSHOP做一个商城，发现ECSHOP的模糊搜索要求太高，需要加入and、空格、加号等，客户搜索的时候不可能这样操作。所以想对搜索功能进行改进，可是在网上没有找到这样的插件，有收费的，结果要2000大元。考虑了一下申请经费的麻烦，自己费点儿力气做一个吧。
考虑到工期的问题，采用了织梦的分词算法，搜索效果虽然不是特别理想，但是这么短的时间也只能这样了。
在此分享给没钱又着急的朋友，需要用到的文件在文章末尾提供下载，大家下载后也可以直接覆盖使用。
一、ECSHOP联想下拉框
1、修改page_header.lbi模版文件，将搜索文本框修改为：

<input name="keywords" type="text" id="keyword" value="<!--{if ($search_keywords neq "")}{$search_keywords|escape}--><!--{else}-->ecshop<!--{/if}-->" class="search-input" onfocus="if(this.value=='ecshop'){this.value='';this.style.color='#000';}" onblur="closediv();if(this.value==''){this.value='ecshop';this.style.color='#999';}" style="color:#999;" onkeyup="keyupdeal(event,this.value);" onkeydown="keydowndeal(event);" onclick="keyupdeal(event,this.value);" autocomplete="off" />
<div id="search_suggest" style onmouseover='javascript:_over();' onmouseout='javascript:_out();'></div>

嵌入js文件

<script type="text/javascript" src="/js/suggest.js"></script>

嵌入css文件

<link href="/themes/default/images/css.css" rel="stylesheet" type="text/css">

2、根目录添加php文件search_suggest.php文件
二、分词搜索
根目录增加织梦分词算法函数和词库：lib_splitword_full.php和dededic.csv
1、修改search.php文件第196行

/* 检查关键字中是否有空格，如果存在就是并 */
$arr = explode(' ', $_REQUEST['keywords']);
$operator = " AND ";

改为：

/*调用织梦分词功能-start*/
require("lib_splitword_full.php");
$sp = new SplitWord();
$fenci=$sp->SplitRMM($_REQUEST['keywords']);
$sp->Clear();
/* 织梦分词后是使用空格进行划分，所以仍可使用ecshop的按照空格拆分为数组功能：检查关键字中是否有空格，如果存在就是并 */
$arr = explode(' ', $fenci);
$arr = array_reverse($arr);//将数组倒序排列，并插入完整关键字到数组末尾
$arr[count($arr)]=$_REQUEST['keywords'];
$arr = array_reverse($arr);//再次将数组倒序，使完整关键字可以第一个被检索
array_pop($arr);//删除织梦分词产生的数组之后一个元素为空格
$operator = " and ";//sql检索语句使用union联合检索
$ hong = $arr;//$arr数组在飘红的时候已经被产品列表占用了，所以另外赋值给一个数组备用。
/*调用织梦分词功能-end*/

2、修改search.php文件第382行到403行

/* 获得符合条件的商品总数 */
$sql = "SELECT COUNT(*) FROM " .$ecs->table('goods'). " AS g ".
"WHERE g.is_delete = 0 AND g.is_on_sale = 1 AND g.is_alone_sale = 1 $attr_in ".
"AND (( 1 " . $categories . $keywords . $brand . $min_price . $max_price . $intro . $outstock ." ) ".$tag_where." )";
$count = $db->getOne($sql);
$max_page = ($count> 0) ? ceil($count / $size) : 1;
if ($page > $max_page)
{
$page = $max_page;
}
/* 查询商品 */
$sql = "SELECT g.goods_id, g.goods_name, g.market_price, g.is_new, g.is_best, g.is_hot, g.shop_price AS org_price, ".
"IFNULL(mp.user_price, g.shop_price * '$_SESSION[discount]') AS shop_price, ".
"g.promote_price, g.promote_start_date, g.promote_end_date, g.goods_thumb, g.goods_img, g.goods_brief, g.goods_type ".
"FROM " .$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]' ".
"WHERE g.is_delete = 0 AND g.is_on_sale = 1 AND g.is_alone_sale = 1 $attr_in ".
"AND (( 1 " . $categories . $keywords . $brand . $min_price . $max_price . $intro . $outstock . " ) ".$tag_where." ) " .
"ORDER BY $sort $order";

修改为：

/*sun04zh3-20130905-调用织梦分词功能-更改ecshop的sql语句采用union方式-start*/
/*因为后面要用union生成数据集表，所以先根据拆分出的关键词，生成union所需的所有sql语句，*/
$select = "(";
foreach($arr AS $se => $t)
{
$select .= "SELECT click_count,goods_sn,is_alone_sale,is_on_sale,is_delete,goods_id, goods_name, market_price, is_new, is_best, is_hot, shop_price AS org_price, shop_price ,promote_price, promote_start_date, promote_end_date, goods_thumb, goods_img, goods_brief, goods_type FROM(select click_count,goods_sn,is_alone_sale,is_on_sale,is_delete,goods_id, goods_name, market_price, is_new, is_best, is_hot, shop_price AS org_price, shop_price ,promote_price, promote_start_date, promote_end_date, goods_thumb, goods_img, goods_brief, goods_type from".$ecs->table('goods')." where goods_name like '%$t%' order by click_count desc) AS P$se";//第一个关键词是完整关键词
if($se==0)//插入一个当所有拆分关键词在商品名称中为and时的sql语句
{
$select .= " UNION SELECT click_count,goods_sn,is_alone_sale,is_on_sale,is_delete,goods_id, goods_name, market_price, is_new, is_best, is_hot, shop_price AS org_price, shop_price ,promote_price, promote_start_date, promote_end_date, goods_thumb, goods_img, goods_brief, goods_type FROM(select click_count,goods_sn,is_alone_sale,is_on_sale,is_delete,goods_id, goods_name, market_price, is_new, is_best, is_hot, shop_price AS org_price, shop_price ,promote_price, promote_start_date, promote_end_date, goods_thumb, goods_img, goods_brief, goods_type from".$ecs->table('goods')." where 1 $keywords order by click_count desc) AS Pa";
}
if($se<count($arr)-1)//在每条select语句后增加union，之后一个不加，所以$se小于元素数量-1
{
$select.=" UNION ";
}
}
$select.=")";
if($select=="()")//当关键词为空时，没有拆分关键词，所以用于union的$select为空，仍需要调用goods表
{
$sql = "SELECT COUNT(*) FROM ".$ecs->table("goods")." AS P " .
"WHERE is_delete = 0 AND is_on_sale = 1 AND is_alone_sale = 1 " ;
}
else
{
/* 获得符合条件的商品总数 */
$sql = "SELECT COUNT(*) FROM $select AS P " .
"WHERE is_delete = 0 AND is_on_sale = 1 AND is_alone_sale = 1 " ;
}
$count = $db->getOne($sql);
$max_page = ($count> 0) ? ceil($count / $size) : 1;
if ($page > $max_page)
{
$page = $max_page;
}
if($select=="()")//当关键词为空时，没有拆分关键词，所以用于union的$select为空，仍需要调用goods表
{
/* 查询商品 */
$sql = "SELECT click_count,goods_sn,is_alone_sale,is_on_sale,is_delete,goods_id, goods_name, market_price, is_new, is_best, is_hot, shop_price AS org_price, shop_price ,promote_price, promote_start_date, promote_end_date, goods_thumb, goods_img, goods_brief, goods_type ".
"FROM ".$ecs->table("goods")." AS P " .
"WHERE is_delete = 0 AND is_on_sale = 1 AND is_alone_sale = 1 " ;
}
else
{
/* 查询商品 */
$sql = "SELECT click_count,goods_sn,is_alone_sale,is_on_sale,is_delete,goods_id, goods_name, market_price, is_new, is_best, is_hot, shop_price AS org_price, shop_price ,promote_price, promote_start_date, promote_end_date, goods_thumb, goods_img, goods_brief, goods_type ".
"FROM $select AS P " .
"WHERE is_delete = 0 AND is_on_sale = 1 AND is_alone_sale = 1 " ;
}

三、搜索出的产品列表产品关键词飘红功能：
1、修改search.php文件第473行到480行

if($display == 'grid')
{
$arr[$row['goods_id']]['goods_name'] = $GLOBALS['_CFG']['goods_name_length'] > 0 ? sub_str($row['goods_name'], $GLOBALS['_CFG']['goods_name_length']) : $row['goods_name'];
}
else
{
$arr[$row['goods_id']]['goods_name'] = $row['goods_name'];
}

修改为：

/*根据分词对产品名称进行替换-start*/
$tihuan=$row["goods_name"];
foreach($ hong AS $ph_count => $ph)
{
$tihuan = str_replace($ph,"<b style='color:#d90000'>$ph</b>",$tihuan);
}
$arr[$row['goods_id']]['goods_name'] = $row['goods_name'];//因为前台用到没有替换的商品名称，所以保留goods_name值
$arr[$row['goods_id']]['tihuan'] = $tihuan;
/*根据分词对产品名称进行替换-end*/

2、修改search.dwt模板文件
将显示商品名称的地方替换为：

<p><a href="{$goods.url}" title="{$goods.name|escape:html}">{$goods.tihuan}</a></p>

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