<?php

/**

 * 获取网站搜索的热门关键字

 *

 * @version        $Id: hotwords.lib.php 1 9:29 2010年7月6日Z tianya $

 * @package        DedeCMS.Taglib

 * @copyright      Copyright (c) 2007 - 2010, DesDev, Inc.

 * @license        http://help.dedecms.com/usersguide/license.html

 * @link           http://www.dedecms.com

 */

 

/*>>dede>>

<name>热门关键词</name>

<type>全局标记</type>

<for>V55,V56,V57</for>

<description>获取网站搜索的热门关键字</description>

<demo>

{dede:hotwords /}

</demo>

<attributes>

    <iterm>num:关键词数目</iterm> 

    <iterm>subday:天数</iterm>

    <iterm>maxlength:关键词最大长度</iterm>

</attributes> 

>>dede>>*/

 

function lib_hotwords(&$ctag,&$refObj)

{

    global $cfg_phpurl,$dsql;



    $attlist="num|6,subday|365,maxlength|16";

    FillAttsDefault($ctag->CAttribute->Items,$attlist);

    extract($ctag->CAttribute->Items, EXTR_SKIP);



    $nowtime = time();

    if(empty($subday)) $subday = 365;

    if(empty($num)) $num = 6;

    if(empty($maxlength)) $maxlength = 20;

    $maxlength = $maxlength+1;

    $mintime = $nowtime - ($subday * 24 * 3600);

	// 2011-6-28 根据论坛反馈(http://bbs.dedecms.com/371416.html)，修正SQL大小写问题(by:织梦的鱼)

    $dsql->SetQuery("SELECT keyword FROM `#@__search_keywords` WHERE lasttime>$mintime AND length(keyword)<$maxlength ORDER BY count DESC LIMIT 0,$num");

    $dsql->Execute('hw');

    $hotword = '';

    while($row=$dsql->GetArray('hw')){

        $hotword .= "　<a href='".$cfg_phpurl."/search.php?keyword=".urlencode($row['keyword'])."'>".$row['keyword']."</a> ";

    }

    return $hotword;

}