0)    {        while (list($key, $val) = each($out))         {            if(in_array($key,$wd))            {                      $keyword=decodekeyword($val);             }        }    }    return $keyword;}//设置不同来源的搜索变量名function GetTT($TID){    $arr=array(    "1"=>array("wd","word"),//百度搜索时候的关键字变量名    "2"=>array("q")         //谷歌搜索时候的关键字变量名    );    return $arr[$TID];}//编码转换function decodekeyword($kval){          $charset=mb_detect_encoding($kval,array("ASCII",'UTF-8',"GB2312","GBK",'BIG5'));     if($charset!='UTF-8')    {        return iconv($charset,'UTF-8',$kval);    }    else    {        return $kval;    }}$log_arr['reurl']    =    urlencode($_GET['referrer']);//来源url$tmp_reurl                 = parse_url(urldecode($log_arr['reurl']));$kwd = '';if(stristr($tmp_reurl['host'],'baidu') == true || stristr($tmp_reurl['host'],'BAIDU') == true){    $log_arr['lyid'] = 1;    $kwd = GetKwd(1,$tmp_reurl['query']);}elseif (stristr($tmp_reurl['host'],'google') == true || stristr($tmp_reurl['host'],'GOOGLE') == true){    $log_arr['lyid'] = 2;    $kwd = GetKwd(2,$tmp_reurl['query']);}$log_arr['kwd'] = $kwd;