if (empty($seacher))      
{
        $result=mysql_query("SELECT * FROM HBDX_BLUE ".$show);    
        $num_max=mysql_num_rows($result); 

        $result=mysql_query("SELECT * FROM HBDX_BLUE ".$show." ORDER BY TOP ".$hot." LIMIT $startCount,$perNumber"); 
}
else
{        
        $datetime = date("Y-m-d H:i:s");
        $seacherresult = mysql_query("SELECT * FROM HBDX_SEACHER WHERE SEACHERDATA = '".$seacher."'"); /*查询SEACHERDATA表内的内容输出到seacherresult变量*/
        $seachernum = mysql_num_rows($seacherresult);  /*统计搜索次数*/
        if($seachernum == 0)
        {
                mysql_query("INSERT INTO HBDX_SEACHER (SEACHERDATA,SEACHERNUM,DATETIME) VALUES ('$seacher',1,'$datetime')");  /*查询热门搜索关键词次数为0后，将该关键字写入表SEACHERDATA内*/
        }
        else
        {
                $row = mysql_fetch_array($seacherresult);  /*遍历seacherresult变量结果赋值到row中*/
                mysql_query("UPDATE HBDX_SEACHER SET SEACHERNUM = '".($row['SEACHERNUM'] + 1)."' WHERE SEACHERDATA = '".$seacher."'");
        }

        $result=mysql_query("SELECT * FROM HBDX_BLUE WHERE FILETITLE LIKE '%".$seacher."%'"); 
        $num_max=mysql_num_rows($result); 

        $result=mysql_query("SELECT * FROM HBDX_BLUE WHERE FILETITLE LIKE '%".$seacher."%' OR FILETAG LIKE '%".$seacher."%' ORDER BY TOP,ID DESC LIMIT $startCount,$perNumber"); 
        $num=mysql_num_rows($result); 
}