$conn=mysql_connect($mysql_host,$mysql_user,$mysql_password) or die('连接服务器出错');
mysql_select_db($mysql_db) or die("选择数据库教程出错");
mysql_query("set names 'gbk'");
function table($t)
{
 global $mysql_table_prefix;
 return $mysql_table_prefix.$t;
}

$sql="select * from ".table('keywords')."  where 1=1 ";
$sql2="select count(*) from ".table('keywords')."  where 1=1 ";
$py=trim($_request['py']);
if($act=="search" and !empty($_post['s1']))
{
 $s1=trim($_post['s1']);//获取搜索字
 $sql .=" and (k1='$s1' or k2='$s1') ";
 $sql2 .=" and (k1='$s1' or k2='$s1') ";
}
elseif(!empty($py))
{
 $sql .=" and pinyin='$py' ";
 $sql2.=" and pinyin='$py' ";
}

$sql .=" order by pinyin ";
$rscount=mysql_query($sql2);
$rscount=@mysql_fetch_array($rscount);
$rscount=$rscount[0];//获取总记录数

$page=trim($_get['page']);//当前页数
$pagesize=30;//每页记录数
$pagecount=ceil($rscount/$pagesize);//获取总页数
$pageurl="";
if($page<=1)
{
 $page=1;
 $pageurl.=" 首页 上一页";
}else
{
 $pageurl .=" <a href='?page=1&py=".$py."'>首页</a> &nbsp;<a href='?py=".$py."&page=".($page-1)."'>上一页</a>";
}
if($page>=$pagecount)
{
 $page=$pagecount;
 $pageurl .=" 下一页&nbsp; 尾页";
}else
{
 $pageurl .=" <a href='?py=".$py."&page=".($page+1)."'>下一页</a> &nbsp;<a href='?py=".$py."&page=".$pagecount."'>尾页</a>";
}

$start_rs=($page-1)*$pagesize;//开始
$end_rs=$page*$pagesize;//结束
$sql .=" limit {$start_rs},{$end_rs} ";
$res=mysql_query($sql);

?>