$wherelist=array();
$urlist=array();
if(!empty($_GET['title']))
{
$wherelist[]=" title like '%".$_GET['title']."%'";
$urllist[]="title=".$_GET['title'];
 
}
if(!empty($_GET['keywords']))
{
$wherelist[]=" keywords like '%".$_GET['keywords']."%'";
$urllist[]="keywords=".$_GET['keywords'];
}if(!empty($_GET['author']))
{
$wherelist[]=" author like '%".$_GET['author']."%'";
$urllist[]="author=".$_GET['author'];
}
$where="";
if(count($wherelist)>0)
{
$where=" where ".implode(' and ',$wherelist);
$url='&'.implode('&',$urllist);
}
//分页的实现原理
//1.获取数据表中总记录数
$sql="select count(*) from news $where ";
$result=mysql_query($sql);
$totalnum=mysql_num_rows($result);
//每页显示条数
$pagesize=5;
//总共有几页
$maxpage=ceil($totalnum/$pagesize);
$page=isset($_GET['page'])?$_GET['page']:1;
if($page <1)
{
$page=1;
}
if($page>$maxpage)
{
$page=$maxpage;
}
$limit=" limit ".($page-1)*$pagesize.",$pagesize";
$sql1="select * from news {$where} {$limit}";
 
//$sql1="select * from news {$where} {$limit}";
$res=mysql_query($sql1);
 
?>

标题：
关键字
作者：
    
    

 

    

        
编号
        
标题
        
关键字
        
作者
        
日期
        
内容
    


            

            

            

            

            

            

        


        

首页 ";
echo "上一页";
echo "下一页";
echo " 尾页 ";
 
?>