php教程 上一篇與下一篇文章代碼
基本知識:
就是對id對進行order by id desc 或 order by id asc進行排序,然後再判斷比當前id> or小於當前文章id的
實例的sql語句如下:
select * from news where id<$id order by id desc limit 0,1
select * from news where id>$id order by id desc limit 0,1
--
-- 表的結構 `string_find`
--
CREATE TABLE IF NOT EXISTS `string_find` (
`id` int(4) NOT NULL auto_increment,
`charList` varchar(100) default NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=7 ;
--
-- 導出表中的數據 `string_find`
--
INSERT INTO `string_find` (`id`, `charList`) VALUES
(1, '鄧先驅者'),
(2, '鄧先驅者'),
(5, 'fdafdsaf'),
(6, 'www.bKjia.c0m');
好了萬事俱備了,下面來看一下操作方法
*/
mysql教程_pconnect('localhost','root','root') or die(mysql_error());
mysql_select_db('cc');
mysql_query("set names 'gbk'");
$cid =5;//是你當前文章的編號
$sql ="select * from string_find where id>$cid order by id desc limit 0,1"; //上一篇文章
$sql1 ="select * from string_find where id<$cid order by id asc limit 0,1";//下一篇文章
$result = mysql_query( $sql );
if( mysql_num_rows( $result ) )
{
$rs = mysql_fetch_array( $result );
echo "上一篇".$rs[0];
}
else
{
echo "沒有了";
}
$result1 = mysql_query( $sql1 );
if( mysql_num_rows( $result1 ) )
{
$rs1 = mysql_fetch_array( $result1 );
echo "下一篇".$rs1[0];
}
else
{
echo "沒有了";
}
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