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php 上一篇与下一篇文章代码

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Release: 2016-06-13 09:58:11
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php教程 上一篇与下一篇文章代码
基本知识:

就是对id对进行order by id desc 或  order by id asc进行排序,然后再判断比当前id> or小于当前文章id的
实例的sql语句如下:

select * from news where id select * from news where id>$id order by id desc limit 0,1

--
-- 表的结构 `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 ;

--
-- 导出表中的数据 `string_find`
--

INSERT INTO `string_find` (`id`, `charList`) VALUES
(1, '邓先驱者'),
(2, '邓先驱者'),
(5, 'fdafdsaf'),
(6, 'www.bKjia.c0m');

好了万事俱备了,下面来看一下操作方法
*/


 mysql教程_pconnect('localhost','root','root') or die(mysql_error());
 mysql_select_db('cc');
 mysql_query("set names 'gbk'"); 
 $cid =5;//是你当前文章的编号 
 $sql ="select * from string_find where id>$cid order by id desc limit 0,1"; //上一篇文章
 $sql1 ="select * from string_find where id  
 $result = mysql_query( $sql );
 if( mysql_num_rows( $result ) )
 {
  $rs = mysql_fetch_array( $result );
  echo "上一篇".$rs[0];
 }
 else
 {
  echo "没有了";
 }
 
 $result1 = mysql_query( $sql1 );
 if( mysql_num_rows( $result1 ) )
 {
  $rs1 = mysql_fetch_array( $result1 );
  echo "下一篇".$rs1[0];
 }
 else
 {
  echo "没有了";
 }

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