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php实现只保留mysql中最新1000条记录

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Release: 2016-06-06 20:03:11
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这篇文章主要介绍了php实现只保留mysql中最新1000条记录的方法和相关示例及数据库结构,十分的全面,有需要的小伙伴可以参考下。

$limit){ $query="select `id` from `news` order by `id` desc limit ".$limit; $result=mysql_query($query); mysql_data_seek($result,$limit-1); $data=mysql_fetch_array($result); $query="delete from `news` where `id`

test.sql

-- phpMyAdmin SQL Dump
-- version 3.1.5-rc1
--
--
-- 主机: localhost
-- 生成日期: 2010 年 08 月 19 日 05:47
-- 服务器版本: 5.0.18
-- PHP 版本: 5.2.8

SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";


/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;

--
-- 数据库: `test`
--

-- --------------------------------------------------------

--
-- 表的结构 `news`
--

CREATE TABLE IF NOT EXISTS `news` ( `id` int(11) unsigned NOT NULL auto_increment, `title` varchar(256) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=gb2312;

以上所述就是本文的全部内容了,希望大家能够喜欢。

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