Notice (8): file_put_contents(): Write of 270 bytes failed with errno=28 No space left on device [CORE/src/Log/Engine/FileLog.php, line 140]

Notice: file_put_contents() [function.file-put-contents]: Write of 1108 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Notice (8): SplFileObject::fwrite() [<a href='https://secure.php.net/splfileobject.fwrite'>splfileobject.fwrite</a>]: Write of 5131 bytes failed with errno=28 No space left on device [CORE/src/Cache/Engine/FileEngine.php, line 141]

Notice: file_put_contents() [function.file-put-contents]: Write of 3152 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Notice (8): SplFileObject::fwrite() [<a href='https://secure.php.net/splfileobject.fwrite'>splfileobject.fwrite</a>]: Write of 284 bytes failed with errno=28 No space left on device [CORE/src/Cache/Engine/FileEngine.php, line 141]

Notice: file_put_contents() [function.file-put-contents]: Write of 2559 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Notice (8): SplFileObject::fwrite() [<a href='https://secure.php.net/splfileobject.fwrite'>splfileobject.fwrite</a>]: Write of 5437 bytes failed with errno=28 No space left on device [CORE/src/Cache/Engine/FileEngine.php, line 141]

Notice: file_put_contents() [function.file-put-contents]: Write of 3152 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Notice (8): unserialize() [<a href='https://secure.php.net/function.unserialize'>function.unserialize</a>]: Error at offset 4079 of 4085 bytes [APP/Controller/NewsController.php, line 5571]

Notice: file_put_contents() [function.file-put-contents]: Write of 2758 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Notice (8): SplFileObject::fwrite() [<a href='https://secure.php.net/splfileobject.fwrite'>splfileobject.fwrite</a>]: Write of 822 bytes failed with errno=28 No space left on device [CORE/src/Cache/Engine/FileEngine.php, line 141]

Notice: file_put_contents() [function.file-put-contents]: Write of 3151 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (2): Undefined array key "nsort" [APP/Controller/NewsController.php, line 3613]

Notice: file_put_contents() [function.file-put-contents]: Write of 2074 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (2): Trying to access array offset on value of type null [APP/Controller/NewsController.php, line 3613]

Notice: file_put_contents() [function.file-put-contents]: Write of 2098 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (2): Undefined array key "nsort" [APP/Controller/NewsController.php, line 3613]

Notice: file_put_contents() [function.file-put-contents]: Write of 2074 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (2): Trying to access array offset on value of type null [APP/Controller/NewsController.php, line 3613]

Notice: file_put_contents() [function.file-put-contents]: Write of 2098 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Notice (8): SplFileObject::fwrite() [<a href='https://secure.php.net/splfileobject.fwrite'>splfileobject.fwrite</a>]: Write of 122 bytes failed with errno=28 No space left on device [CORE/src/Cache/Engine/FileEngine.php, line 141]

Notice: file_put_contents() [function.file-put-contents]: Write of 2791 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (512): long cache was unable to write '21c72e7e4425315a89f6fbf9a9abb764' to Cake\Cache\Engine\FileEngine cache [CORE/src/Cache/Cache.php, line 275]

Notice: file_put_contents() [function.file-put-contents]: Write of 2586 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Notice (8): SplFileObject::fwrite() [<a href='https://secure.php.net/splfileobject.fwrite'>splfileobject.fwrite</a>]: Write of 108 bytes failed with errno=28 No space left on device [CORE/src/Cache/Engine/FileEngine.php, line 141]

Notice: file_put_contents() [function.file-put-contents]: Write of 2791 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (512): long cache was unable to write '7a581202e70ad0fd445bc1cb35f8d559' to Cake\Cache\Engine\FileEngine cache [CORE/src/Cache/Cache.php, line 275]

Notice: file_put_contents() [function.file-put-contents]: Write of 2586 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
PHP用mysql数据库存储session的方法 - 站长搜索
娱乐休闲

娱乐休闲

工商与经济

电脑与网络

公司与企业

教育与培训

文学

艺术

艺术

体育与健身

新闻与媒体

卫生与健康

科学/文化

生活与服务

聊天/BBS

聊天/BBS

论坛/聊天室

古典文学

体育健身

杀毒/安全/插件清理

艺术教育/院校

心理学

心理学

新闻与媒体

传统医学介绍

旅游线路报价

艺术家

古董与收藏品

首页 > 资讯列表 > 编程/数据库 >>

PHP用mysql数据库存储session的方法

Warning (2): Undefined array key "nsort" [ROOT/plugins/Kuhuang/templates/Websites/view.php, line 430]
Notice: file_put_contents() [function.file-put-contents]: Write of 2422 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (2): Trying to access array offset on value of type null [ROOT/plugins/Kuhuang/templates/Websites/view.php, line 430]

Notice: file_put_contents() [function.file-put-contents]: Write of 2446 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
">
Warning (2): Undefined array key "nsort" [ROOT/plugins/Kuhuang/templates/Websites/view.php, line 430]

Notice: file_put_contents() [function.file-put-contents]: Write of 2422 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
Warning (2): Trying to access array offset on value of type null [ROOT/plugins/Kuhuang/templates/Websites/view.php, line 430]

Notice: file_put_contents() [function.file-put-contents]: Write of 2446 bytes failed with errno=28 No space left on device in /www/wwwroot/www.adminso.com/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 140
 2014-12-09 00:09:07 转载来源: 网络整理/侵权必删

本文为大家讲解的是php+mysql在开发项目时如何用数据库来管理存储session会话的示例教材，感兴趣的同学参考下。 大部分使用php的人一旦应用到session都会使用cookie

本文为大家讲解的是php+mysql在开发项目时如何用数据库来管理存储session会话的示例教材，感兴趣的同学参考下。

大部分使用php的人一旦应用到session都会使用cookie。 cookie虽好可是它也会给我们带来一些隐患的。
隐患一：如果客户端机器的cookie一旦因病毒而失效了，那么session也就相当于没有了。
隐患二：session在php中默认的是以文件的形式保存在一个临时文件夹里面的，对于一个小型系统来说，这样做完全可以，
可是对于一个大型而又被经常访问的系统来说，就不是很好的办法了。假设这个网站一天有1000个人访问。一个月以后session的临时文件夹就会有30000个临时文件。想象一下计算机要从30000里面找一条session_sid是一个多么漫长的事情呀！
因此为了提高效率。使用用数据库保存session。

具体方法如下：


1.更改php.ini文件。
由于php默认保存session的方式是files所以我们要改变它。即：找到“session.save_handler = files”将“files”改为“User”。
把session的模式改成用户自定义的。
2.建立数据库：
CREATE TABLE `db_session` (
`sesskey` char(32) NOT NULL,
`expiry` int(11) unsigned NOT NULL,
`value` text NOT NULL,
PRIMARY KEY (`sesskey`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
[/code]
数据库表明：db_session
列名：sesskey，expiry，value　其中：sesskey为主键。
Value里面存放着session里面的值。
3.建立session_mysql.php文件。这个文件是用来构造保存session的方法的。修改一下参数直接使用就可以了。
session_mysql.php

<?php
$gb_DBname="db_myBBS";//数据库名称
$gb_DBuser="root";//数据库用户名称
$gb_DBpass="12345";//数据库密码
$gb_DBHOSTname="localhost";//主机的名称或是IP地址
$SESS_DBH="";
$SESS_LIFE=get_cfg_var("session.gc_maxlifetime");//得到session的最大有效期。
function sess_open($save_path,$session_name){
global $gb_DBHOSTname,$gb_DBname,$gb_DBuser,$gb_DBpass,$SESS_DBH;
if(!$SESS_DBH=mysql_pconnect($gb_DBHOSTname,$gb_DBuser,$gb_DBpass)){
echo "<li>MySql Error:".mysql_error()."<li>";
die();
}
if(!mysql_select_db($gb_DBname,$SESS_DBH)){
echo "<li>MySql Error:".mysql_error()."<li>";
die();
}
return true;
}
function sess_close(){
return true;
}
function sess_read($key){
global $SESS_DBH,$SESS_LIFE;
$qry="select value from db_session where sesskey = '$key' and expiry > ".time();
$qid=mysql_query($qry,$SESS_DBH);
if(list($value)=mysql_fetch_row($qid)){
return $value;
}
return false;
}
function sess_write($key,$val){
global $SESS_DBH,$SESS_LIFE;
$expiry=time()+$SESS_LIFE;
$value=$val;
$qry="insert into db_session values('$key',$expiry,'$value')";
$qid=mysql_query($qry,$SESS_DBH);
if(!$qid){
$qry="update db_session set expiry=$expiry, value='$value' where sesskey='$key' and expiry >".time();
$qid=mysql_query($qry,$SESS_DBH);
}
return $qid;
}
function sess_destroy($key){
global $SESS_DBH;
$qry="delete from db_session where sesskey = '$key'";
$qid=mysql_query($qry,$SESS_DBH);
return $qid;
}
function sess_gc($maxlifetime){
global $SESS_DBH;
$qry="delete from db_session where expiry < ".time();
$qid=mysql_query($qry,$SESS_DBH);
return mysql_affected_rows($SESS_DBH);
}
session_module_name();
session_set_save_handler("sess_open","sess_close","sess_read","sess_write","sess_destroy","sess_gc");
?>


4.建立测试文件。
在使用之前必须引用刚刚建立的session_mysql.php文件。
session_test.php

<?php
include ("session_mysql.php");
session_start();
$_SESSION['abc']= "A: I will be back!";
$_SESSION['meto']= "B: Me too ";
$_SESSION['name']= "louis ";
echo "<a href="get_session_test.php">click me</a>";
?>


get_session_test.php

 


<?php
include ("session_mysql.php");
session_start();
echo $_SESSION['abc'];
echo "<br>";
echo $_SESSION['meto'];
echo "<br>";
echo $_SESSION['name'];
$_SESSION['wq']="12e";
echo "<br><a href="get_session_test2.php">click again</a>";
?>


get_session_test2.php

 


<?php
include ("session_mysql.php");
session_start();
echo $_SESSION['abc'];
echo "<br>";
echo $_SESSION['meto'];
echo "<br>";
echo $_SESSION['name'];
echo "<br>";
echo $_SESSION['wq'];
//session_destroy();//用来销毁所有session的函数。
?>

 


标签: PHP mysql 数据库 存储 session 方法


声明：本文内容来源自网络，文字、图片等素材版权属于原作者，平台转载素材出于传递更多信息，文章内容仅供参考与学习，切勿作为商业目的使用。如果侵害了您的合法权益，请您及时与我们联系，我们会在第一时间进行处理！我们尊重版权，也致力于保护版权，站搜网感谢您的分享！

上一篇: ＂我们不会送你ipad＂ 微信官网题字遐想
上一篇: 苏宁打脸淘宝？“马云”亮了

猜您喜欢

热门文章

热点

标签列表

站长搜索

http://www.adminso.com

Copyright @ 2007~2025 All Rights Reserved.

Powered By 站长搜索

会员注册

会员登陆

在线投稿

提交网站

站长资讯

网站列表

域名库

关键词库

帮助中心

免责声明

隐私保护

域名查询

广告赞助

网站地图

打开手机扫描上面的二维码打开手机版


使用手机软件扫描微信二维码

关注我们可获取更多热点资讯

站长搜索目录系统技术支持