SESSION是一个服务器全局变量，常用于用户登陆，购物车实例，用在一些安全要求比较高的应用中。 session 还有很多优点，比如控制容易，可以按照用户自定义存储等(存储于数据库),PHP.ini 的权限，默认 session 的存放路径是服务器的系统临时文件夹
/*
SESSION简单说明
SESSION是一个服务器全局变量，常用于用户登陆，购物车实例，用在一些安全要求比较高的应用中。
session 还有很多优点，比如控制容易，可以按照用户自定义存储等(存储于数据库教程),PHP.ini 的权限，默认 session 的存放路径是服务器的系统临时文件夹
Session 使用方法
如何创建 session? 非常简单，真的。启动 session 会话，并创建一个 $useradmin 变量
| 代码如下 | 复制代码 |
|
?> |
|
session实例应用的一个简单的实例
create table session_test(
admin(20) not null default '',
pwd(20) not null default ''
)type = mysima;
插入一条数据
insert into session_test values('admin','123456');
*/
//用户登陆
| 代码如下 | 复制代码 |
|
$db ='abc'; $sql = "Select * from session_test where admin= '$admin' and pwd='$pwd'"; if( mysql_num_rows( $result ) ) |
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//好上面的登陆实例完成了，现在我们来判断用户是否为登陆状态，如果是就进入相关页面
| 代码如下 | 复制代码 |
| if( isset( $_SESSION['admin'] ) && isset( $_SESSION['admin'] != '' ) ) { header('location:http://www.111cn.net'); //判断了session的admin是有值的所以进行跳转 } else { exit('未登陆'); } |
|
// 下面我们再退出登陆状态
| 代码如下 | 复制代码 |
| $_session["admin"] = ''; //或 session_unset(); //或 session_destroy(); |
|
//本站原创文章转载注明来自www.111cn.net
?>
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