yii中使用session和cookie
一,在Yii中使用session
1,CHttpSession
与原生态php5的session使用差别是,php5使用session_start();$_session['key'] = $value;
在yii中,session已经被封装。
To start the session, call open(); To complete and send out session data, call close(); To destroy the session, call destroy().
If autoStart is set true, the session will be started automatically when the application component is initialized by the application.
/***** 方式一、实例添加 *****/
$session=new CHttpSession;
$session->open();
$value1=$session['name1'];
/***** 方式二、直接调用应用添加 *****/
Yii::app()->session->add('name','foobar');
Yii::app()->session->add('name2','foobar');
Yii::app()->session->add('name3','foobar');
或者
$session = Yii::app()->session;
$session['key'] = 'value';
var_dump($session['key']);
遍历
foreach($session as $name=>$value)
一个实例,
$session = new CHttpSession;
$session->open();
$user_id = $this->user->id;
$sessionKey = $user_id.'_is_sending';
if(isset($session[$sessionKey])){
$first_submit_time = $session[$sessionKey];
$current_time = time();
if($current_time - $first_submit_time < 10){
$session[$sessionKey] = $current_time;
$this->response(array('status'=>1, 'msg'=>'不能在10秒钟内连续发送两次。'));
}else{
unset($session[$sessionKey]);//超过限制时间,释放session";
}
}
//第一次点击确认按钮时执行
if(!isset($session[$sessionKey])){
$session[$sessionKey] = time();
}
var_dump($sessionKey);
var_dump($session[$sessionKey]);
exit();
在index.php
在$app->run();前
$session = Yii::app()->session;
session_set_save_handler(
array($session,'openSession'),
array($session,'closeSession'),
array($session,'readSession'),
array($session,'writeSession'),
array($session,'destroySession'),
array($session,'gcSession')
);
2,CDbHttpSession
CDbHttpSession继承自 CHttpSession ,把session数据存储在数据库中(表名是YiiSession),
The table name can be changed by setting sessionTableName. If the table does not exist, it will be automatically created if autoCreateSessionTable is set true.
#The following is the table structure:
CREATE TABLE YiiSession
(
id CHAR(32) PRIMARY KEY,
expire INTEGER,
data TEXT
)
CDbHttpSession relies on PDO to access database.
By default, it will use an SQLite3 database named 'session-YiiVersion.db' under the application runtime directory. You can also specify connectionID so that it makes use of a DB application component to access database.
When using CDbHttpSession in a production server, we recommend you pre-create the session DB table and set autoCreateSessionTable to be false. This will greatly improve the performance. You may also create a DB index for the 'expire' column in the session table to further improve the performance.
CREATE TABLE `YiiSession` (
`id` char(32) NOT NULL,
`expire` int(11) default NULL,
`data` text,
PRIMARY KEY (`id`),
KEY `expire` (`expire`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
例,在../config/main.php中配置
'session'=>array(
'class' => 'CDbHttpSession',
'autoStart' => true,
'sessionTableName'=>'YiiSession',
'autoCreateSessionTable'=> false,
'connectionID'=>'db',
),
二,在Yii中使用cookie
Yii实现了一个cookie验证机制,可以防止cookie被修改。启用之后可以对cookie的值进行HMAC检查。
Cookie验证在默认情况下是禁用的。如果你要启用它,可以编辑应用配置 中的组件中的CHttpRequest部分。
一定要使用经过Yii验证过的cookie数据。使用Yii内置的cookies组件来进行cookie操作,不要使用$_COOKIES。
实例:
// 检索一个名为$name的cookie值
$cookie=Yii::app()->request->cookies[$name];
$value=$cookie->value;
......
// 设置一个cookie
$cookie=new CHttpCookie($name,$value);
Yii::app()->request->cookies[$name]=$cookie;
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由 davidzhang创作并维护的 Gowhich博客采用创作共用保留署名-非商业-禁止演绎4.0国际许可证。
本文首发于 博客( https://www.gowhich.com ),版权所有,侵权必究。
本文永久链接: https://www.gowhich.com/blog/360
版权声明
由 davidzhang创作并维护的 Gowhich博客采用创作共用保留署名-非商业-禁止演绎4.0国际许可证。
本文首发于 Gowhich博客( https://www.gowhich.com ),版权所有,侵权必究。
本文永久链接: https://www.gowhich.com/blog/360