Yii session 和 cookie

session

$session = Yii::$app->session;

$session->isActive //检查session 是否开启

$session->open(); //开启session

$session->close(); //关闭session

$session->destroy(); //销毁session

$session->get('username');

$session->set('username','lisi');

$session['username'] = 'lisi';

$session->remove('username'); //删除session

$session->has('username'); //检查session变量是否已存在

foreach($session as $key=>$val)....

//session为数组

$session['captcha'] = [

'username'=>'lisi',

'pwd'=>123456,

];

echo $session['captcha']['username'];

//获取session

$captcha = $session['captcha'];

$captcha['username'] = 'lisi';

$captcha['pwd']= 123456;

// 使用ArrayObject 数组对象代替数组

$session['captcha'] = new \ArrayObject;

...

$session['captcha']['username'] = 'lisi';

$session['captcha']['pwd'] = 123456;

$session['captcha.username'] = 'lisi';

$session['captcha.pwd'] = 123456;

如何在应用配置中配置yii\web\DbSession 将数据表作为session存储介质。

return [

'components' => [

'session' => [

'class' => 'yii\web\DbSession',

// 'db' => 'mydb', // 数据库连接的应用组件ID，默认为'db'.

// 'sessionTable' => 'my_session', // session 数据表名，默认为'session'.

],

],

];

也需要创建如下数据库表来存储session数据：

CREATE TABLE session( id CHAR(40) NOT NULL PRIMARY KEY, expire INTEGER, data BLOB)

cookie:

读取cookie

// 从 "request"组件中获取cookie集合(yii\web\CookieCollection)

$cookies = Yii::$app->request->cookies;

$language = $cookies->getValue('language', 'en'); //获取cookie值，如果没有返回默认值 en

if (($cookie = $cookies->get('language')) !== null) {

$language = $cookie->value;

}

// 可将 $cookies当作数组使用

if (isset($cookies['language'])) {

$language = $cookies['language']->value;

}

// 判断是否存在名为"language" 的 cookie

if ($cookies->has('language')) ...

if (isset($cookies['language'])) ...

//发送cookie

// 从"response"组件中获取cookie 集合(yii\web\CookieCollection)

$cookies = Yii::$app->response->cookies;// 在要发送的响应中添加一个新的cookie

$cookies->add(new \yii\web\Cookie([ 'name' => 'language', 'value' => 'zh-CN',]));// 删除一个cookie

$cookies->remove('language');

// 等同于以下删除代码

unset($cookies['language']);