yii2 consigue cookie
// get the cookie collection (yii\web\CookieCollection) from the "request" component
$cookies = Yii::$app->request->cookies;
// get the "language" cookie value. If the cookie does not exist, return "en" as the default value.
$language = $cookies->getValue('language', 'en');
// an alternative way of getting the "language" cookie value
if (($cookie = $cookies->get('language')) !== null) {
$language = $cookie->value;
}
// you may also use $cookies like an array
if (isset($cookies['language'])) {
$language = $cookies['language']->value;
}
// check if there is a "language" cookie
if ($cookies->has('language')) ...
if (isset($cookies['language'])) ...
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