<?php
//设置方法
$cookie = new Cookie([
  \'name\' => \'cookie_monster\',
  \'value\' => \'Me want cookie!\',
  \'expire\' => time() + 86400 * 365,
]);
\\Yii::$app->getResponse()->getCookies()->add($cookie);
//读取方法
$value = \\Yii::$app->getRequest()->getCookies()->getValue(\'my_cookie\');
//给cookie加域名
$cookie = new Cookie([
  \'name\' => \'cookie_monster\',
  \'value\' => \'Me want cookie everywhere!\',
  \'expire\' => time() + 86400 * 365,
  \'domain\' => \'.example.com\' // <<<=== HERE
]);
\\Yii::$app->getResponse()->getCookies()->add($cookie);
//设置登录cookie
$config = [
  // ...
  \'components\' => [
    // ...
    \'user\' => [
      \'class\' => \'yii\\web\\User\',
      \'identityClass\' => \'app\\models\\User\',
      \'enableAutoLogin\' => true,
      \'loginUrl\' => \'/user/login\',
      \'identityCookie\' => [ // <---- here!
        \'name\' => \'_identity\',
        \'httpOnly\' => true,
        \'domain\' => \'.example.com\',
      ],
    ],
    \'request\' => [
      \'cookieValidationKey\' => \'your_validation_key\'
    ],
    \'session\' => [
      \'cookieParams\' => [
        \'domain\' => \'.example.com\',
        \'httpOnly\' => true,
      ],
    ],
  ],
];
//只给批定目录配置cookie
$config = [
  // ...
  \'components\' => [
    // ...
    \'session\' => [
      \'name\' => \'admin_session\',
      \'cookieParams\' => [
        \'httpOnly\' => true,
        \'path\' => \'/admin\',
      ],
    ],
  ],
];
?>