Config Cross-subdomain authentication

common/config/main.php

@@ -14,6 +14,7 @@ return [
         ],
         'session' => [
             'class' => 'yii\web\Session',
+            'name' => 'PHPLABOITEAPAINSESSID',
             'cookieParams' => [
                 'domain' => '.'.Yii::getAlias('@domainName'),
                 'httpOnly' => true,