33

How can I determine programatically whether the current user is anonymous or authenticated?

5 Answers 5

66

For the sake of more robust and descriptive code, you can make use of the handy User::isAnonymous() method, e.g.

if (\Drupal::currentUser()->isAnonymous()) {
  // Anonymous user...
}
3
  • 2
    Whenever possible, use methods like this: program to the interface not the implementation. Using an IDE w/ code completion is invaluable for Drupal 8 work.
    – mpdonadio
    Feb 2, 2015 at 15:39
  • 3
    For anyone else who comes across this, note that \Drupal::currentUser()->isAuthenticated() is the equivalent of D7 user_is_logged_in()
    – Jaypan
    Jan 16, 2017 at 8:13
  • I created a custom module and I can't get this function to work. Is there something additional I need to add in my module? Thank you in advance.
    – SuperTony
    May 30, 2019 at 23:04
6
  $current= \Drupal::currentUser();
  if (!$current->id()) {
    // is visitor
  }
  else {
    // is logged
  }
0
2

isAnonymous() holds the danger of not working when a site is saving data (for example in forms) in PrivateTempStore. Therefore, i prefer the following:

if (\Drupal::currentUser()->isAuthenticated()) {
  // This user is logged in.
} else {
  // This user is anonymous.
}
0

Methods that you can use in Drupal 8 to check:

Use the isAuthenticated() method on the user. For example, use the following code to determine the state of the current user:

$logged_in = \Drupal::currentUser()->isAuthenticated();

Use isAnonymous() to determine if the user is anonymous:

$anynomous_user = \Drupal::currentUser()->isAnonymous();
-4

U can use this code::

global $user;
if ($user->uid == 0) {
  //user is not logged in
}else{
  //user is logged in
}
3
  • 2
    Drupal code works for Drupal 7, but not in Drupal 8
    – Dev
    May 25, 2017 at 12:26
  • 2
    Yeah and use === for strict comparison and put space before and after your else for coding standards :/
    – klidifia
    Jul 9, 2019 at 4:45
  • This code could match with an user that is being created, because $user->uid is NULL before the first save(). The NULL response on the uid would match with the == 0.
    – Pauleau
    Dec 8, 2021 at 10:58

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.