how to check if login = admin or moderator?

It is possible to check whether the logged-in user has a certain role. For example, something like this if you have a role called 'moderator'

global $user;
if (is_array($user->roles) && in_array('moderator', $user->roles)) {... do something ...}

However, this is useless for showing the login screen only to 'moderators', because if they are not already logged-in they are not moderators, they are just visitors.

It is also possible to check so using the drupal built in user_access() function, for example the super administrator account doesn't have a role by default so you can check it using :

if(user_access('administer')) {... do something ...}

hope it might help somebody.

Note: I tried this with drupal version 5.x

Thanks to cog.rusty and mos3abof for such clear, concise info and code.

This thread will be useful to many.

// Load the currently logged in user.
global $user;
if (in_array('administrator', $user->roles)) {
// do fancy stuff
$form['field_end_date']['#disabled'] = FALSE;
}

Hi All,

Where I need to write this code for check user role.
Do i need to write in any custom module with hook_init()?
or any other place?
Please suggest !

I have 100 users registered in Mysite and they are from different countries. They have also posted their Content.

When they logged in their account, how do I show if they are Online/Offline to other users ?

Any help much appreciated.

thanks, this works out just perfect. there is a link to the login screen, I just don't want normal users to have a navigation menu available, only mods/admin

Just what I was looking for, thanks

This thread is very useful, so I thought it'd be worth coming back here to update for Drupal 10. Based on the addition made here: https://www.drupal.org/node/3002289 which introduces hasRole()

// If current user is an administrator, do something
if (\Drupal::currentUser()->hasRole('administrator')) {
  // Do something
}

For my uses, I needed to hide a button for all users who were NOT administrators. This is what worked for me:

if (!\Drupal::currentUser()->hasRole('administrator')) {
  $form['actions']['revert']['#access'] = FALSE;
}