How to tell if the logged in user is in a group?

A function that you can put into your theme’s function.php:

function uam_user_in_group($groupName='', $userId='') {
	if (empty($userId)) {
		$userId = get_current_user_id();
	}

    global $userAccessManager;
    if (isset($userAccessManager)) {
        $uamAccessHandler 	= $userAccessManager->getAccessHandler();
        $userGroupsForUser 	= $uamAccessHandler->getUserGroupsForObject('_user_', $userId);
        foreach($userGroupsForUser as $element) {
            if ($element->getName() == $groupName) {
                return true;
            }
        }
    } else {
        return false;
    }
}

And then just call it like this with group name and an optional user id as second parameter:

if (wsm_uam_user_in_group('MyGroupName')) {
        echo 'User is in group'!;
} else {
        echo 'User is not in group'!;
}

@cleuenberg Nice one. I added your snipped to the wiki: https://github.com/GM-Alex/user-access-manager/wiki/Code-Snippets

@gm_alex Thank you! I made a little mistake calling the function – I put some dashes in the example output but outside of the quotes ?? So it should rather be:

if (wsm_uam_user_in_group('MyGroupName')) {
        echo 'User is in group!';
} else {
        echo 'User is not in group!';
}