Show information about the current user

1234
if(!$USER->login()){$USER->login("test", "user");} 
print_r($USER->details()); 
echo '<br/>'; 
print_r($USER->groups());
Array ( [ID_USER_SUB] => 3 [usr_gender] => [usr_first] => User [usr_last] => Active [usr_birth] => 0000-00-00 [nick] => test [usr_mail] => support@opus9.org [pass_key] => ee11cbb19052e40b07aac0ca060c23ee [pass_new] => [status] => 1 [admin] => -1 [usr_secure] => [reg_hash] => 9fdda797acbd6344188dc46ee4e3acca [reg_time] => 2016-03-10 15:31:02 [reg_ip] => )
Array ( [5] => Testuser )