original_string: protected function get_user_fullname($userid) {
          global $DB;
  
          if (empty($userid)) {
              return false;
          }
  
          if (!empty($this->userfullnames[$userid])) {
              return $this->userfullnames[$userid];
          }
  
          // We already looked for the user and it does not exist.
          if ($this->userfullnames[$userid] === false) {
              return false;
          }
  
          // If we reach that point new users logs have been generated since the last users db query.
          list($usql, $uparams) = $DB->get_in_or_equal($userid);
          $sql = "SELECT id," . get_all_user_name_fields(true) . " FROM {user} WHERE id " . $usql;
          if (!$user = $DB->get_records_sql($sql, $uparams)) {
              return false;
          }
  
          $this->userfullnames[$userid] = fullname($user);
          return $this->userfullnames[$userid];
      }
code: protected function get_user_fullname($userid) {
          global $DB;
  
          if (empty($userid)) {
              return false;
          }
  
          if (!empty($this->userfullnames[$userid])) {
              return $this->userfullnames[$userid];
          }
  
          // We already looked for the user and it does not exist.
          if ($this->userfullnames[$userid] === false) {
              return false;
          }
  
          // If we reach that point new users logs have been generated since the last users db query.
          list($usql, $uparams) = $DB->get_in_or_equal($userid);
          $sql = "SELECT id," . get_all_user_name_fields(true) . " FROM {user} WHERE id " . $usql;
          if (!$user = $DB->get_records_sql($sql, $uparams)) {
              return false;
          }
  
          $this->userfullnames[$userid] = fullname($user);
          return $this->userfullnames[$userid];
      }
code_tokens: protected function get_user_fullname ( $ userid ) { global $ DB ; if ( empty ( $ userid ) ) { return false ; } if ( ! empty ( $ this -> userfullnames [ $ userid ] ) ) { return $ this -> userfullnames [ $ userid ] ; } // We already looked for the user and it does not exist. if ( $ this -> userfullnames [ $ userid ] === false ) { return false ; } // If we reach that point new users logs have been generated since the last users db query. list ( $ usql , $ uparams ) = $ DB -> get_in_or_equal ( $ userid ) ; $ sql = "SELECT id," . get_all_user_name_fields ( true ) . " FROM {user} WHERE id " . $ usql ; if ( ! $ user = $ DB -> get_records_sql ( $ sql , $ uparams ) ) { return false ; } $ this -> userfullnames [ $ userid ] = fullname ( $ user ) ; return $ this -> userfullnames [ $ userid ] ; }
docstring: Gets the user full name.
  
  This function is useful because, in the unlikely case that the user is
  not already loaded in $this->userfullnames it will fetch it from db.
  
  @since Moodle 2.9
  @param int $userid
  @return string|false
docstring_tokens: Gets the user full name .