original_string: protected function update_users_used() {
          global $DB;
  
          $this->userfullnames = array();
          $userids = array();
  
          // For each event cache full username.
          // Get list of userids which will be shown in log report.
          foreach ($this->rawdata as $event) {
              $logextra = $event->get_logextra();
              if (!empty($event->userid) && empty($userids[$event->userid])) {
                  $userids[$event->userid] = $event->userid;
              }
              if (!empty($logextra['realuserid']) && empty($userids[$logextra['realuserid']])) {
                  $userids[$logextra['realuserid']] = $logextra['realuserid'];
              }
              if (!empty($event->relateduserid) && empty($userids[$event->relateduserid])) {
                  $userids[$event->relateduserid] = $event->relateduserid;
              }
          }
          $this->rawdata->close();
  
          // Get user fullname and put that in return list.
          if (!empty($userids)) {
              list($usql, $uparams) = $DB->get_in_or_equal($userids);
              $users = $DB->get_records_sql("SELECT id," . get_all_user_name_fields(true) . " FROM {user} WHERE id " . $usql,
                      $uparams);
              foreach ($users as $userid => $user) {
                  $this->userfullnames[$userid] = fullname($user);
                  unset($userids[$userid]);
              }
  
              // We fill the array with false values for the users that don't exist anymore
              // in the database so we don't need to query the db again later.
              foreach ($userids as $userid) {
                  $this->userfullnames[$userid] = false;
              }
          }
      }
code: protected function update_users_used() {
          global $DB;
  
          $this->userfullnames = array();
          $userids = array();
  
          // For each event cache full username.
          // Get list of userids which will be shown in log report.
          foreach ($this->rawdata as $event) {
              $logextra = $event->get_logextra();
              if (!empty($event->userid) && empty($userids[$event->userid])) {
                  $userids[$event->userid] = $event->userid;
              }
              if (!empty($logextra['realuserid']) && empty($userids[$logextra['realuserid']])) {
                  $userids[$logextra['realuserid']] = $logextra['realuserid'];
              }
              if (!empty($event->relateduserid) && empty($userids[$event->relateduserid])) {
                  $userids[$event->relateduserid] = $event->relateduserid;
              }
          }
          $this->rawdata->close();
  
          // Get user fullname and put that in return list.
          if (!empty($userids)) {
              list($usql, $uparams) = $DB->get_in_or_equal($userids);
              $users = $DB->get_records_sql("SELECT id," . get_all_user_name_fields(true) . " FROM {user} WHERE id " . $usql,
                      $uparams);
              foreach ($users as $userid => $user) {
                  $this->userfullnames[$userid] = fullname($user);
                  unset($userids[$userid]);
              }
  
              // We fill the array with false values for the users that don't exist anymore
              // in the database so we don't need to query the db again later.
              foreach ($userids as $userid) {
                  $this->userfullnames[$userid] = false;
              }
          }
      }
code_tokens: protected function update_users_used ( ) { global $ DB ; $ this -> userfullnames = array ( ) ; $ userids = array ( ) ; // For each event cache full username. // Get list of userids which will be shown in log report. foreach ( $ this -> rawdata as $ event ) { $ logextra = $ event -> get_logextra ( ) ; if ( ! empty ( $ event -> userid ) && empty ( $ userids [ $ event -> userid ] ) ) { $ userids [ $ event -> userid ] = $ event -> userid ; } if ( ! empty ( $ logextra [ 'realuserid' ] ) && empty ( $ userids [ $ logextra [ 'realuserid' ] ] ) ) { $ userids [ $ logextra [ 'realuserid' ] ] = $ logextra [ 'realuserid' ] ; } if ( ! empty ( $ event -> relateduserid ) && empty ( $ userids [ $ event -> relateduserid ] ) ) { $ userids [ $ event -> relateduserid ] = $ event -> relateduserid ; } } $ this -> rawdata -> close ( ) ; // Get user fullname and put that in return list. if ( ! empty ( $ userids ) ) { list ( $ usql , $ uparams ) = $ DB -> get_in_or_equal ( $ userids ) ; $ users = $ DB -> get_records_sql ( "SELECT id," . get_all_user_name_fields ( true ) . " FROM {user} WHERE id " . $ usql , $ uparams ) ; foreach ( $ users as $ userid => $ user ) { $ this -> userfullnames [ $ userid ] = fullname ( $ user ) ; unset ( $ userids [ $ userid ] ) ; } // We fill the array with false values for the users that don't exist anymore // in the database so we don't need to query the db again later. foreach ( $ userids as $ userid ) { $ this -> userfullnames [ $ userid ] = false ; } } }
docstring: Helper function to create list of user fullnames shown in log report.
  
  This will update $this->userfullnames array with userfullname,
  which will be used to render logs in table.
  
  @since   Moodle 2.9
  @return  void
docstring_tokens: Helper function to create list of user fullnames shown in log report .