array $aAttributeFields  An array of integer describing any additional attribute fields

<?php
 
  define( 'LS_BASEURL', 'https://path/to/limesurvey/');
  define( 'LS_USER', 'admin' );
  define( 'LS_PASSWORD', 'password' );
 
  require_once '../../../../../application/libraries/jsonRPCClient.php';
 
  $iSurveyID = 123456;
 
 
  // Instantiate a new RPC client
  $myJSONRPCClient = new jsonRPCClient( LS_BASEURL.'/index.php/admin/remotecontrol' );
 
  // Get a session key
  $sSessionKey= $myJSONRPCClient->get_session_key( LS_USER, LS_PASSWORD );
 
  // Define attributes
  $aAttributeFields = array(1, 2, 3);
 
  // Activate the tokens
  $tokenActivation = $myJSONRPCClient->activate_tokens($sSessionKey, $iSurveyID, $aAttributeFields);
 
  // The returned result
  if($tokenActivation['status'] == 'OK') {
    echo 'Tokens created for survey '.$iSurveyID.'.';
  }
  else {
    echo 'Tokens NOT created for survey '.$iSurveyID.': '.$tokenActivation['status'];
  }
 
  // Release the session key
  $myJSONRPCClient->release_session_key( $sSessionKey );
?>