<?php
 
  require_once 'pathTo/jsonRPCClient.php';
 
  define( 'LS_BASEURL', 'https://pathTo/limesurvey/');
  define( 'LS_USER', 'admin' );
  define( 'LS_PASSWORD', 'password' );
 
  $iSurveyID = $_GET["sid"];
  $token = $_GET["token"];
  $email = $_GET["email"];
  $firstName =  $_GET["firstname"];
  $lastName = $_GET["lastname"];
  $language = $_GET["lang"];
 
  // 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 );
 
  // Check if token already exists
  $tokenExists = false;
  $aConditions = array("completed"=>"N");
  $listParticipants = $myJSONRPCClient->list_participants($sSessionKey, $iSurveyID, 0, 100000, false, false, $aConditions);
  foreach ($listParticipants as $value) {
    if(is_array($value)) {
      if(array_key_exists('token', $value)) {
        if($value['token'] == $token) {
          $tokenExists = true;
        }
      }
    }
  }
 
  // Token does not exist so we'll create one
  if($tokenExists == false) {
 
    // Define the token params
    $tokenParams = array("email"=>$email,"lastname"=>$lastName,"firstname"=>$firstName,"token"=>$token,"language"=>$language,"emailstatus"=>"OK");
    $aParticipantData=array($tokenParams);
    $bCreateToken = false;
 
    // Create the token in survey 2
    $newToken = $myJSONRPCClient->add_participants( $sSessionKey, $iSurveyID, $aParticipantData, $bCreateToken);
 
    // If token successfully created, redirect to survey
    if(isset($newToken[0]['tid']) &amp;&amp; isset($newToken[0]['token'])) {
      echo('New token '.$newToken[0]['token'].', ID '.$newToken[0]['tid']);
    }
    // Otherwise, display errors
    else if (isset($newToken['status'])) {
      echo $newToken['status'];
    }
    else {
      echo '<br />';
      echo 'Error: '.$newToken[0]['errors']['token'][0];
    }
  }
  // Token already exists
  else {
    echo 'The token already exists!';
  }
 
  // Release the session key
  $myJSONRPCClient->release_session_key( $sSessionKey );
?>