VWO server side sdk


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This open source library provides you server-side testing capabilities.


PHP >= 5.6


Install the latest version with

composer require vwo/vwo-php-sdk

Basic Usage

Use the below code for inital setup.

require_once('userStorage.php'); // Optional :if you are using UserStorage service feature
require_once('customLogger.php');// Optional :if you are using custom logging feature

use vwo\VWO;

$accountId = REPLACE_WITH_VWO_ACCOUNT_ID; // eg: 123456
$sdkKey = 'REPLACE_WITH_TOKEN'; // eg: can be found in VWO app - FullStack project
$userId = 'USER_ID';

// to fetch the settings i.e campaigns, variations and goals
$settingsFile = VWO::getSettingsFile($accountId, $sdkKey);

$sdkConfig = [
  'settingsFile' => $settingsFile,
  'isDevelopmentMode' => 0,  // optional: 1 to enable the dev mode
  'logging' => new CustomLogger(), // optional
  'userStorageService' => new userStorageService() // optional

$vwoClient = new VWO($sdkConfig);

// to get the variation name along with add a visitor hit to vwo app stats
$variation = $vwoClient->activate($campaignKey, $userId, $options);
// Or, to get the variation name
$variation = $vwoClient->getVariationName($campaignKey, $userId, $options);

// add code here to use variation

*send the track api hit to the vwo app stats to increase conversions
* $revenue is optional send in case if there is any revenue inside $options

$vwoClient->track($campaignKey, $userId, $goalIdentifier, $options);

Code for implementing User Storage Service

use vwo\Utils\UserStorageInterface;
Class UserStorage implements UserStorageInterface{
    * @param $userId
    * @param $campaignKey
    * @return array
  public function get($userId, $campaignKey) {
    // search in DB/Storage system
    $variation = $db->fetch($userId, $campaignKey); // replace with your implementation

      'userId' => $userId,
      'campaignKey' => $campaignKey,
      'variationName' => $variation

    * @param $campaignUserMapping
    * @return bool - could be changed
  public function set($campaignUserMapping) {
    // S...code to store in DB/storage system
    return True;

Code for implementing Custom Logger

use vwo\Logger\LoggerInterface;

 * Class CustomLogger
Class CustomLogger implements LoggerInterface{
    * @param $message
    * @param $level
    * @return
  public function log($message, $level){
    // use $level and log $message to either print or store them for later use



Refer Official VWO Documentation

Third-party Resources and Credits

Refer third-party-attributions.txt



Development and Test Cases

  1. Set development environment
composer run-script start
  1. Run test cases
composer run-script test
  1. Run linter
composer run-script test
  1. Run code beautifier
composer run-script phpcbf


Apache License, Version 2.0

Copyright 2019-2022 Wingify Software Pvt. Ltd.