// Setup a new Token instance
$token = new Abby\Token();

// If we can't find an existing token cookie, generate one and set tracking cookie
if (!$token->getValue()) {
    $token->generate()->setCookie();
}

// Setup a User instance
$user = new Abby\User();

// Associate the token with our user
$user->setToken($token);

// List of experiments associated with a tracking token
$data = [
    [
        'id' => 1,
        'group' => 1,
        'viewed' => true,
        'converted' => false
    ]
];

// Loop through users existing experiments and add them to our user instance
foreach ($data as $item) {
    // Setup experiment instance based on an existing experiment
    $experiment = new Abby\Experiment([
        'id' => $item['id']
    ]);

    // Setup a group instance based on stored data
    $group = new Abby\Group([
        'type' => $item['group']
    ]);

    // Add the experiment (including their group, and whether they have viewed and converted)
    $user->addExperiment($experiment, $group, $item['viewed'], $item['converted']);
}

// Experiment data
$data = [
    'id' => 2
];

// Make sure the experiment isn't already in the users list
if (!$user->hasExperiment($data['id'])) {
    // Setup a new experiment instance
    $experiment = new Abby\Experiment([
        'id' => $data['id']
    ]);

    // Assign the user to either control or variation in the experiment
    $group = $user->assignGroup($experiment);

    // Add the experiment (including assigned group) to our user instance
    $user->addExperiment($experiment, $group);
}

// Getting updated user experiment list
$user->getExperiments();

// Store updated experiment list for our user

// Experiment data
$data = [
    'id' => 1
];

// Record a view for the experiment in question
$user->setViewed($data['id']);

// If the user is part of the variation group
if ($user->inVariation($data['id'])) {
    // Apply a custom class to an element, load a script, etc.
}

// Experiment data
$data = [
    'id' => 1
];

// On a custom goal, check if user has viewed the experiment and define a conversion
if ($user->hasViewed($data['id'])) {
    $user->setConverted($data['id']);
}

// Getting updated user experiment data
$user->getExperiments();

// Store updated data for our user

// Setup experiment instance with stored results
$experiment = new Abby\Experiment([
    'groups' => [
        [
            'name' => 'Control',
            'views' => 3000,
            'conversions' => 300
        ],
        [
            'name' => 'Variation',
            'views' => 3000,
            'conversions' => 364
        ]
    ]
]);

// Retrieve the results
$result = $experiment->getResult();

// Get the winner
$winner = $result->getWinner();

/**
 * Get whether we can be confident of the result (even if we haven't
 * reached the minimum number of views for each variant)
 */

$confident = $result->isConfident();

/**
 * Get the minimum sample size (number of views) required for each group to
 * reach statistical significance, given the control groups current conversion
 * rate (based on the configured minimumDetectableEffect)
 */

$minimum = $result->getMinimumSampleSize();

/**
 * Get whether the results are statistically significant
 */

$significant = $result->isSignificant();

/**
 * Get complete experiment result
 */

$summary = $result->getAll();