# Laravel experiments installation - Docs

1.  1

    ## Install the package

    Required

    Install the PostHog PHP library using Composer:

    Terminal

    PostHog AI

    ```bash
    composer require posthog/posthog-php
    ```

2.  2

    ## Configure PostHog

    Required

    Initialize PostHog in the `boot` method of `app/Providers/AppServiceProvider.php`:

    app/Providers/AppServiceProvider.php

    PostHog AI

    ```php
    <?php
    namespace App\Providers;
    use Illuminate\Support\ServiceProvider;
    use PostHog\PostHog;
    class AppServiceProvider extends ServiceProvider
    {
        public function boot(): void
        {
            PostHog::init(
                '<ph_project_token>',
                [
                    'host' => 'https://us.i.posthog.com'
                ]
            );
        }
    }
    ```

3.  3

    ## Implement your experiment

    Required

    Experiments run on top of our feature flags. You can define which version of your code runs based on the return value of the feature flag:

    **Note:** Server-side experiment metrics require you to manually send the feature flag information. See [this tutorial](/docs/experiments/adding-experiment-code.md) for more information.

    ```php
    if (PostHog::getFeatureFlag('your-experiment-feature-flag', 'user distinct id') == 'test') {
        // Do something differently for this user
    } else {
        // It's a good idea to let control variant always be the default behaviour,
        // so if something goes wrong with flag evaluation, you don't break your app.
    }
    ```

4.  4

    ## Run your experiment

    Required

    Once you've implemented the feature flag in your code, you'll enable it for a target audience by creating a new experiment in the PostHog dashboard.

5.  5

    ## Next steps

    Recommended

    Now that you're running experiments, continue with the resources below to learn what else Experiments enables within the PostHog platform.

    | Resource | Description |
    | --- | --- |
    | [Creating an experiment](/docs/experiments/creating-an-experiment.md) | How to create an experiment in PostHog |
    | [Adding experiment code](/docs/experiments/adding-experiment-code.md) | How to implement experiments for all platforms |
    | [Statistical significance](/docs/experiments/statistics-bayesian.md) | Understanding when results are meaningful |
    | [Experiment insights](/docs/experiments/analyzing-results.md) | How to analyze your experiment data |
    | [More tutorials](/docs/experiments/tutorials.md) | Other real-world examples and use cases |

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