In this tutorial, you build a sample app in PHP that calls a REST API that doesn't require authentication.

• PHP ^7.4 or ^8.0
• Composer

Run the following commands in the directory where you want to create a new project.

composer init

In case you're adding a Kiota client to an existing project, the following configuration is required:

• composer.json > require > php set to "php": "^8.0 || ^7.4" or later.

Before you can compile and run the generated API client, you need to make sure the generated source files are part of a project with the required dependencies. Your project must have a reference to the abstraction package. Additionally, you must either use the Kiota default implementations or provide your own custom implementations of the following packages.

• HTTP (Kiota default Guzzle-based implementation)
• JSON serialization (Kiota default)
• Text serialization (Kiota default)

For this tutorial, use the default implementations.

Run the following commands to get the required dependencies.

composer require microsoft/kiota-abstractions
composer require microsoft/kiota-http-guzzle
composer require microsoft/kiota-serialization-json
composer require microsoft/kiota-serialization-text

Kiota generates API clients from OpenAPI documents. Create a file named posts-api.yml and add the following.

:::code language="yaml" source="~/code-snippets/get-started/quickstart/posts-api.yml":::

This file is a minimal OpenAPI description that describes how to call the /posts endpoint in the JSONPlaceholder REST API.

You can then use the Kiota command line tool to generate the API client classes.

kiota generate -l PHP -d ../posts-api.yml -c PostsApiClient -n KiotaPosts\Client -o ./client

Add the following to your composer.json to set your namespaces correctly:

"autoload": {
    "psr-4": {
        "KiotaPosts\\Client\\": "client/"
    }
}

To ensure the newly generated classes can be imported, update the autoload paths using:

composer dumpautoload

Create a file in the root of the project named main.php and add the following code.

:::code language="php" source="~/code-snippets/get-started/quickstart/php/main.php" id="ProgramSnippet":::

To start the application, run the following command in your project directory.

php main.php

• kiota-samples repository contains the code from this guide.
• Microsoft Graph sample using Microsoft identity platform authentication
• ToDoItem Sample API implements a sample OpenAPI in ASP.NET Core and sample clients in multiple languages.