# Installation This page contains information about installing the Google APIs Client Library for PHP. ## Requirements * PHP version 5.4 or greater. ## Obtaining the client library There are two options for obtaining the files for the client library. ### Using Composer You can install the library by adding it as a dependency to your composer.json. ```json "require": { "google/apiclient": "^2.0" } ``` ### Downloading from GitHub Follow [the instructions in the README](https://github.com/google/google-api-php-client#download-the-release) to download the package locally. ### What to do with the files After obtaining the files, include the autloader. If you used Composer, your require statement will look like this: ```php require_once '/path/to/your-project/vendor/autoload.php'; ``` If you downloaded the package separately, your require statement will look like this: ```php require_once '/path/to/google-api-php-client/vendor/autoload.php'; ```