How can Composer be effectively used to access the Facebook SDK in PHP?

To access the Facebook SDK in PHP, Composer can be effectively used to manage the dependencies required for the SDK. By including the Facebook SDK package in the composer.json file and running `composer install`, Composer will download and install the necessary files for the Facebook SDK to be used in the PHP project.

// composer.json
{
    "require": {
        "facebook/graph-sdk": "^5.0"
    }
}