For more details about API v3, please visit our help section at https://sendloop.com/help/api-001/getting-started
Simply add the package to your composer.json file and run composer update.
"sendloop/sendloop": "dev-master"
Or go to your project directory where the composer.json file is located and type:
composer require "sendloop/sendloop" $sendloop = new Sendloop\SendloopAPI3('YOUR_API3_KEY', 'SENDLOOP_SUBDOMAIN', 'json');
$sendloop->run('List.GetList',array());
print_r($sendloop->Result);