First, require the package using Composer:
composer require merkeleon/processing-integration
use Merkeleon\Processing\API;
use Merkeleon\Processing\Address;
$api = API::make('URL', 'API_KEY', 'API_SECRET');
/** @var Address $address */
$address = $api->addressTake('BTC', 'identity');use Merkeleon\Processing\API;
use Merkeleon\Processing\Address;
$api = API::make('URL', 'API_KEY', 'API_SECRET');
/** @var Address $address */
$address = $api->withdraw('12c6DSiU4Rq3P4ZxziKxzrL5LmMBrzjrJX', 1, 'BTC', 'unique-identity-for-withdrawal', null);Never use the timestamp as $foreignId for withdrawals, but use your unique identifier. If you mistakenly make two requests for output with the same $foreignId, then second and next attempts will be rejected for security reasons. Foreign id for address may be not unique