VinceG/php-first-data-api — pull request #7 by aubreypwd (2014-07-22 19:21:44+00:00)
Title: Ability to set the customer_ref (Customer Reference Number)

This allows us to pass a customer reference number to the transaction log (https://copy.com/bZdE3V8PJecqTasH). Was able to set `time()` using new `->setCustomerReferenceNumber( time() )`