Yes, the result is a normal FilemakerResult, so just use:
$rec =& $fm->newAddCommand('employee');
$rec->setField('name', 'Jack');
$result = $rec->execute();
$rec_id = $result->getLastRecord()->getRecordID();
$created_name = $result->getLastRecord()->getField('name',0); # or any other field, also autofill