$HeadersIn = array(
                      array('Name' => 'Subject',  'Value' => 'This is a SendMessage test subject'),
                      array('Name' => 'From',   'Value' => 'ApiClient@mydomain.com') );
                    $recipients = array($lmapi->email, 'testsend2@todomain.com', 'Thomas-Aquinas@todomain.com');
                    $memberids = array();
                    $sendmessage = array ( 'HeadersIn' => $HeadersIn,
                             'ListName' => 'testapi',
                             'Body' => 'This is a body of a message',
                             'RecipientEmailsIn' => $recipients,
                             'RecipientMemberIDsIn' => $memberids );
                    $result = $lmapi->SendMessage($sendmessage);
                  {print "Send message ID = $result \n\n";}