charset = 'utf8'; // utf8, euckr default value is utf8 // $options->srk = ''; // Solution key // $options->mode = 'test'; // If 'test' value. refund cash to point // $options->delay = 10; // '0~20' delay messages // $options->force_sms = true; // 'true or false' always send sms // $options->app_version = ''; // App version $result = $rest->createGroup($options); print_r($result); } catch(CoolsmsException $e) { echo $e->getMessage(); // get error message echo $e->getCode(); // get error code }