'default', 'region' => 'us-east-1', 'version' => '2010-03-31' ]); $phone = '+1XXX5550100'; try { $result = $SnSclient->checkIfPhoneNumberIsOptedOut([ 'phoneNumber' => $phone, ]); var_dump($result); } catch (AwsException $e) { // output error message if fails error_log($e->getMessage()); } // snippet-end:[sns.php.check_opt_out.main] // snippet-end:[sns.php.check_opt_out.complete]