How to fetch attribute in JSON object/array - php

Question

I am currently using Amazon AWS SNS to send SMS to customers.
SMS works fine however I would like to simply display a success or error message when the form has been submitted depending on the outcome.
result after form submit on successful message below. I can see that statusCode with int(200) means that it was sent successfully. How can I fetch this and use it to display success or error message?
object(Aws\Result)#117(2){
[
"data": "Aws\Result": private
]=>array(2){
[
"MessageId"
]=>string(36)"f12f2261-5e13-54e8-b72e-37s26fd3c348"[
"#metadata"
]=>array(4){
[
"statusCode"
]=>int(200)[
"effectiveUri"
]=>string(35)"https://sns.eu-west-1.amazonaws.com"[
"headers"
]=>array(4){
[
"x-amzn-requestid"
]=>string(36)"716dase5-f048-5d35-8af0-sf36ce583d95"[
"content-type"
]=>string(8)"text/xml"[
"content-length"
]=>string(3)"294"[
"date"
]=>string(29)"Tue, 18 Jun 2019 19:31:28 GMT"
}[
"transferStats"
]=>array(1){
[
"http"
]=>array(1){
[
0
]=>array(0){
}
}
}
}
}[
"monitoringEvents": "Aws\Result": private
]=>array(0){
}
}
php code:
if(isset($_POST['gateeway'])){
$sender_id = $_POST['sender_id'];
$message = $_POST['message'];
$topic = 'arn:aws:sns:eu-west-1:52732446504:Testing';
try {
$result = $sns->publish([
'TargetArn' => $topic,
'Message' => $message,
'MessageAttributes' => [
'AWS.SNS.SMS.SenderID' => [
'DataType' => 'String',
'StringValue' => $sender_id,
],
'AWS.SNS.SMS.SMSType' => [
'DataType' => 'String',
'StringValue' => 'Promotional',
]
]
]);
var_dump($result);
} catch (AwsException $e) {
// output error message if fails
error_log($e->getMessage());
}
}

Answer 1

You can get the status code like this
$metaInfo = $result->get('#metadata');
if($metaInfo ['statusCode'] === 200){
echo "Message Sent";
}