call of get payment status API FawryPay? - php

Question

I'm trying to set an get payment status API with a payment processor. Below is the code they provided me. There are some information in the $result variable that I want, what I don't understand is what type of variable is '$result' and how can I take certain data from it. printing the $result shows "Transaction ID is : xxxx status is ACCEPTED". What I basically want is to take only the transaction ID and store it in a variable.
function payFawry($ID)
{
$ticket = get_row("select * FROM `tickets` WHERE ID = '$ID' and canceled = 0");
$user = get_row("select * from users where ID = '$ticket[clientID]'");
$amount = $ticket[cost].".00";
$customerMobile = substr($user[phone],-11);
$description = "Ticket ".$ticket[ID];
$merchantCode = "CsdsadasdasdasdasdasdaJasdasd";
$merchantRefNum = $ticket[ID];
$customerProfileId = $ticket[clientID];
$paymentMethod = "PAYATFAWRY";
$cardToken = "";
$customerEmail = substr($user[email]);
$secureKey = "sadasdsadafdsfasfasdasdasdasd";
$signature = $merchantCode.$merchantRefNum.$customerProfileId.$paymentMethod.$amount.$cardToken.$secureKey;
$signature = hash('sha256', $signature);
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://atfawry.com/ECommerceWeb/Fawry/payments/charge',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "{ \"merchantCode\":\"$merchantCode\", \"merchantRefNum\":\"$merchantRefNum\", \"customerProfileId\":\"$customerProfileId\", \"customerMobile\":\"$customerMobile\", \"customerEmail\":\"$customerEmail\", \"paymentMethod\":\"$paymentMethod\", \"cardToken\":\"$cardToken\", \"amount\":$amount, \"currencyCode\":\"EGP\", \"description\":\"$description\", \"paymentExpiry\":".strtotime('+3 hour')."077, \"chargeItems\":[ { \"itemId\":\"897fa8e81be26df25db592e81c31c\", \"description\":\"asdasd\", \"price\":$amount, \"quantity\":1 } ], \"signature\":\"$signature\" }",
CURLOPT_HTTPHEADER => array(
"Content-Type: application/json",
"cache-control: no-cache"
),
));
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
$status = 1;
$response = json_decode ( $response , true ) ;
$referenceNumber = '<div style="font-size: 18px;line-height: 30px;margin-bottom: 9px;">Please proceed to any Fawry Retail (Kiosk, Supermarket) <br>Ask for Fawry Pay Service and enter you Reference Number: </div><div class="head-span" >'.$response[referenceNumber].'</div>';
$message = "برجاء استخدام رقم السداد $response[referenceNumber] لكود الخدمة 788 لدى فوري لتأكيد الحجز قم $ticket[ID]";
$new_password = encode_password($new_password) ;
send_sms($customerMobile ,$message);
$r = array("Status"=>$status,"Result"=>$referenceNumber,"referenceNumber"=>$response[referenceNumber],"Errors"=>"","NextStep"=>$NextStep);
return $r;
}
Returns 1 on success or 0 for non success
https://developer.fawrystaging.com/docs/server-apis/payment-notifications/get-payment-status-v2