Update Subscriber - Example of the code (PHP)

try
{
     // create a new cURL resource
     $ch = curl_init();

     $EngineMailerApiPath = "https://api.enginemailer.com/restapi/subscriber/emsubscriber/updateSubscriber";
     // Add APIKey into the Headers to be passed in.
     $apiKey = "API Key Here";
     $headers =["APIKey:".$apiKey];

     // Custom Fields declarations
     $jsonCustomFields1->customfield_key = "customfield_key"; 
     $jsonCustomFields1->customfield_value = "customfield_value";

     $jsonCustomFields2->customfield_key = "customfield_key"; 
     $jsonCustomFields2->customfield_value = "customfield_value";

     // Create the JSON Object with the Email, Subcategories, and Custom Fields
     // Email
     $jsonObject->email = "Email To Update";
     // Add the ID of the Subcategories into an Array to assign this Subscribers into the Subcategories
     $jsonObject->subcategories = array();
     // Custom Fields
     $jsonObject->customfields = array($jsonCustomFields1, $jsonCustomFields2);
     // Encode the Json Object into a String
     $jsonEncoded = json_encode($jsonObject);


     $options = array(CURLOPT_URL => $EngineMailerApiPath ,
     CURLOPT_RETURNTRANSFER => true,
     CURLOPT_ENCODING => '',
     CURLOPT_MAXREDIRS => 10,
     CURLOPT_TIMEOUT => 0,
     CURLOPT_FOLLOWLOCATION => true,
     CURLOPT_CUSTOMREQUEST => 'POST',
     CURLOPT_HTTPHEADER => $headers,
     CURLOPT_POSTFIELDS => $jsonEncoded
     );
     curl_setopt_array($ch, $options);
     // Calls the Rest API
     $respone = curl_exec($ch);

     // close cURL resource, and free up system resources
     curl_close($ch);

     echo $respone;
}
catch (Exception $e)
{
     echo 'Caught exception: ', $e->getMessage(), "\n";
}