curlopt_postfields php example
<?php
$postRequest = array(
'firstFieldData' => 'foo',
'secondFieldData' => 'bar'
);
$cURLConnection = curl_init('http://hostname.tld/api');
curl_setopt($cURLConnection, CURLOPT_POSTFIELDS, $postRequest);
curl_setopt($cURLConnection, CURLOPT_RETURNTRANSFER, true);
$apiResponse = curl_exec($cURLConnection);
curl_close($cURLConnection);
// $apiResponse - available data from the API request
$jsonArrayResponse - json_decode($apiResponse);