In this PHP example, calling the GetHashSignature function will return the proper hash signature value to connect to the API and submit the request. The Hash Signature in this example is being saved to the $hash_signature variable.

// Define the API Variables and Parameters
$apiuser = "efQvdjyar";
$apipass = "IvQ01brhg";
$apikey = "lvPaGd3DXhP17uCF5br8cv0Rt";
$timestamp = gmdate('Y-m-d') . "T" . gmdate('H:i:s') . "Z";

// Call the Function to get the Hash Signature
$hash_signature = GetHashSignature($apiuser,$apipass, $apikey, $timestamp)

// Here is the Function
function GetHashSignature($apiuser,$apipass, $apikey, $timestamp) {
	$hash_hmac_data = $apiuser . $apipass . $timestamp;
	$hash_sha1_value = hash_hmac('sha1', $hash_hmac_data, $apikey, true);
	$hash_signature_value = base64_encode($hash_sha1_value);
	return $hash_signature_value;
}