<?php
	$post = $_POST;
	$merchant_key 	= '------';
	$merchant_salt	= '-----';
	$hash = base64_encode( hash_hmac('sha256', $post['merchant_oid'].$merchant_salt.$post['status'].$post['total_amount'], $merchant_key, true) );

    
        $dr = $post['status'];


if($dr == 'success'){

 echo "OK";

	
}
?>