I am adding a PHP script to my website, i followed the instructions to a T, and am getting this errormessage


Notice: Use of undefined constant REMOTE_ADDR - assumed 'REMOTE_ADDR' in D:\mentalityrecords.com\killmusick2\arti sts\chmod 777\rate.php on line 13


here is the line 13:
$ip = getenv(REMOTE_ADDR);


how can i fix this problem does anybody know?