Online Ip Shower Not Working

[Guest]

HI Dear friends i tried online ip shower in my in my index page ...but nt working..i added thius on main page in free hosting this is working print "$REMOTE_ADDR
please help me how make it working in my server ?

[stretch]

<?
$user = explode (&#39;/&#39;, $HTTP_USER_AGENT); 
$ip=("$REMOTE_ADDR");
echo "[size="1"]Browser: $user[0] IP: $ip[/size]
";
?>

[sadhu]

$REMOTE_ADDR is obsolete

use $_SERVER[REMOTE_ADDR]