I am just starting HTML so the mistake I am currently making is probably something really obvious. I found this code that should display the user's IP address on the page, but it doesn't work. Why is this?
<html>
<head>
<title>Palpable Coral</title>
</head>
<body>
Your IP address is: <? echo $_SERVER["REMOTE_ADDR"]; ?>
</body>
</html>