Get IP Client

With PHP
<?php
    $ip = $_SERVER['REMOTE_ADDR'];
    echo "Received request from IP: $ip";
?>

With ASP
<%
    strIP = Request.ServerVariables("REMOTE_ADDR")
    Response.Write "Your IP is " & strIP
%?

With JSP
<%
    strIP = request.getRemoteAddr();
    out.print("Your IP is " + strIP);
%?