PHP Example for Subscriber List

Something like..

<?php
//db connect variables
$host = "mysql server address";
$user = "mysql username";
$pw = "mysql password";
$db = "mysql database name";

//connect to db
$con = mysql_connect($host,$user,$pw);
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
mysql_select_db($db, $con);

//get variables from script
$uuid = $_REQUEST['UUID'];
$cm = $_REQUEST['command'];

//process variables
switch($cm) {
  case "add":
    if(!mysql_query("SELECT * FROM tbl_News WHERE uuid = '$uuid'")) {
      mysql_query("INSERT INTO tbl_News VALUES ('$uuid')");
    }
    break;
  case "rem":
    mysql_query("DELETE FROM tbl_News WHERE uuid='$uuid'");
    break;
  }

//return to script
echo $cm." complete.";
?>

This isn't tested or anything but it should be pretty close, to give an idea what your list-building functions would look like.