<?php if (!empty($_GET["username"])) { $conn = mysql_connect("localhost", "root", "N00b0r1337") or die(mysql_error()); $db = mysql_select_db("project") or die(mysql_error); $usr = $_GET["username"]; $sqlQuery = "INSERT INTO users (usr) VALUES ('".$usr."')"; $sqlResult = mysql_query($sqlQuery, $conn) or die(mysql_error()); echo '{"requestValid":"true"}'; //Must work to reach here or else there will be no answer... hopefully } else { echo '{"requestValid":"false"}'; } ?>